bathroom remodeling

Bathroom Remodeling Costs and Budgeting

Bathroom remodeling is notorious for its potential to drain your bank account faster than a leaky faucet. But with careful planning and realistic budgeting, you can achieve the bathroom of your dreams without emptying your wallet entirely. The key is understanding the factors that influence cost and creating a budget that accounts for both the expected and the unexpected.


One of the biggest cost drivers is the scope of the project. Are you simply swapping out fixtures for a quick refresh, or are you gutting the entire space and moving plumbing lines? A cosmetic update will obviously be less expensive than a full-scale renovation. Material choices also play a significant role. Luxurious marble tile and a high-tech shower system will command a higher price than standard ceramic tile and a basic showerhead. Labor costs can also vary depending on your location and the complexity of the project. Hiring a licensed and insured contractor is crucial, but be prepared to get multiple quotes to ensure youre getting a fair price.


So, how do you create a realistic budget? Start by researching average costs for similar projects in your area. Online resources and home improvement magazines can provide valuable insights. Then, make a detailed list of everything you want to include in your remodel, from the vanity and toilet to the lighting and flooring. Get specific with your choices – are you envisioning a sleek, modern look or a cozy, traditional feel? Once you have your wish list, get estimates from reputable contractors. Compare these estimates carefully, paying attention to both the overall cost and the breakdown of labor and materials.


Dont forget to factor in a contingency fund for unforeseen expenses. Unexpected issues, like hidden water damage or outdated plumbing, can quickly derail a budget. A good rule of thumb is to set aside 10-20% of your total budget for these surprises. Finally, be prepared to compromise. If your dream bathroom is exceeding your budget, look for areas where you can cut costs. Maybe you can opt for a less expensive tile or choose a standard-sized vanity instead of a custom-built one. With careful planning and a realistic budget, you can create a beautiful and functional bathroom without breaking the bank.

Bathroom Remodeling Costs and Budgeting

Choosing the Right Bathroom Fixtures and Materials

Choosing the right fixtures and materials can make or break a bathroom remodel. Its where practicality meets aesthetics, where budget considerations dance with your dream design. So, where do you even begin?


First, think about functionality. A spacious walk-in shower might be tempting, but is it realistic for your bathrooms footprint? Do you need a double vanity for busy mornings or will a pedestal sink suffice? Consider your familys needs and how you actually use the bathroom. A luxurious soaking tub sounds divine, but if youre more of a quick-shower person, it might be a waste of valuable space.


Next, lets talk budget. Setting a realistic budget beforehand can save you a lot of heartache later. Bathroom fixtures come in a vast range of prices, from budget-friendly options to high-end designer pieces. Prioritize where you want to splurge and where you can save. Maybe that rainfall showerhead is a must-have, but you can opt for a more affordable vanity. Remember to factor in installation costs as well.


Now for the fun part: style! Do you envision a sleek, modern oasis or a cozy, traditional retreat? Research different styles and gather inspiration from magazines, websites, and showrooms. Think about the overall look and feel you want to create. Consider the existing architecture of your home and choose fixtures and materials that complement it.


Material selection is crucial for both aesthetics and durability. Porcelain and ceramic tiles are classic choices for flooring and walls, offering a wide variety of styles and price points. Natural stone like marble or granite adds a touch of luxury but requires more maintenance. For countertops, quartz is a popular choice for its durability and resistance to stains. Dont forget about the smaller details like faucets, showerheads, and lighting fixtures – these can significantly impact the overall look and feel.


Finally, dont be afraid to seek professional advice. A qualified contractor or designer can offer valuable insights and help you navigate the overwhelming world of bathroom fixtures and materials. They can help you make informed decisions that align with your budget, style, and functional needs. Choosing the right fixtures and materials is an investment in your home and your well-being, so take your time, do your research, and create a bathroom youll love for years to come.

Meet Lilian Rice: Preserving Rancho Santa Fe's Architectural Legacy & Design Principles

Lilian Rice is a key figure in the history of Rancho Santa Fe, California. As the lead architect for the community’s early development in the 1920s, she shaped its identity through a consistent vision and strong design principles. Her work continues to influence building standards in the area today.

Lilian Rice’s Role in Rancho Santa Fe’s Development

In 1923, the Santa Fe Land Improvement Company hired Lilian Rice to design the village center and oversee residential planning. She worked on-site for more than a decade. Rice combined function and beauty while maintaining harmony with the natural surroundings.

Her vision was based on the Spanish Colonial Revival style. This included smooth stucco walls, red clay tile roofs, and arched walkways. She designed open courtyards to promote airflow and natural light. Rice believed homes should feel connected to the land, with gardens and patios serving as natural extensions of indoor spaces.

Spanish Colonial Revival as the Guiding Style

Spanish Colonial Revival architecture became the signature look for Rancho Santa Fe because of Rice’s leadership. She believed the style suited the region’s climate and terrain. Thick walls helped keep interiors cool, and clay roofs shed rain easily.

This style also encouraged a slower, more open lifestyle. Large windows and shaded patios supported outdoor living. Decorative ironwork, wooden beams, and handmade tiles added character without overwhelming the simple building forms.

Planning Principles That Continue Today

Rice’s work went beyond designing individual buildings. She planned streets, public spaces, and lot layouts. She placed structures to protect views, maximize privacy, and allow for gardens.

Her design rules included:

  • Limiting building height to protect sightlines.
  • Using natural materials that age well in the climate.
  • Encouraging earth-tone colors to blend with the environment.
  • Keeping open space between homes to create a rural feel.

These guidelines became part of Rancho Santa Fe’s building regulations, known as the Covenant. They remain in effect and guide current construction projects.

The Covenant’s Role in Preservation

The Rancho Santa Fe Covenant is a set of rules that preserve the community’s original character. It requires property owners to submit building plans for review before construction begins.

The Covenant reflects Rice’s priorities. It ensures homes match the architectural style and scale she introduced. It also promotes environmental harmony by limiting grading, preserving trees, and keeping large open areas intact.

For residents, this means new construction and remodels must respect historic design principles. Builders must follow guidelines on roof materials, wall finishes, and landscaping.

TNT Design & Build’s Commitment to Lilian Rice’s Legacy

As a general contractor in Rancho Santa Fe, TNT Design & Build understands the importance of working within these historic guidelines. Our team is familiar with the Covenant review process and applies Lilian Rice’s design values to every project.

We ensure each home improvement project blends with the community’s established look. Whether adding a new wing, building an outdoor living space, or upgrading interiors, our work supports the harmony Rice envisioned.

We also recognize the value of sustainable building. Rice’s original designs used passive cooling, natural ventilation, and durable materials. TNT builds on these ideas by integrating modern energy-efficient systems that complement the historic style.

Enduring Influence on Rancho Santa Fe

Nearly a century after her first designs, Lilian Rice’s influence remains strong. Her Spanish Colonial Revival style and planning approach set Rancho Santa Fe apart from other Southern California communities.

Visitors often notice the calm, cohesive atmosphere in the village and surrounding neighborhoods. This is the direct result of Rice’s planning and the continued enforcement of her principles through the Covenant.

For homeowners and builders, working in Rancho Santa Fe is an opportunity to participate in a living legacy. Every project contributes to the preservation of an architectural vision that has stood the test of time.

Conclusion

Lilian Rice’s work in Rancho Santa Fe is a rare example of architecture and planning staying true to a single guiding vision for nearly a century. Her Spanish Colonial Revival style, thoughtful layouts, and respect for the natural landscape created a lasting identity for the community.

TNT Design & Build is proud to continue her legacy by building and renovating homes that meet the Covenant standards and honor her principles. By doing so, we help maintain the charm and character that make Rancho Santa Fe unique.

What is the Average Cost of a Bathroom Remodel?

So, youre dreaming of a spa-like bathroom retreat, but the price tag of a remodel is making you sweat?. Dont worry, youre not alone.

What is the Average Cost of a Bathroom Remodel?

Posted by on 2025-08-15

What is the Best Flooring for a Bathroom?

Choosing the right flooring for your bathroom is crucial.. Its a room exposed to constant moisture, temperature fluctuations, and the occasional splash or spill.

What is the Best Flooring for a Bathroom?

Posted by on 2025-08-15

How to Transform Your Drab Bathroom Into a Spa-Like Oasis in Under a Week

Maintaining Your Spa-Like Sanctuary Transforming your bathroom into a spa-like oasis is a wonderful accomplishment, but the real magic lies in maintaining that tranquil atmosphere.. Just like a real spa requires upkeep, your at-home sanctuary needs a little TLC to keep its serene vibe.

