Extension Builders in West Kensington

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (19 reviews)

Easily find verified West Kensington Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in West Kensington.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in West Kensington

3531 Results

Sort by:

CARVE Engineering Co Ltd
Rating: 1 out of 5
Extension Builder in West Kensington
We undertake large and small construction rebuild projects, house extension and loft conversion, shop design and decoration, home design and decoration, customized furniture. We can provide professional drawing and floor plan as well.
Get in touch
Latest review:
Extensions- 19 Sep 2022
Man Ho or Calvin Ho' or Man Fu Ho, who owns Carve Engineering Co. Ltd. He also has a Hong Kong branch carve-eng.com . I didn't know he subcontracted the whole project to a group of Chinese mainlanders who couldn't speak English. And he asked a British Gas gas engineer to sign off the plumbing work. I obtained the planning in December 2021. The work started on 31/1/2022 and almost finished now 19/9/2022. It supposed to end in three months time as they promised. It's only a single storey side extension and shouldn't be left unfinished with pipes broke. The workers only came to work once a week and sometimes the work stopped for a month or so. The price included the purchase of a boiler and installation. But there's no timer or thermostat and I was asked to purchase these and install them with extra cost. The workers' van broke down five times and they didn't turn up for five different days. There's no windowsill and they called this a standard window people would install. The exterior wall was painted inconsistent to our original wall and I had to argue to get them pebbledash and repainted. They left the fences on our neighbours. The pipes are still leaking. Shower leaked for 3 months. They even charged extra for the electricity sockets they installed in our kitchen. They took down the mains water supply switch and never install it back so our house has no in house mains water stop valve! They didn't hoover and didn't have a hoover. Avoid this company!
Lee Building Contractors Ltd
No reviews yet
Extension Builder in West Kensington
Extensions,Loft conversions, renovations, New Builds , refurbishments , Project Management, Steel installations, Roofing work,commercial works,contract projects
Get in touch
B.z.brothers ltd
No reviews yet
Extension Builder in West Kensington
At Bzbrothers, we are committed to transforming spaces and structures with a focus on quality and precision. extensive experience in construction, design, and landscaping to each project, ensuring innovative solutions that are both functional and visually appealing. From the solid foundations required in groundwork and bricklaying to the creative designs in landscaping, we handle each project with meticulous attention to detail. We cater to both residential and commercial clients, offering everything from comprehensive renovations to bespoke installations. Driven by a passion for excellence and a commitment to client satisfaction, we strive to exceed expectations at every turn. We believe in building lasting relationships with our clients, providing reliable service and superior results that make your investment worthwhile. Explore our services and discover how we can make your next project a success. At Bzbrothers, we don’t just build or renovate spaces—we enhance them, ensuring every project is a testament to our dedication and your vision.
Get in touch
NEWVIBEHOMEIMPROVEMENTS
No reviews yet
Extension Builder in West Kensington
"We are a comprehensive home transformation company specializing in high-quality extensions, full property refurbishments, kitchens, and more. While we handle every aspect of your build from the ground up, we are true specialists in luxury bathroom fitting and wet room installations.
Get in touch
AGbuilds
No reviews yet
Extension Builder in West Kensington
We provide high-quality, durable, and stylish solutions for homes and businesses. Our expertise covers modern windows and doors, security installations, and outdoor structures, ensuring safety, efficiency, and elegance in every project. We prioritise expert craftsmanship, top-grade materials, and customer satisfaction, helping you enhance your property with reliable and aesthetically pleasing solutions
Get in touch
HB building services
Rating: 5 out of 5
Extension Builder in West Kensington
Hi and welcome to HB groundwork & construction . We are a small building company local to Tunbridge Wells Kent, Specialising in all types of building and landscaping projects such as all types of brick work, Extensions, house renovations, drive ways, patios, landscaping, garden revamps, drainage and much more. Our aim is to make sure each of our customers are Satisfied with every project we complete. Our prices are competitive and we will not be beaten on price.
Get in touch
Latest review:
Driveways (Paved & Loose)- 26 Jul 2021
Henry and co were friendly and efficient and we’ve already had lots of positive comments about our new drive. In addition they got rave reviews on their tidiness and the quality of the finish from a very hard to please neighbour. Already recommended to several people. Thanks, Henry!
Mushroom Building Services
Rating: 5 out of 5
Extension Builder in West Kensington
We are a small building company with over 30 years experience based in Farnham. We offer a full building service from start to finish. We complete all work to the highest standard, no exceptions. We’re fully insured and qualified.
Get in touch
Latest review:
Conversions - General- 29 Sep 2022