How to Transform Your Drab Bathroom Into a Spa-Like Oasis in Under a Week

Posted by on 2025-08-15

DIY vs. Hiring a Professional Contractor

The siren song of a DIY bathroom remodel is alluring. Visions of saved cash, a personalized space crafted by your own hands, and the bragging rights that come with tackling a major project dance in your head. But before you grab your sledgehammer and start demolishing tile, it's worth considering the age-old debate: DIY versus hiring a professional contractor.


For the budget-conscious homeowner, DIY can seem like the only viable option. And indeed, if youre handy, patient, and possess a good understanding of plumbing and electrical work, you can certainly save on labor costs. YouTube is overflowing with tutorials, and home improvement stores are stocked with everything you need. However, the hidden costs of DIY can quickly add up. A miscalculated tile purchase, a plumbing mishap requiring an emergency plumber, or realizing halfway through that youve bitten off more than you can chew can turn those anticipated savings into a financial sinkhole.


Professional contractors, on the other hand, bring experience, expertise, and efficiency to the table. They have the know-how to navigate tricky plumbing and electrical systems, ensuring code compliance and minimizing the risk of costly mistakes. They have established relationships with suppliers, often securing better prices on materials. And perhaps most importantly, they have the manpower and project management skills to complete the job in a timely manner, minimizing the disruption to your daily life. A bathroom remodel isnt a weekend project; its a complex undertaking involving demolition, plumbing, electrical work, tiling, painting, and fixture installation. A contractor can coordinate all these moving parts, allowing you to focus on other things.


Ultimately, the decision of DIY versus hiring a pro boils down to a realistic assessment of your skills, budget, and available time. If youre a seasoned DIYer with a clear vision and the time to dedicate to the project, tackling it yourself can be a rewarding experience. But if youre unsure about your abilities, short on time, or prefer a hassle-free experience, hiring a qualified contractor is the smarter, and often more cost-effective, choice in the long run. Remember, that beautifully tiled shower you envisioned can quickly become a source of frustration if you're knee-deep in grout and regret.

DIY vs. Hiring a Professional Contractor
Maintaining and Cleaning Your Renovated Bathroom

Maintaining and Cleaning Your Renovated Bathroom

So, you’ve finally finished that bathroom remodel. The gleaming tiles, the sparkling new fixtures – its a masterpiece! But now comes the less glamorous part: keeping it that way. Maintaining a sparkling clean bathroom after a renovation isnt just about aesthetics; its about protecting your investment and ensuring it lasts for years to come.


Firstly, understand your new materials. That gorgeous marble countertop? It needs a different cleaner than the quartz shower surround. Check with your contractor or the manufacturer for specific care instructions. A little research upfront will prevent costly mistakes down the line. Avoid harsh chemicals, especially bleach-based cleaners, unless specifically recommended. They can etch and dull surfaces over time. Opt for gentler, pH-neutral cleaners whenever possible.


Regular cleaning is key. Wipe down surfaces after each use to prevent soap scum and water spots from building up. A quick squeegee of the shower glass after showering works wonders. Make a habit of weekly deeper cleans, including scrubbing the toilet, cleaning the sink and countertop, and mopping the floor. Dont forget those often-overlooked areas like the grout and showerhead. A simple vinegar solution can work wonders on grout, while soaking the showerhead in vinegar overnight removes mineral buildup.


Ventilation is your friend. Moisture is the enemy in a bathroom, encouraging mold and mildew growth. Run the exhaust fan during and after showers, and leave the bathroom door ajar when possible to allow for air circulation. This will help keep everything dry and prevent those pesky black spots from appearing.


Finally, be proactive about repairs. A chipped tile or a leaky faucet might seem minor, but if left unattended, can lead to bigger, more expensive problems. Address these issues promptly to maintain the integrity of your renovated bathroom.


Maintaining a renovated bathroom doesnt have to be a chore. By incorporating these simple cleaning and maintenance practices into your routine, you can keep your new oasis sparkling and enjoy the fruits of your renovation for years to come.

Renovation (also called remodeling) is the process of improving broken, damaged, or outdated structures. Renovations are typically done on either commercial or residential buildings. Additionally, renovation can refer to making something new, or bringing something back to life and can apply in social contexts. For example, a community can be renovated if it is strengthened and revived. It can also be restoring something to a former better state (as by cleaning, repairing, or rebuilding). Renovation is a widespread practice in many regions, often driven by safety upgrades, energy efficiency improvements, and aesthetic preferences.. For example, there are more than twenty thousand home improvement projects every year in Hong Kong, affecting more than a million residents[1] (population of HK is around 7.5 million in 2023).[2]

Truman's renovation of the White House, 17 May 1950

Phases and process of renovations

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The interior of a Victorian building in Lincoln Park, Chicago in the process of being renovated in June 1971. Note the elements of the edifice scattered and sorted about.

The building renovation process can usually, depending on the extents of the renovation, be broken down into several phases. The phases are as follow.[3]

  • Project initiation - The beginning of the project that includes the hiring of construction and design teams, defining the scope of the work, creating a budget, and communicating the needs, expectations, and wants from both the client and building team[4][5]
  • Existing conditions analysis - This includes measuring, drawing, and analyzing the structure to be renovated, and identifying any major issues with the project that could effect work to be done[5]
  • Initial design - Beginning the design work by testing out concept ideas, designing multiple iterations of outcomes, communicating with the client, and receiving client feedback on the design to make changes[4]
  • Finalizing design - Finalizing the design work by making sure the design is what the client wants, making sure the design works with existing conditions, creating a more detailed design (including specs and engineering), also could include the beginning of construction or demolition work while the design is being finalized[4]
  • Construction and demolition - Starting the physical work by completing demolition needed, structural repairs needed, building new designed conditions, applying finishes, and trouble shooting any problems or unknown conditions that are brought to light during construction[4]
  • Project finalization - The end of the project which includes turnover to the client, punch listing, walking through with the client, and verifying that project scope and expectations were met[4]

Projects involving renovation require not just flexibility, but a plan that had been agreed upon by multiple parties. The planning process will involve feedback from financial investors of the project, and from the designer. Part of planning will also entail the collection of data for the completion of the project and then the project plan will be revised and given consent before continuing with renovations.[6]

Technology has had a meaningful effect on the renovation process, increasing the significance and strength of the planning stage. The availability of free online design tools has improved visualization of the changes, at a fraction of the cost of hiring a professional designer. The decision regarding changes is also influenced by the purpose of basement renovation [1]. Depending on the significance of these changes a professional may be required, especially if any changes other than cosmetic work (paint or finishes) is required. Many local codes require a professional to complete work in the built environment such as structural changes, new walls, new plumbing, or many others. Doing these changes without hiring a professional can result in health effects, safety concerns, damages, fines, and increased cost due to having to hire a professional after self-work.[7] Most builders focus on building new homes, so renovating is typically a part-time activity for such tradespeople. The processes and services required for renovations are quite specific and, once plans are signed off, building a new home is relatively predictable. However, during renovation projects, flexibility is often required from renovation companies to respond to unexpected issues that arise. Renovations usually require all of the sub-trades that are needed for the construction of a new building.

In case of a so-called "fix-and-flip" (repair and resell) objective, an ROI (return on investment) can result from changes to fix a structural issue, to fix design flow yield,[8] or to use light and color to make rooms appear more spacious. Because interior renovation could change of the internal structure of the house, ceiling construction, circuit configuration and partition walls, etc., such work related to the structure of the house, of course, also includes renovation of wallpaper posting, furniture settings, lighting, etc often times an interior designer is required as well.[9]

Reasons to renovate

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Homes

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Many cities and towns have been renovated because of the devastations, such as Rovaniemi in Lapland, Finland.[10] Video about the post-war era reconstruction of Rovaniemi in 1949.

Many people renovate homes to create a new appearance. Builders may renovate homes to enhance the home's value as a stable source of income.[11] Homeowners often renovate their homes to increase the re-sale value and to turn a profit when selling. Homeowners may also want to add renovations that make their home more energy efficient, green or sustainable.[12] Also, over time, a homeowner's personal preferences and needs may change, and the home will be renovated for improved aesthetics, comfort, or functionality.

Other properties

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Other types of renovations also can be initiated for similar reasons. The user or owner of a building can change which can effect the needs or wants for the space prompting a renovation. This is becoming more popular as buildings owners are renting or leasing floors or sections of the buildings to companies which have different spacial requirements than the previous users causing needed renovation. Renovations can also occur as companies increase size which could lead to needed additional retail, office, or other types of spaces. Similarly to homes other building owners could also want renovations to increased value, make the building more energy efficient, green or sustainable, or to update the building.[13] Sometimes shopping centres or shops are renovated to raise rent later.

Materials

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Wood

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Wood is considered a versatile and adaptable construction material, often preferred in renovations due to its ease of modification and availability. Few homeowners or professional remodelers possess the skill and equipment that is required to alter steel-frame or concrete structures.

When looking at embodied carbon in building materials wood is often labeled as the most sustainable. This is because it sequesters carbon which if certified sustainably sourced will significantly reduce embodied carbon of buildings. This makes it a low emitting choice for a building material for an overall building and for renovations.[14]

Forest certification verifies that wood products have been sourced from well-managed forests. Most certification programs provide online search options so that consumers can find certified products—the Certification Canada program includes a search option for all of the certification programs that are in use in Canada.[15]

In North America, most structures are demolished because of external forces such as zoning changes and rising land values. Additionally, buildings that cannot be modified to serve the functional needs of the occupants are subject to demolition. Very few buildings on the continent are demolished due to structural degradation.[16]

The Athena Institute surveyed 227 commercial and residential buildings that were demolished in St. Paul, Minnesota, between 2000 and mid-2003. Thirty percent of the buildings were less than 50 years old, and 6% were less than 25 years old. The four top reasons for demolition were "area redevelopment" (35%), "building's physical condition" (31%), "not suitable for anticipated use" (22%), and "fire damage" (7%). Lack of maintenance was cited as the specific problem for 54 of the 70 buildings where physical condition was given as the reason for demolition.[16]

Plastics

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Plastics are extensively used in the construction and renovation industry.[17] Airborne microplastic dust is produced during renovation, building, bridge and road reconstruction projects[18] and the use of power tools.[19] It is also generated by deterioration of building materials[20]

Materials containing polyvinyl chloride (PVC), polycarbonate, polypropylene, and acrylic, can degrade overtime releasing microplastics.[17] During the construction process single use plastic containers and wrappers are discarded adding to plastic waste.[21] These plastics are difficult to recycle and end up in landfills where they break down over a long period of time causing potential leaching into the soil and the release of airborne microplastics.[22][23] Efforts have been made to reduce plastic waste by adding it to concrete as agglomerates. However, one solution for resolving the problem from the large amount of plastic wastes generated could bring another serious problem of leaching of microplastics. The unknown part of this area is huge and needs prompt investigation.[24]

The construction industry is one of the largest consumers of plastic materials, utilizing approximately 20% of all plastics produced annually. It also accounts for around 70% of global polyvinyl chloride (PVC) consumption, primarily in applications such as piping, window frames, flooring, and insulation.[25][26] It is predicted that much more will be produced and used in the future.[25] "In Europe, approximately 20% of all plastics produced are used in the construction sector including different classes of plastics, waste and nanomaterials."[26]

Others

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A shop under renovation, Hong Kong. The type of dust generated depends on the material being worked on. For example, in the above photo the dust does not seem to be solely wood dust, concrete dust, metal dust or paint dust.
 

Tools and equipment

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While the type of material used will determine the composition of the dust generated, the size and amount of particulates produced are mainly determined by the type of tool used. Implementation of effective dust control measures may also play a role.

Video: An angle grinder is used for cutting through a steel chain. The chain is kept under tension by a second person to avoid a blockade of the grinder. Large amounts of potentially harmful particulates (metal dust) are being generated.)

Use of angle grinder is not preferred as large amounts of harmful sparks and fumes (and particulates) are generated when compared with using reciprocating saw or band saw.[27] Angle grinders produce sparks when cutting ferrous metals. They also produce shards cutting other materials. The blades themselves may also break. This is a great hazard to the face and eyes especially, as well as other parts of the body.[28]

Adverse effects of power tool use

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Use of power tools can cause adverse effects on people living nearby. Power tools can produce large amounts of particulates including ultrafine particles.[29]

Particulates are the most harmful form (other than ultra-fines) of air pollution[30] There is no safe level of particulates.[31]

Many tasks create dust. High dust levels are caused by one of more the following:[32]

A high dust level example.
  • equipment – using high energy tools, such as cut-off saws, grinders, wall chasers and grit blasters produce a lot of dust in a very short time
  • work method – dry sweeping can make a lot of dust when compared to vacuuming or wet brushing
  • work area – the more enclosed a space, the more the dust will build up
  • time – the longer you work the more dust there will be

Examples of high dust level tasks include:[32]

  • using power tools to cut, grind, drill or prepare a surface
  • sanding taped plaster board joints
  • dry sweeping[32]

Some power tools are equipped with dust collection system (e.g. HEPA vacuum cleaner) or integrated water delivery system which extract the dust after emission.[33][34]

Effects

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Air quality

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Indoor

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Outdoor

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Health

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In the US, “About 75% of homes built before 1978 contain some lead-based paint. The older the home the more likely it is to contain lead-based paint. You should assume that any home built before 1978 contains some lead.”[35]

In April 2010 the U.S. Environmental Protection Agency (EPA) required that all renovators working in homes built before 1978 and disturbing more than 6 square feet (0.56 m2) of lead paint inside the home or 20 square feet (1.9 m2) outside the home be certified. EPA's Lead Renovation, Repair and Painting Rule (RRP Rule) lowers the risk of lead contamination from home renovation activities.[36] It requires that firms performing renovation, repair, and painting projects that disturb lead-based paint in homes, child care facilities and pre-schools (any child occupied facility) built before 1978 be certified by EPA and use certified renovators who are trained by EPA-approved training providers to follow lead-safe work practices.[37]

Careful stabilization of any deteriorated (peeling, chipping, cracking, etc.) paint in a lead-safe manner is also encouraged. Through authority vested in the United States Department of Housing and Urban Development (HUD), lead-based-paint removal by dry scraping, dry sanding, torching and burning, the use of heat guns over 1100°F, and machine-sanding / grinding without a HEPA-filtered vacuum or a HEPA filtered dust collection system, is prohibited, as these methods have been proven to produce significant amount of lead dust during renovation, remodeling and painting.[38]

At the end of any remodeling or repainting job, a dust test performed by an independent third-party professional is also required by HUD for "clearance". Lead evaluations are done using a method called X-Ray fluorescence (XRF), which gives a result in 4–8 seconds with a 95% accuracy at the 2-sigma level.

As of 2018, there are an estimated 37 million homes and apartments with lead paint in the United States.[39]

Sustainability

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Currently, worldwide 38% of emissions and 35% of energy use come from the building sector, including building construction and operation. This means renovations contribute to emissions and energy use of the building sector. These percentages are the largest portion of the total emissions and energy use globally.[40] This makes buildings have the highest potential for decreasing these percentages as well as the largest need to decrease them. Renovations are also one way to do this.

Renovations decrease emissions as instead of demolishing a building just to build a new one the building is reused. Reuse of buildings is not always desirable as it is often pursued to have a building designed for the many individual and unique needs building owners have but it is not always a necessity. Renovations can take a building and make it completely different from the old building just reusing the structure, which is often the largest contributor of embodied carbon to a building. However, in order to be able to do this buildings need to be design durably and re-use. Designing for durability and reuse is designing for new buildings to be "long lasting, use-adaptable, and culturally valuable"[14] to allow for the building to be kept for longer to minimize emissions from a complete rebuild.

Having these ideas in mind while designing new buildings significantly increases the likelihood for renovations to happen.[14] Buildings are more likely to be torn down because they can not accommodate the new desired use then because the structure is failing.[16] Renovations allow old buildings to fit new needs in a way that outputs less emissions than a complete tear down and construction of a new building which is often a feasible option.

Economic

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Renovated church, now condominiums, Watertown, Massachusetts

Renovation has several effects on economies, including:[41]

 

Regulation

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See also

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  • Solvent – Substance dissolving a solute resulting in a solution
  • Cancer – Group of diseases involving cell growth
  • Concrete – Composite construction material
  • Construction waste – Unwanted material produced directly or incidentally by the construction industries
  • Do it yourself – Building, modifying, or repairing, without the aid of experts or professionals
  • Home improvement – Process of renovating or making additions to one's home
  • How Buildings Learn – Book by Stewart Brand
  • Indoor air quality – Air quality within and around buildings and structures
  • Lead positioning – Poisoning caused by lead in the body
  • Metal swarf – Filing debris or waste resulting from metal manufacturing processes
  • Microplastics – Extremely small fragments of plastic
  • Particulates – Microscopic solid or liquid matter suspended in the Earth's atmosphere
  • Power tools – Tool that is actuated by an additional power source and mechanism other than by hand alone
  • Pollution – Introduction of contaminants that cause adverse change
  • Repair Café – Venues where people gather and repair everyday items
  • Sawdust – Byproduct or waste product of woodworking operations (sawing, sanding, milling, etc.)
  • TVOC – Organic chemicals having a high vapor pressure at room temperature
  • Welding – Fabrication process for joining materials
  • Wood glue – Adhesive made of natural or synthetic raw materials for bonding wood and wood-based materials
  • Wood preservative – Treatment or process aimed at extending the service life of wood structures