The job - gutting our living room. Tearing down the ceiling, removing all old wallpaper and ripping up the floor in order to insulate and add lighting. While we were doing this, we decided to replace the main steel in the living room (which was oversize and impacted the floor height in the guest room) and do remedial works in the guest room. The steel replacement was not time budgeted, but Oli and Tony didn’t hesitate to quote,To make time for us and bring in the structural engineer. Probably added 3 weeks to their time on site. The trades they brought in (plumbing for heating, electrician for downlighters, structural engineer and plasterers) were all professional, did an excellent job and were all unfailingly polite. It was easy to build a good, positive relationship with them, to the point we felt comfortable giving them the keys to the house so they could work while we went away for two weeks. They sent photos of their progress and showed up and worked as if we were there. I was very impressed by the state of the house when we got back. They watered our plants (I didn’t ask) and they cleaned the hallway so that it was spotless. They did a good job for a fair price, and were always cheerful and open to conversation. They came back to do a few snagging items without being chased (this is a huge thing for me, after having chased many builders to finish bits and pieces). I would definitely use them again.
JAVALI
No reviews yet
Extension Builder in West Kensington
Hi my name is George and I live in the beautiful Surrey village of Shere. I have worked in the surrounding area for several years. I have built up a local reputation and business is picking up fast. JAVALI has now been created to accommodate, if you would like any references dont hesitate to contact.
Get in touch
Davies Construction & Brickwork ltd
No reviews yet
Extension Builder in West Kensington
Build developments group ltd is a construction company serving Buckinghamshire and Hertfordshire over the years, the director has been established in the building industry for 13years. We offer the complete package from demolition, excavation, brickwork to just getting you into a watertight shell. We cover all digger/driver work, Demolitions, Excavations, new builds, extensions, garden walls, flint work and landscaping.
Get in touch
MM brickwork
No reviews yet
Extension Builder in West Kensington
Experienced bricklayer able to carry out any type of brickwork you may require.
Get in touch
j ward joint sealing specialists ltd
Rating: 5 out of 5
Extension Builder in West Kensington
Est 2010, we have grown our business and expanded . We have worked for some of the largest developers in the country on properties up to £70 million. 2015 was the turning point for us going to a Ltd company ahead of target. We expanded our business to bespoke design and build and specialize in refurbishment properties and major extensions with a large client base across the east, south, and west counties, including work in the Cotswolds. We have now expanded in PROFESSIONAL SNAGGING. We also specialize in feature wall paneling. All of our tradesmen are certified in their fields. References and photographic evidence can be provided. We take the strain from any job and provide all trades, Project management and Produce quality work to the highest of standards.
Get in touch
Latest review:
Extensions- 8 Oct 2025
Jason and his team have just completed our wraparound extension, and the result has exceeded all expectations. Their workmanship, accuracy, and attention to detail are outstanding, and the whole process was smooth and stress-free. They stuck to timings, kept the budget in mind, and made everything feel effortless. Partway through the build, Jason had to undergo an operation and was signed off for five weeks. Remarkably, nothing was delayed — his team carried the project seamlessly, and with Jason still on site when he was able to be, everything ran perfectly. It’s a real credit to how capable they all are and the consistently high standards they work to. The only negative thing I can say is that we were sad to see them leave – they’ve been such a positive part of our daily lives over the past eight weeks. The finish is exceptional and we’re absolutely over the moon. We couldn’t recommend Jason and his team highly enough.
R White Home Improvements
No reviews yet
Extension Builder in West Kensington
Based in Chafford Hundred, Essex we are a small company employing a friendly team that specialise in extensions, kitchens and bathrooms. We also undertake most home improvement projects. We've been a member of my builder since 2016 but have worked from customer recommendations alone to date.
Get in touch
Eota ltd
No reviews yet
Extension Builder in West Kensington
Eota Ltd is a start up Electrical and Renewable energy installation company with a huge difference. Our mission is to utilise 50% of trading profits to help reduce the cost of renewable installs, tackle the cost of living and reduce enviromental damage. We are a small family run company who are just starting our journey and we want to work with you and for you. Help us on our mission!
Get in touch
Raghbir Singh
Rating: 5 out of 5
Extension Builder in West Kensington
Carpenter with 15 years of experience providing reliable, high-quality workmanship across Dunstable, Luton, Leighton Buzzard and surrounding areas. Specialising in all aspects of carpentry including first fix, second fix, doors, skirting, architraves, flooring, kitchen fitting and bespoke work. From small jobs to full renovations, all work is completed to a high standard with attention to detail. Reliable, punctual and tidy, with a focus on getting the job done properly and keeping customers satisfied.
Get in touch
Latest review:
Carpentry- 17 May 2026
Raghbir did an excellent job and completed the work on time, exactly as agreed. What stood out most was his honesty and professionalism there were no hidden charges or unexpected costs, which can often happen with some tradesmen. He also didn’t cut corners and delivered quality workmanship throughout. I would highly recommend him for any carpentry work.
Trojanconstruction
No reviews yet
Extension Builder in West Kensington
Trojanconstruction is a family run firm building extensions and undertakeing everything from garde ing work 2 full house refurbishments i have a very skilled and experianced team at your service
Get in touch
R.W brickwork
No reviews yet
Extension Builder in West Kensington
Bricklayer with 10 years experience neat and tidy
Get in touch

4.2

Top rated Extension Builders

Our Extension Builders in West Kensington, are rated 4.2 out of 5 based on 19 reviews from customers like you.