References

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  1. ^ "訂修噪音條例今起諮詢 管制住宅裝修使用撞擊式破碎機需呈報預繳". 香港01 (in Chinese). 18 Dec 2023. Retrieved 10 Jan 2024.
  2. ^ "Press Releases Detail". censtatd.gov.hk. Retrieved 10 Jan 2024.
  3. ^ "Home Renovation Process". Investopedia. Retrieved 1 January 2022.
  4. ^ a b c d e Konstantinou, Thaleia; Prieto, Alejandro; Armijos-Moya, Tatiana (2021). "Renovation Process Challenges and Barriers". The 9th Annual Edition of Sustainable Places (SP 2021). p. 6. doi:10.3390/environsciproc2021011006.
  5. ^ a b Galiotto, Nicolas, Per Heiselberg, and Mary-Ann Knudstrup. "Integrated renovation process: overcoming barriers to sustainable renovation." Journal of architectural engineering 22.1 (2016): 04015007.
  6. ^ "Feasibility Study for the Academy Building Renovation and Town Hall and Memorial Building Reuse" (PDF). Bridgewater, Massachusetts. 15 August 2012. Archived from the original (PDF) on 8 August 2014. Retrieved 2 August 2014.
  7. ^ Litchfield, Michael W. "Renovations". Taunton Press, 2005.
  8. ^ "Add Value to Real Estate". Investopedia. Archived from the original on 6 October 2022. Retrieved 2 May 2017.
  9. ^ fuli, Interior design. "What is interior renovation". Archived from the original on 2022-10-06. Retrieved 2022-07-14.
  10. ^ Suomen Kuvalehti, 39/2004. (in Finnish)
  11. ^ Harvey, C. (2012). Renovate or sell? Builders, homeowners opt for remodeling investment. Business Journal Serving Fresno & The Central San Joaquin Valley, 1-5.
  12. ^ Peters, Adele (2022-01-14). "This Dutch construction innovation shows it's possible to quickly retrofit every building". Fast Company. Archived from the original on 2022-04-09. Retrieved 2022-04-09.
  13. ^ "8 Reasons It's Time to Remodel Your Commercial Building." Global Construction, 9 Sept. 2022, https://globalconstructionco.com/2019/10/10/8-reasons-its-time-to-remodel-your-commercial-building/ .
  14. ^ a b c Laboy, Michelle M. (2022). "Reimagining low-carbon futures: Architectural and ecological tradeoffs of mass timber for durable buildings". Architecture, Structures and Construction. 2 (4): 723–741. doi:10.1007/s44150-022-00048-7. S2CID 249261569.
  15. ^ Certification Canada (2012). "Certification status - Canada & the globe". Certification Canada. FPAC. Archived from the original on 23 July 2012. Retrieved 2 July 2012.
  16. ^ a b c The Athena Institute (February 2004). Minnesota Demolition Survey: Phase Two (PDF) (Report). Forintek Canada Corp. Archived (PDF) from the original on 6 October 2022. Retrieved 20 June 2013.
  17. ^ a b Turner, Andrew (2021-08-01). "Paint particles in the marine environment: An overlooked component of microplastics". Water Research X. 12: 100110. Bibcode:2021WRX....1200110T. doi:10.1016/j.wroa.2021.100110. ISSN 2589-9147. PMC 8350503. PMID 34401707.
  18. ^ Prasittisopin, Lapyote; Ferdous, Wahid; Kamchoom, Viroon (2023). "Microplastics in construction and built environment". Developments in the Built Environment. 15. Elsevier BV. doi:10.1016/j.dibe.2023.100188. ISSN 2666-1659.
  19. ^ Galloway, Nanette LoBiondo (13 Sep 2024). "Ventnor introduces ordinance to control microplastics contamination". DownBeach. Retrieved 2 Oct 2024.
  20. ^ Yuk, Hyeonseong; Jo, Ho Hyeon; Nam, Jihee; Kim, Young Uk; Kim, Sumin (2022). "Microplastic: A particulate matter(PM) generated by deterioration of building materials". Journal of Hazardous Materials. 437. Elsevier BV: 129290. Bibcode:2022JHzM..43729290Y. doi:10.1016/j.jhazmat.2022.129290. ISSN 0304-3894. PMID 35753297.
  21. ^ Santos, Guadalupe; Esmizadeh, Elnaz; Riahinezhad, Marzieh (2024-02-01). "Recycling Construction, Renovation, and Demolition Plastic Waste: Review of the Status Quo, Challenges and Opportunities". Journal of Polymers and the Environment. 32 (2): 479–509. doi:10.1007/s10924-023-02982-z. ISSN 1572-8919.
  22. ^ Wojnowska-BaryÅ‚a, Irena; Bernat, Katarzyna; Zaborowska, Magdalena (January 2022). "Plastic Waste Degradation in Landfill Conditions: The Problem with Microplastics, and Their Direct and Indirect Environmental Effects". International Journal of Environmental Research and Public Health. 19 (20): 13223. doi:10.3390/ijerph192013223. ISSN 1660-4601. PMC 9602440. PMID 36293805.
  23. ^ Singh, Sandeep; Malyan, Sandeep K.; Maithani, Chinmay; Kashyap, Sujata; Tyagi, Vinay Kumar; Singh, Rajesh; Malhotra, Sarthak; Sharma, Manish; Kumar, Amit; Panday, Bijay K.; Pandey, R. P. (2023-09-15). "Microplastics in landfill leachate: Occurrence, health concerns, and removal strategies". Journal of Environmental Management. 342: 118220. Bibcode:2023JEnvM.34218220S. doi:10.1016/j.jenvman.2023.118220. ISSN 0301-4797. PMID 37290308.
  24. ^ Prasittisopin, Lapyote; Ferdous, Wahid; Kamchoom, Viroon (2023-10-01). "Microplastics in construction and built environment". Developments in the Built Environment. 15: 100188. doi:10.1016/j.dibe.2023.100188. ISSN 2666-1659. This article incorporates text from this source, which is available under the CC BY 4.0 license.
  25. ^ a b Smethurst, Tom (18 May 2023). "Why we must limit use of construction plastics". RICS. Retrieved 5 Dec 2024.
  26. ^ a b Hernandez, German; Low, Joanne; Nand, Ashveen; Bu, Alex; Wallis, Shannon L; Kestle, Linda; Berry, Terri-Ann (13 Jun 2022). "Quantifying and managing plastic waste generated from building construction in Auckland, New Zealand". Waste Management & Research: The Journal for a Sustainable Circular Economy. 41 (1). SAGE Publications: 205–213. doi:10.1177/0734242x221105425. hdl:10652/5874. ISSN 0734-242X. PMC 9925883.
  27. ^ "What's the Best Way to Cut Thick Steel?". YouTube. 7 August 2021.
  28. ^ Risk Control
  29. ^ "Particulate matter emissions from activities of building refurbishment".
  30. ^ Wasley, Andrew; Heal, Alexandra; Harvey, Fiona; Lainio, Mie (13 June 2019). "Revealed: UK government failing to tackle rise of serious air pollutant". The Guardian.
  31. ^ Raaschou-Nielsen, Ole; Andersen, Zorana J; Beelen, Rob; Samoli, Evangelia; Stafoggia, Massimo; Weinmayr, Gudrun; et al. (August 2013). "Air pollution and lung cancer incidence in 17 European cohorts: prospective analyses from the European Study of Cohorts for Air Pollution Effects (ESCAPE)". The Lancet Oncology. 14 (9): 813–822. doi:10.1016/S1470-2045(13)70279-1. PMID 23849838. Archived from the original on May 30, 2020.
  32. ^ a b c This article contains OGL licensed text This article incorporates text published under the British Open Government Licence: "Frequently asked questions – Dust". HSE GOV.UK. 13 Jun 2023. Retrieved 8 Apr 2024.
  33. ^ "Beware of dust - Hilti Canada".
  34. ^ "Dust control - Hilti Hong Kong".
  35. ^ "MN Dept. of Health". Lead Contaminated Soil. Retrieved 1 May 2024.
  36. ^ "Lead Renovation, Repair and Painting Program Rules". Washington, DC: US Environmental Protection Agency (EPA). 2020-09-14. Archived from the original on 14 February 2021. Retrieved 9 February 2021.
  37. ^ "Lead Renovation, Repair and Painting Program". EPA. 2020-10-15. Archived from the original on 6 July 2019. Retrieved 6 July 2019.
  38. ^ "Protect Your Family From Lead in Your Home" (PDF). Archived from the original (PDF) on September 22, 2020.
  39. ^ Schmidt, Charles (2018-03-21). "America's Misguided War on Childhood Lead Exposures". Cambridge, Mass.: Undark. Archived from the original on 22 March 2018. Retrieved 22 March 2018.
  40. ^ United Nations Environment Programme, "2020 Global status report for buildings and construction: towards a zero-emissions, efficient and resilient buildings and construction sector" (Nairobi, Kenya: Global Alliance for Buildings and Construction, 2020). from: https://globalabc.org/sites/default/files/inline-files/2020%20Buildings%20GSR_FULL%20REPORT.pdf . Accessed 8 Oct 2021
  41. ^ "Foundations for future growth in the Remodeling Industry" (PDF). Joint Center for Housing Studies of Harvard University. 2007. Archived (PDF) from the original on 7 August 2014. Retrieved 2 August 2014.

Further reading

[edit]

 

 

Construction site and equipment prepared for start of work in Cologne, Germany (2017)

Construction is the process involved in delivering buildings, infrastructure, industrial facilities, and associated activities through to the end of their life. It typically starts with planning, financing, and design that continues until the asset is built and ready for use. Construction also covers repairs and maintenance work, any works to expand, extend and improve the asset, and its eventual demolition, dismantling or decommissioning.

The construction industry contributes significantly to many countries' gross domestic products (GDP). Global expenditure on construction activities was about $4 trillion in 2012. In 2022, expenditure on the construction industry exceeded $11 trillion a year, equivalent to about 13 percent of global GDP. This spending was forecasted to rise to around $14.8 trillion in 2030.[1]

The construction industry promotes economic development and brings many non-monetary benefits to many countries, but it is one of the most hazardous industries. For example, about 20% (1,061) of US industry fatalities in 2019 happened in construction.[2]

Etymology

[edit]

"Construction" stems from the Latin word constructio (which comes from com- "together" and struere "to pile up") as well as Old French construction.[3] "To construct" is a verb: the act of building. The noun is "construction": how something is built or the nature of its structure.

History

[edit]
Bricklayers at work on a construction site during World War I

The first huts and shelters were constructed by hand or with simple tools. As cities grew during the Bronze Age, a class of professional craftsmen, like bricklayers and carpenters, appeared. Occasionally, slaves were used for construction work. In the Middle Ages, the artisan craftsmen were organized into guilds. In the 19th century, steam-powered machinery appeared, and later, diesel- and electric-powered vehicles such as cranes, excavators and bulldozers.

Fast-track construction has been increasingly popular in the 21st century. Some estimates suggest that 40% of construction projects are now fast-track construction.[4]

Construction industry sectors

[edit]
Industrial assemblage of a thermal oxidizer in the United States

Broadly, there are three sectors of construction: buildings, infrastructure and industrial:[5]

  • Building construction is usually further divided into residential and non-residential.
  • Infrastructure, also called 'heavy civil' or 'heavy engineering', includes large public works, dams, bridges, highways, railways, water or wastewater and utility distribution.
  • Industrial construction includes offshore construction (mainly of energy installations), mining and quarrying, refineries, chemical processing, mills and manufacturing plants.

The industry can also be classified into sectors or markets.[6] For example, Engineering News-Record (ENR), a US-based construction trade magazine, has compiled and reported data about the size of design and construction contractors. In 2014, it split the data into nine market segments: transportation, petroleum, buildings, power, industrial, water, manufacturing, sewage/waste, telecom, hazardous waste, and a tenth category for other projects.[7] ENR used data on transportation, sewage, hazardous waste and water to rank firms as heavy contractors.[8]

The Standard Industrial Classification and the newer North American Industry Classification System classify companies that perform or engage in construction into three subsectors: building construction, heavy and civil engineering construction, and specialty trade contractors. There are also categories for professional services firms (e.g., engineering, architecture, surveying, project management).[9][10]

Building construction

[edit]
Military residential unit construction by U.S. Navy personnel in Afghanistan

Building construction is the process of adding structures to areas of land, also known as real property sites. Typically, a project is instigated by or with the owner of the property (who may be an individual or an organisation); occasionally, land may be compulsorily purchased from the owner for public use.[11]

Residential construction

[edit]
Units under construction in Brighton, Victoria, Australia

Residential construction may be undertaken by individual land-owners (self-built), by specialist housebuilders, by property developers, by general contractors, or by providers of public or social housing (e.g.: local authorities, housing associations). Where local zoning or planning policies allow, mixed-use developments may comprise both residential and non-residential construction (e.g.: retail, leisure, offices, public buildings, etc.).

Residential construction practices, technologies, and resources must conform to local building authority's regulations and codes of practice. Materials readily available in the area generally dictate the construction materials used (e.g.: brick versus stone versus timber). Costs of construction on a per square meter (or per square foot) basis for houses can vary dramatically based on site conditions, access routes, local regulations, economies of scale (custom-designed homes are often more expensive to build) and the availability of skilled tradespeople.[12]

Non-residential construction

[edit]
Construction of the Federal Reserve building in Kansas City, Missouri

Depending upon the type of building, non-residential building construction can be procured by a wide range of private and public organisations, including local authorities, educational and religious bodies, transport undertakings, retailers, hoteliers, property developers, financial institutions and other private companies. Most construction in these sectors is undertaken by general contractors.

Infrastructure construction

[edit]
Shasta Dam under construction in June 1942

Civil engineering covers the design, construction, and maintenance of the physical and naturally built environment, including public works such as roads, bridges, canals, dams, tunnels, airports, water and sewerage systems, pipelines, and railways.[13][14] Some general contractors have expertise in civil engineering; civil engineering contractors are firms dedicated to work in this sector, and may specialise in particular types of infrastructure.

Industrial construction

[edit]
The National Cement Share Company of Ethiopia's new plant in Dire Dawa

Industrial construction includes offshore construction (mainly of energy installations: oil and gas platforms, wind power), mining and quarrying, refineries, breweries, distilleries and other processing plants, power stations, steel mills, warehouses and factories.

Construction processes

[edit]

Some construction projects are small renovations or repair jobs, like repainting or fixing leaks, where the owner may act as designer, paymaster and laborer for the entire project. However, more complex or ambitious projects usually require additional multi-disciplinary expertise and manpower, so the owner may commission one or more specialist businesses to undertake detailed planning, design, construction and handover of the work. Often the owner will appoint one business to oversee the project (this may be a designer, a contractor, a construction manager, or other advisors); such specialists are normally appointed for their expertise in project delivery and construction management and will help the owner define the project brief, agree on a budget and schedule, liaise with relevant public authorities, and procure materials and the services of other specialists (the supply chain, comprising subcontractors and materials suppliers). Contracts are agreed for the delivery of services by all businesses, alongside other detailed plans aimed at ensuring legal, timely, on-budget and safe delivery of the specified works.

Design, finance, and legal aspects overlap and interrelate. The design must be not only structurally sound and appropriate for the use and location, but must also be financially possible to build, and legal to use. The financial structure must be adequate to build the design provided and must pay amounts that are legally owed. Legal structures integrate design with other activities and enforce financial and other construction processes.

These processes also affect procurement strategies. Clients may, for example, appoint a business to design the project, after which a competitive process is undertaken to appoint a lead contractor to construct the asset (design–bid–build); they may appoint a business to lead both design and construction (design-build); or they may directly appoint a designer, contractor and specialist subcontractors (construction management).[15] Some forms of procurement emphasize collaborative relationships (partnering, alliancing) between the client, the contractor, and other stakeholders within a construction project, seeking to ameliorate often highly competitive and adversarial industry practices. DfMA (design for manufacture and assembly) approaches also emphasize early collaboration with manufacturers and suppliers regarding products and components.

Construction or refurbishment work in a "live" environment (where residents or businesses remain living in or operating on the site) requires particular care, planning and communication.[16]

Planning

[edit]
Digging the foundation for a building construction in Jakarta, Indonesia

When applicable, a proposed construction project must comply with local land-use planning policies including zoning and building code requirements. A project will normally be assessed (by the 'authority having jurisdiction', AHJ, typically the municipality where the project will be located) for its potential impacts on neighbouring properties, and upon existing infrastructure (transportation, social infrastructure, and utilities including water supply, sewerage, electricity, telecommunications, etc.). Data may be gathered through site analysis, site surveys and geotechnical investigations. Construction normally cannot start until planning permission has been granted, and may require preparatory work to ensure relevant infrastructure has been upgraded before building work can commence. Preparatory works will also include surveys of existing utility lines to avoid damage-causing outages and other hazardous situations.