Quality screening

Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

What types of services are offered by local extension builders in West Kensington?

Building an extension is a major milestone for any home. It’s not just about adding extra space, it’s a big step that can transform how you live day to day, opening up new possibilities for comfort, lifestyle, and family needs.

This is why it’s so important to find the right extension builders in West Kensington for you. They can help with a variety of tasks and projects, including:

Extending your home with an extra room
Two+ storey extensions
Adding partition walls to create more rooms
Building annexes or external structures

To find the right extension builder near you, simply post your job on MyBuilder. Explain the type of help you’re looking for, and then home extension builders in West Kensington who are available and interested can respond to your post.

Browse profiles, read customer reviews and get quotes from your chosen West Kensington extension builders, all before you decide who to hire.

What are the hourly rates of extension builders in West Kensington?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in West Kensington will charge between £16 and £42 per hour.

Single-storey rear extensions cost between £20,000 and £60,000 depending on size and finish.
The cost of double-storey extensions, which add more space and value, can range from £100,000 to over £170,000.
Larger wrap-around extensions that combine multiple extension types can range from £40,000 to over £120,000.

The cost of an extension will vary depending on your property. For instance, extending in certain areas may require structural adjustments to ensure stability, which can increase your material and labour costs.

To get an accurate price for your home extension, request detailed quotes from several West Kensington extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your West Kensington home extension project is likely to cost.

Find extension builders in West Kensington with MyBuilder

Hiring the right extension builder in West Kensington with MyBuilder couldn’t be easier. Just follow these simple steps:

Step 1: Post your extension project on MyBuilder

Whether you’re planning a single-storey extension, a loft conversion, or adding a new room, post your job on MyBuilder to find local West Kensington extension builders. Once your job is live, we’ll share it with home extension builders in West Kensington who can express their interest.

Step 2: Compare different extension builders in West Kensington

When you start receiving interest, review profiles of local West Kensington extension builders, check their previous work, and read real customer reviews. Ask about timelines, materials, and request detailed quotes.

Step 3: Hire West Kensington extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in West Kensington, compare their experience, guarantees, and costs before choosing who to hire.

You’ll also have confidence knowing that every tradesperson on MyBuilder is verified through several checks, including:

ID verification: When a tradesperson joins MyBuilder, we ask for a valid ID, such as a passport, ID card, or eIDAS certificate.
Company verification: For tradespeople operating under a company, we make sure every tradesperson has a registered business.

Did you know? Our continuous monitoring and complaints process ensures that tradespeople who don’t meet our standards are promptly removed from MyBuilder’s platform.

West Kensington extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a West Kensington extension builder before hiring?

Before hiring an extension builder in West Kensington or extension building company in West Kensington, ask a few key questions to make sure you’re choosing the right professional for your home extension project.

What qualifications and experience do you have as an extension builder in West Kensington?

An extension builder in West Kensington should have a strong track record with similar projects and relevant building qualifications or trade memberships, such as the Federation of Master Builders (FMB) or TrustMark.

Will my home extension meet all building regulations and planning requirements?

Your West Kensington extension builder should ensure the project complies with Building Regulations and, where necessary, handle or assist with planning permissions. Ask how they manage building control inspections and what documentation you’ll receive once the project is complete.

What experience do you have with similar extensions in West Kensington?

Ask to see examples of their previous work, or view examples of their work on MyBuilder. Ideally projects similar to yours in scale and design. This helps you assess the West Kensington extension builder’s ability to deliver a result that meets your expectations.

How long will the extension take to complete?

Extension project timelines can vary depending on size, complexity, and weather. A typical single-storey extension might take around 8 - 12 weeks. Request a detailed schedule so you know what to expect and when key milestones will be reached.

Do you offer a guarantee for your work? Most West Kensington extension builders offer a guarantee or warranty on their work, often between 1 and 10 years depending on the project and materials used. This gives you assurance that any issues will be resolved after completion.

If you still have questions about the professional you are looking to hire, we have a full detailed guide on hiring the right builder here.

FAQ: Common questions about home extensions in West Kensington

Can an extension builder in West Kensington help with planning permission?

Yes, many extension builders in West Kensington can guide you through the planning process. They can help prepare drawings, advise on local requirements, and liaise with your local council to ensure your project meets all necessary regulations.

Can an extension builder in West Kensington handle everything from design to construction?

Many West Kensington extension builders offer full design-and-build services, managing both the architectural planning and construction stages. Ask your builder whether they can provide a complete package or if you’ll need to hire an architect or designer separately.

Will an extension builder in West Kensington help with materials and finishes?

Yes, most extension builders in West Kensington can source materials and offer advice on finishes that suit your design and budget. You can also choose to supply certain materials yourself, just make sure this is agreed upon before work starts.