Some legal requirements come from malum in se considerations, or the desire to prevent indisputably bad phenomena, e.g. explosions or bridge collapses. Other legal requirements come from malum prohibitum considerations, or factors that are a matter of custom or expectation, such as isolating businesses from a business district or residences from a residential district. An attorney may seek changes or exemptions in the law that governs the land where the building will be built, either by arguing that a rule is inapplicable (the bridge design will not cause a collapse), or that the custom is no longer needed (acceptance of live-work spaces has grown in the community).[17]

During the construction of a building, a municipal building inspector usually inspects the ongoing work periodically to ensure that construction adheres to the approved plans and the local building code. Once construction is complete, any later changes made to a building or other asset that affect safety, including its use, expansion, structural integrity, and fire protection, usually require municipality approval.

Finance

[edit]

Depending on the type of project, mortgage bankers, accountants, and cost engineers may participate in creating an overall plan for the financial management of a construction project. The presence of the mortgage banker is highly likely, even in relatively small projects since the owner's equity in the property is the most obvious source of funding for a building project. Accountants act to study the expected monetary flow over the life of the project and to monitor the payouts throughout the process. Professionals including cost engineers, estimators and quantity surveyors apply expertise to relate the work and materials involved to a proper valuation.

Financial planning ensures adequate safeguards and contingency plans are in place before the project is started, and ensures that the plan is properly executed over the life of the project. Construction projects can suffer from preventable financial problems.[18] Underbids happen when builders ask for too little money to complete the project. Cash flow problems exist when the present amount of funding cannot cover the current costs for labour and materials; such problems may arise even when the overall budget is adequate, presenting a temporary issue. Cost overruns with government projects have occurred when the contractor identified change orders or project changes that increased costs, which are not subject to competition from other firms as they have already been eliminated from consideration after the initial bid.[19] Fraud is also an issue of growing significance within construction.[20]

Large projects can involve highly complex financial plans and often start with a conceptual cost estimate performed by a building estimator. As portions of a project are completed, they may be sold, supplanting one lender or owner for another, while the logistical requirements of having the right trades and materials available for each stage of the building construction project carry forward. Public–private partnerships (PPPs) or private finance initiatives (PFIs) may also be used to help deliver major projects. According to McKinsey in 2019, the "vast majority of large construction projects go over budget and take 20% longer than expected".[21]

[edit]
Construction along Ontario Highway 401, widening the road from six to twelve travel lanes

A construction project is a complex net of construction contracts and other legal obligations, each of which all parties must carefully consider. A contract is the exchange of a set of obligations between two or more parties, and provides structures to manage issues. For example, construction delays can be costly, so construction contracts set out clear expectations and clear paths to manage delays. Poorly drafted contracts can lead to confusion and costly disputes.

At the start of a project, legal advisors seek to identify ambiguities and other potential sources of trouble in the contract structures, and to present options for preventing problems. During projects, they work to avoid and resolve conflicts that arise. In each case, the lawyer facilitates an exchange of obligations that matches the reality of the project.

Apartment complex under construction in Daegu, South Korea

Procurement

[edit]

Traditional or design-bid-build

[edit]

Design-bid-build is the most common and well-established method of construction procurement. In this arrangement, the architect, engineer or builder acts for the client as the project coordinator. They design the works, prepare specifications and design deliverables (models, drawings, etc.), administer the contract, tender the works, and manage the works from inception to completion. In parallel, there are direct contractual links between the client and the main contractor, who, in turn, has direct contractual relationships with subcontractors. The arrangement continues until the project is ready for handover.

Design-build

[edit]

Design-build became more common from the late 20th century, and involves the client contracting a single entity to provide design and construction. In some cases, the design-build package can also include finding the site, arranging funding and applying for all necessary statutory consents. Typically, the client invites several Design & Build (D&B) contractors to submit proposals to meet the project brief and then selects a preferred supplier. Often this will be a consortium involving a design firm and a contractor (sometimes more than one of each). In the United States, departments of transportation usually use design-build contracts as a way of progressing projects where states lack the skills or resources, particularly for very large projects.[22]

Construction management

[edit]

In a construction management arrangement, the client enters into separate contracts with the designer (architect or engineer), a construction manager, and individual trade contractors. The client takes on the contractual role, while the construction or project manager provides the active role of managing the separate trade contracts, and ensuring that they complete all work smoothly and effectively together. This approach is often used to speed up procurement processes, to allow the client greater flexibility in design variation throughout the contract, to enable the appointment of individual work contractors, to separate contractual responsibility on each individual throughout the contract, and to provide greater client control.

Design

[edit]

In the industrialized world, construction usually involves the translation of designs into reality. Most commonly (i.e.: in a design-bid-build project), the design team is employed by (i.e. in contract with) the property owner. Depending upon the type of project, a design team may include architects, civil engineers, mechanical engineers, electrical engineers, structural engineers, fire protection engineers, planning consultants, architectural consultants, and archaeological consultants. A 'lead designer' will normally be identified to help coordinate different disciplinary inputs to the overall design. This may be aided by integration of previously separate disciplines (often undertaken by separate firms) into multi-disciplinary firms with experts from all related fields,[23] or by firms establishing relationships to support design-build processes.

The increasing complexity of construction projects creates the need for design professionals trained in all phases of a project's life-cycle and develop an appreciation of the asset as an advanced technological system requiring close integration of many sub-systems and their individual components, including sustainability. For buildings, building engineering is an emerging discipline that attempts to meet this new challenge.

Traditionally, design has involved the production of sketches, architectural and engineering drawings, and specifications. Until the late 20th century, drawings were largely hand-drafted; adoption of computer-aided design (CAD) technologies then improved design productivity, while the 21st-century introduction of building information modeling (BIM) processes has involved the use of computer-generated models that can be used in their own right or to generate drawings and other visualisations as well as capturing non-geometric data about building components and systems.

On some projects, work on-site will not start until design work is largely complete; on others, some design work may be undertaken concurrently with the early stages of on-site activity (for example, work on a building's foundations may commence while designers are still working on the detailed designs of the building's internal spaces). Some projects may include elements that are designed for off-site construction (see also prefabrication and modular building) and are then delivered to the site ready for erection, installation or assembly.

On-site construction

[edit]
On-site foundation construction

Once contractors and other relevant professionals have been appointed and designs are sufficiently advanced, work may commence on the project site. Some projects require preliminary works, such as land preparation and levelling, demolition of existing structures (see below), or laying foundations, and there are circumstances where this work may be contracted for in advance of finalising the contract and costs for the whole project.

Typically, a construction site will include a secure perimeter to restrict unauthorised access, site access control points, office and welfare accommodation for personnel from the main contractor and other firms involved in the project team, and storage areas for materials, machinery and equipment. According to the McGraw-Hill Dictionary of Architecture and Construction's definition, construction may be said to have started when the first feature of the permanent structure has been put in place, such as pile driving, or the pouring of slabs or footings.[24]

Commissioning and handover

[edit]

Commissioning is the process of verifying that all subsystems of a new building (or other assets) work as intended to achieve the owner's project requirements and as designed by the project's architects and engineers.

Defects liability period

[edit]

A period after handover (or practical completion) during which the owner may identify any shortcomings in relation to the building specification ('defects'), with a view to the contractor correcting the defect.[25]

Maintenance, repair and improvement

[edit]

Maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure, and supporting utilities in industrial, business, governmental, and residential installations.[26][27]

Demolition

[edit]

Demolition is the discipline of safely and efficiently tearing down buildings and other artificial structures. Demolition contrasts with deconstruction, which involves taking a building apart while carefully preserving valuable elements for reuse purposes (recycling – see also circular economy).

Industry scale and characteristics

[edit]

Economic activity

[edit]
Helicopter view of the Atacama Large Millimeter/submillimeter Array (ALMA) Operations Support Facility (OSF) construction site

The output of the global construction industry was worth an estimated $10.8 trillion in 2017, and in 2018 was forecast to rise to $12.9 trillion by 2022,[28] and to around $14.8 trillion in 2030.[1] As a sector, construction accounts for more than 10% of global GDP (in developed countries, construction comprises 6–9% of GDP),[29] and employs around 7% of the total employed workforce around the globe[30] (accounting for over 273 million full- and part-time jobs in 2014).[31] Since 2010,[32] China has been the world's largest single construction market.[33] The United States is the second largest construction market with a 2018 output of $1.581 trillion.[34]

  • In the United States in February 2020, around $1.4 trillion worth of construction work was in progress, according to the Census Bureau, of which just over $1.0 trillion was for the private sector (split roughly 55:45% between residential and nonresidential); the remainder was public sector, predominantly for state and local government.[35]
  • In Armenia, the construction sector experienced growth during the latter part of 2000s. Based on National Statistical Service, Armenia's construction sector generated approximately 20% of Armenia's GDP during the first and second quarters of 2007. In 2009, according to the World Bank, 30% of Armenia's economy was from construction sector.[36]
  • In Vietnam, the construction industry plays an important role in the national economy.[37][38][39] The Vietnamese construction industry has been one of the fastest growing in the Asia-Pacific region in recent years.[40][41] The market was valued at nearly $60 billion in 2021.[42] In the first half of 2022, Vietnam's construction industry growth rate reached 5.59%.[42][43][44] In 2022, Vietnam's construction industry accounted for more than 6% of the country's GDP, equivalent to over 589.7 billion Vietnamese dong.[45][46] The industry of industry and construction accounts for 38.26% of Vietnam's GDP.[47][48][49] At the same time, the industry is one of the most attractive industries for foreign direct investment (FDI) in recent years.[50][51][52]

Construction is a major source of employment in most countries; high reliance on small businesses, and under-representation of women are common traits. For example:

  • In the US, construction employed around 11.4m people in 2020, with a further 1.8m employed in architectural, engineering, and related professional services – equivalent to just over 8% of the total US workforce.[53] The construction workers were employed in over 843,000 organisations, of which 838,000 were privately held businesses.[54] In March 2016, 60.4% of construction workers were employed by businesses with fewer than 50 staff.[55] Women are substantially underrepresented (relative to their share of total employment), comprising 10.3% of the US construction workforce, and 25.9% of professional services workers, in 2019.[53]
  • The United Kingdom construction sector contributed £117 billion (6%) to UK GDP in 2018, and in 2019 employed 2.4m workers (6.6% of all jobs). These worked either for 343,000 'registered' construction businesses, or for 'unregistered' businesses, typically self-employed contractors;[56] just over one million small/medium-sized businesses, mainly self-employed individuals, worked in the sector in 2019, comprising about 18% of all UK businesses.[57] Women comprised 12.5% of the UK construction workforce.[58]

According to McKinsey research, productivity growth per worker in construction has lagged behind many other industries across different countries including in the United States and in European countries. In the United States, construction productivity per worker has declined by half since the 1960s.[59]

Construction GVA by country

[edit]
List of countries with the largest construction gross value added in 2018
Economy
Construction GVA in 2018 (billions in USD)
(01)  China
 
934.2
(02)  United States
 
839.1
(03)  Japan
 
275.5
(04)  India
 
201.2
(05)  Germany
 
180.5
(06)  United Kingdom
 
154.7
(07)  France
 
138.7
(08)  Canada
 
125.4
(09)  Russia
 
121.2
(10)  Australia
 
111.8
(11)  Indonesia
 
109.7
(12)  South Korea
 
93.0
(13)  Brazil
 
92.6
(14)  Mexico
 
89.0
(15)  Spain
 
80.0
(16)  Italy
 
78.9
(17)  Turkey
 
55.3
(18)  Saudi Arabia
 
40.2
(19)  Netherlands
 
39.5
(20)  Poland
 
39.4
(21)  Switzerland
 
36.3
(22)  United Arab Emirates
 
34.5
(23)  Sweden
 
33.3
(24)  Austria
 
27.2
(25)  Qatar
 
27.0

The twenty-five largest countries in the world by construction GVA (2018)[60]

Employment

[edit]
Ironworkers erecting the steel frame of a new building at Massachusetts General Hospital in Boston
A truck operator at Al Gamil, the largest construction company in Djibouti

Some workers may be engaged in manual labour[61] as unskilled or semi-skilled workers; they may be skilled tradespeople; or they may be supervisory or managerial personnel. Under safety legislation in the United Kingdom, for example, construction workers are defined as people "who work for or under the control of a contractor on a construction site";[62] in Canada, this can include people whose work includes ensuring conformance with building codes and regulations, and those who supervise other workers.[63]

Laborers comprise a large grouping in most national construction industries. In the United States, for example, in May 2023, the construction sector employed just over 7.9 million people, of whom 859,000 were laborers, while 3.7 million were construction trades workers (including 603,000 carpenters, 559,000 electricians, 385,000 plumbers, and 321,000 equipment operators).[64] Like most business sectors, there is also substantial white-collar employment in construction - out of 7.9 million US construction sector workers, 681,000 were recorded by the United States Department of Labor in May 2023 as in 'office and administrative support occupations', 620,000 in 'management occupations' and 480,000 in 'business and financial operations occupations'.[64]

Large-scale construction requires collaboration across multiple disciplines. A project manager normally manages the budget on the job, and a construction manager, design engineer, construction engineer or architect supervises it. Those involved with the design and execution must consider zoning requirements and legal issues, environmental impact of the project, scheduling, budgeting and bidding, construction site safety, availability and transportation of building materials, logistics, and inconvenience to the public, including those caused by construction delays.

Some models and policy-making organisations promote the engagement of local labour in construction projects as a means of tackling social exclusion and addressing skill shortages. In the UK, the Joseph Rowntree Foundation reported in 2000 on 25 projects which had aimed to offer training and employment opportunities for locally based school leavers and unemployed people.[65] The Foundation published "a good practice resource book" in this regard at the same time.[66] Use of local labour and local materials were specified for the construction of the Danish Storebaelt bridge, but there were legal issues which were challenged in court and addressed by the European Court of Justice in 1993. The court held that a contract condition requiring use of local labour and local materials was incompatible with EU treaty principles.[67] Later UK guidance noted that social and employment clauses, where used, must be compatible with relevant EU regulation.[68] Employment of local labour was identified as one of several social issues which could potentially be incorporated in a sustainable procurement approach, although the interdepartmental Sustainable Procurement Group recognised that "there is far less scope to incorporate [such] social issues in public procurement than is the case with environmental issues".[69]

There are many routes to the different careers within the construction industry. There are three main tiers of construction workers based on educational background and training, which vary by country:

Unskilled and semi-skilled workers

[edit]

Unskilled and semi-skilled workers provide general site labor, often have few or no construction qualifications, and may receive basic site training.

Skilled tradespeople

[edit]

Skilled tradespeople have typically served apprenticeships (sometimes in labor unions) or received technical training; this group also includes on-site managers who possess extensive knowledge and experience in their craft or profession. Skilled manual occupations include carpenters, electricians, plumbers, ironworkers, heavy equipment operators and masons, as well as those involved in project management. In the UK these require further education qualifications, often in vocational subject areas, undertaken either directly after completing compulsory education or through "on the job" apprenticeships.[70]

Professional, technical or managerial personnel

[edit]

Professional, technical and managerial personnel often have higher education qualifications, usually graduate degrees, and are trained to design and manage construction processes. These roles require more training as they demand greater technical knowledge, and involve more legal responsibility. Example roles (and qualification routes) include:

Safety

[edit]
At-risk workers without appropriate safety equipment

Construction is one of the most dangerous occupations in the world, incurring more occupational fatalities than any other sector in both the United States and in the European Union.[2][71] In the US in 2019, 1,061, or about 20%, of worker fatalities in private industry occurred in construction.[2] In 2017, more than a third of US construction fatalities (366 out of 971 total fatalities) were the result of falls;[72] in the UK, half of the average 36 fatalities per annum over a five-year period to 2021 were attributed to falls from height.[73] Proper safety equipment such as harnesses, hard hats and guardrails and procedures such as securing ladders and inspecting scaffolding can curtail the risk of occupational injuries in the construction industry.[74] Other major causes of fatalities in the construction industry include electrocution, transportation accidents, and trench cave-ins.[75]

Other safety risks for workers in construction include hearing loss due to high noise exposure, musculoskeletal injury, chemical exposure, and high levels of stress.[76] Besides that, the high turnover of workers in construction industry imposes a huge challenge of accomplishing the restructuring of work practices in individual workplaces or with individual workers.[citation needed] Construction has been identified by the National Institute for Occupational Safety and Health (NIOSH) as a priority industry sector in the National Occupational Research Agenda (NORA) to identify and provide intervention strategies regarding occupational health and safety issues.[77][78] A study conducted in 2022 found “significant effect of air pollution exposure on construction-related injuries and fatalities”, especially with the exposure of nitrogen dioxide.[79]

Sustainability

[edit]

Sustainability is an aspect of "green building", defined by the United States Environmental Protection Agency (EPA) as "the practice of creating structures and using processes that are environmentally responsible and resource-efficient throughout a building's life-cycle from siting to design, construction, operation, maintenance, renovation and deconstruction."[80]

Decarbonising construction

[edit]

The construction industry may require transformation at pace and at scale if it is to successfully contribute to achieving the target set out in The Paris Agreement of limiting global temperature rise to 1.5C above industrial levels.[81][82] The World Green Building Council has stated the buildings and infrastructure around the world can reach 40% less embodied carbon emissions but that this can only be achieved through urgent transformation.[83][84]

Conclusions from industry leaders have suggested that the net zero transformation is likely to be challenging for the construction industry, but it does present an opportunity. Action is demanded from governments, standards bodies, the construction sector, and the engineering profession to meet the decarbonising targets.[85]

In 2021, the National Engineering Policy Centre published its report Decarbonising Construction: Building a new net zero industry,[85] which outlined key areas to decarbonise the construction sector and the wider built environment. This report set out around 20 different recommendations to transform and decarbonise the construction sector, including recommendations for engineers, the construction industry and decision makers, plus outlined six-overarching ‘system levers’ where action taken now will result in rapid decarbonisation of the construction sector.[85] These levels are:

  • Setting and stipulating progressive targets for carbon reduction
  • Embedding quantitative whole-life carbon assessment into public procurement
  • Increasing design efficiency, materials reuse and retrofit of buildings
  • Improving whole-life carbon performance
  • Improving skills for net zero
  • Adopting a joined up, systems approach to decarbonisation across the construction sector and with other sectors

Progress is being made internationally to decarbonise the sector including improvements to sustainable procurement practice such as the CO2 performance ladder in the Netherlands and the Danish Partnership for Green Public Procurement.[86][87] There are also now demonstrations of applying the principles of circular economy practices in practice such as Circl, ABN AMRO's sustainable pavilion and the Brighton Waste House.[88][89][90]

See also

[edit]

icon Architecture portal icon Engineering portal

Notes

[edit]
  1. ^ a b c In the UK, the Chartered Engineer qualification is controlled by the Engineering Council, and is often achieved through membership of the relevant professional institution (ICE, CIBSE, IStructE, etc).

References

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A contractor[1][2] (North American English) or builder (British English),[3][4] is responsible for the day-to-day oversight of a construction site, management of vendors and trades, and the communication of information to all involved parties throughout the course of a building project.[5]

In the United States, a contractor may be a sole proprietor managing a project and performing labor or carpentry work, have a small staff, or may be a very large company managing billion dollar projects. Some builders build new homes, some are remodelers, some are developers.[6]

Description

[edit]

A general contractor is a construction manager employed by a client, usually upon the advice of the project's architect or engineer.[7] General Contractors are mainly responsible for the overall coordination of a project and may also act as building designer and construction foreman (a tradesman in charge of a crew).

A general contractor must first assess the project-specific documents (referred to as a bid, proposal, or tender documents). In the case of renovations, a site visit is required to get a better understanding of the project. Depending on the project delivery method, the general contractor will submit a fixed price proposal or bid, cost-plus price or an estimate. The general contractor considers the cost of home office overhead, general conditions, materials, and equipment, as well as the cost of labor, to provide the owner with a price for the project.

Contract documents may include drawings, project manuals (including general, supplementary, or special conditions and specifications), and addendum or modifications issued prior to proposal/bidding and prepared by a design professional, such as an architect.The general contractor may also assume the role of construction manager, responsible for overseeing the project while assuming financial and legal risks.There are several types of risks can occur include cost overruns, delays, and liabilities related to safety or contract breaches.

Prior to formal appointment, the selected general contractor to whom a client proposes to award a contract is often referred to as a "preferred contractor".[8]

Responsibilities

[edit]

A general contractor is responsible for providing all of the material, labor, equipment (such as heavy equipment and tools) and services necessary for the construction of the project. A general contractor often hires specialized subcontractors to perform all or portions of the construction work. When using subcontractors, the general contractor is responsible for overseeing the quality of all work performed by any and all of the workers and subcontractors.

It is a best practice for general contractors to prioritize safety on the job site, and they are generally responsible for ensuring that work takes place following safe practices.

A general contractor's responsibilities may include applying for building permits, advising the person they are hired by, securing the property, providing temporary utilities on site, managing personnel on site, providing site surveying and engineering, disposing or recycling of construction waste, monitoring schedules and cash flows, and maintaining accurate records.[9]

The general contractor may be responsible for some part of the design, referred to as the "contractor's design portion" (JCT terminology).[10]

United Kingdom, Commonwealth and Australia usage

[edit]

In the United Kingdom, Australia and some British Commonwealth countries, the term 'general contractor' was gradually superseded by builders during the early twentieth century.[citation needed] This was the term used by major professional, trade, and consumer organizations when issuing contracts for construction work, and thus the term 'general contractor' fell out of use except in large organizations where the main contractor is the top manager and a general contractor shares responsibilities with professional contractors.

General contractors who conduct work for government agencies are often referred to as "builders". This term is also used in contexts where the customer's immediate general contractor is permitted to sub-contract or circumstances are likely to involve sub-contracting to specialist operators e.g. in various public services.

United States and Asia usage

[edit]

In the United States and Asia, the terms general contractor (or simply "contractor"), prime contractor and main contractor are often interchangeable when referring to small local companies that perform residential work. These companies are represented by trade organizations such as the NAHB.[11]

Licensing requirements

[edit]

Licensing requirements to work legally on construction projects vary from locale to locale. In the United States, there are no federal licensing requirements to become a general contractor, but most US states require general contractors to obtain a local license to operate. It is the states' responsibility to define these requirements: for example, in the state of California, the requirements are stated as follows:

With a few exceptions, all businesses or individuals who work on any building, highway, road, parking facility, railroad, excavation, or other structure in California must be licensed by the California Contractors State License Board (CSLB) if the total cost of one or more contracts on the project is $500 or more.

In every state that requires a license, a surety bond is required as part of the licensing process, with the exception of Louisiana, where bonding requirements may vary in different parishes. Not all states require General Contractor licenses - these include Vermont, New Hampshire and Maine, among others.

Licensing qualifications

[edit]

Some general contractors obtain bachelor's degrees in construction science, building science, surveying, construction safety, or other disciplines.

General Contractors often learn about different aspects of construction, including masonry, carpentry, framing, and plumbing. Aspiring general contractors communicate with subcontractors and may learn the management skills they need to run their own company.

Experience in the construction industry as well as references from customers, business partners, or former employers are demanded. Some jurisdictions require candidates to provide proof of financing to own their own general contracting firm.

General Contractors often run their own business. They hire subcontractors to complete specialized construction work and may manage a team of plumbers, electricians, bricklayers, carpenters, iron workers, technicians, handymans, architects and roofers. General Contractors build their business by networking with potential clients, buying basic construction tools, and ensuring that their subcontractors complete high-quality work. General Contractors do not usually complete much construction work themselves, but they need to be familiar with construction techniques so they can manage workers effectively. Other reasons include access to specialist skills, flexible hiring and firing, and lower costs.

General contractor example

[edit]

A property owner or real estate developer develops a program of their needs and selects a site (often with an architect). The architect assembles a design team of consulting engineers and other experts to design the building and specify the building systems. Today contractors frequently participate on the design team by providing pre-design services such as providing estimations of the budget and scheduling requirements to improve the economy of the project. In other cases, the general contractor is hired at the close of the design phase. The owner, architect, and general contractor work closely together to meet deadlines and budget. The general contractor works with subcontractors to ensure quality standards; subcontractors specialise in areas such as electrical wiring, plumbing, masonry, etc.

See also

[edit]

References

[edit]
  1. ^ Davies, Nikolas, and Erkki Jokiniemi. Architect's illustrated pocket dictionary. Oxford: Architectural Press, 2011. 289. Print.
  2. ^ "Collins Dictionary".
  3. ^ "Merriam-Webster".
  4. ^ "Builder vs. Construction Manager". 10 April 2023.
  5. ^ Hendrickson, Chris. & Au, Tung (2000), The Design and Construction Process. Project Management for Construction: Fundamental Concepts for Owners, Engineers, Architects and Builders, chapter 3
  6. ^ "What's the difference between a developer and a builder?". Chicago Tribune. 2005-01-23. Retrieved 2023-07-18.
  7. ^ Shekhar, R. K. (2005), Academic Dictionary of Architecture, Delhi: Isha Books, 69
  8. ^ Department of Defense Appropriations Part 3: Procurement. Washington DC: U.S. Government Printing Office. 1968. p. 224.
  9. ^ Allen, Edward, & Iano Joseph (2009). Fundamentals of Building Construction Materials and Methods. 5th ed. Hoboken, N.J.: John Wiley & Sons.
  10. ^ Joint Contracts Tribunal, Intermediate Building Contract with contractor’s design (ICD), current edition 2019, accessed 7 July 2021
  11. ^ "About NAHB". www.nahb.org. Retrieved 2023-07-18.

Sources

[edit]

 

Determining a realistic budget is the first step. Consider material costs, labor, and potential unforeseen expenses.
A: Are you looking for a cosmetic refresh (new paint, fixtures) or a full gut renovation (new layout, plumbing, electrical)?
A: Modern, traditional, farmhouse, minimalist? Knowing your style helps narrow down design choices and creates a cohesive look.
A: Understanding the projects estimated duration helps with planning and managing expectations.