Extension Builders in West Kensington

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

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Some of our top rated extension builders in West Kensington

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UTALE
Rating: 4.7 out of 5
Extension Builder in West Kensington
UTALEE PLASTARING Drylining RENDERING General buildings
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Latest review:
Plastering- 12 Jun 2026
Great communication clear pricing and really good and effecient work. Will use again!
CASTLE PEAK ROOFING LIMITED
Rating: 5 out of 5
Extension Builder in West Kensington
Welcome to CASTLE PEAK ROOFING LIMITED, your trusted partner for top-quality roofing solutions. Our experienced team delivers expert installations, repairs, and maintenance, ensuring your home or business is protected with the highest standards of craftsmanship and materials. Choose CASTLE PEAK ROOFING LIMITED for reliable, durable roofing you can count on. Expert in GRP FIBRE GLASS ROOF and TORCH FELT BEST WISHES
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Latest review:
Roofing (Flat)- 10 Dec 2024
Very happy with their professionalism and work that was carrierd out was satisfactory
ALT’s Builders
Rating: 5 out of 5
Extension Builder in West Kensington
We are a family run business with more than a decade of experience. At ALT’s Builders Ltd we pride ourselves on an efficient and friendly service, and achieve 100% costumer satisfaction ethic. So no matter how big or small your job is we can help. ALT’s Builders Limited is a leading and reputable Construction Company serving around London Ever since we opened for business, we’ve taken a comprehensive approach to construction industry, providing our clients with a wide range of services to cover their needs. our clients are our Number one priority and we go extra mile to make sure they’re completely satisfied. we stand by the excellence of our work and provide clients with personalized attention based on their specific needs. With this service, we’re fully prepared to tackle even the most complex projects and stand by the exceptional quality of our work.
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Latest review:
Loft Conversion- 31 Mar 2026
We recently hired Altin to do our mansard loft conversion and honestly, it was a really good experience from start to finish. He was always on time, worked really hard, and his whole team put in a lot of effort every day. Communication was easy and straightforward, which made things much less stressful for us. The project was finished on time as agreed, and we’re really happy with the quality of the work. Altin was also super helpful whenever we had questions and helped a lot with building control, which made a big difference. It’s quite a messy job (cutting through the ceiling and putting in a staircase), but they did everything they could to keep things as clean and tidy as possible, which we really appreciated. Overall, we had a great experience and are very happy with how everything turned out. I’d definitely recommend Altin to anyone thinking about a loft conversion.
Chelsea Contractors Ltd
No reviews yet
Extension Builder in West Kensington
My name is Nasser. I am the founder and managing director of Chelsea Contractors Ltd. I'm new on MyBuilder, but please check out our online presence/reviews on Instagram/Google/Checkatrade. I have completed over 50 extensions, loft conversion, refurbishment, or a combination of all projects in the past 10 years. We strive to deliver projects on budget and on time. Our track record proves this. Client satisfaction is our mission. We are fully insured, provide insurance-backed guarantees, and employ qualified personnel.
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JBS Jonay Building Services Ltd
Rating: 5 out of 5
Extension Builder in West Kensington
Jonay Building Services LTD has been a consistent and trustworthy Construction Company in North London since 2004.We operate all over London and surrounding areas. J.B.S undertakes a great range of works for a huge variety of clients; From residential extensions, loft conversions and renovations, to commercial landscaping and shop fitting. Whatever your project we have a solution for you.
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Latest review:
Restoration & Refurbishment- 13 Jun 2023
This company was very professional. The work was completed on time and to a high standard. The work was also, good value for money. I would recommend JBS services to anyone seeking either home or business general refurbishment and building works.
Meshi
Rating: 5 out of 5
Extension Builder in West Kensington
Meshi Finesse
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Latest review:
Handyman- 28 Nov 2021
Did an amazing job with the shed
Wayne
No reviews yet
Extension Builder in West Kensington
I have been a bricklayer for 10years. I can do Extensions, pointing and more
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Rutba design & build ltd
Rating: 5 out of 5
Extension Builder in West Kensington
I provide complete building services like loft conversion, side & rear extensions, kitchen, bathroom, plumbing, underfloor heating, electric & driveways, painting & decorating etc.
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Latest review:
Absolutely great quality of work and outstanding service. Jagjeet and his team have done a great job without any delays. Honest and hard working. Very happy to recommend Rutba
MarioM Construction Ltd.
Rating: 5 out of 5
Extension Builder in West Kensington
We have spent 15 years in the construction sector. Having experience both in the private sector and commercial sector, we use innovative and modern technology to complete your work. In effect, we achieve higher precision, shorter work times and due to this a lower cost for you. Our deal with a builders’ merchant allows customers to access unique deals which are not available elsewhere. You can learn even more about us by looking at our past projects
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Latest review:
Extensions- 18 Jul 2016
Mario is a brilliant guy with full knowledge of the job. His workers were very punctual and hardworking and finished the job well. I would definitely recommend Mario to my friends and relatives and will use him in the future. Excellent Finish!!!
ALWAYS THERE LIMITED
No reviews yet
Extension Builder in West Kensington
We new to My Builder, but we've been delivering quality work since 2015. Always There provides Handyman, Maintenance, Painting and decorating, and comprehensive building and renovation services. Our experienced team specializes in extensions, full home renovations, loft conversions, and property repairs, delivering high-quality craftsmanship throughout every project. We focus on efficient project management, transparent communication, and meticulous attention to detail. Our commitment ensures a smooth process and results that meet your exact specifications and high standards. We are dedicated to professional execution and client satisfaction, ensuring we are "Always There" for our customers. Why choose Always There? Established: Proven expertise since 2015. Skilled: High-quality, precise construction. Reliable: Dependable project delivery. Dedicated: Focused on client satisfaction. Contact us for a free estimate.
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Compact Building Ltd
Rating: 4.8 out of 5
Extension Builder in West Kensington
Compact Building LTD Renovations | Refurbishments | Plumbing – Across London From full home makeovers to small upgrades, we deliver expert results with 0% interest payment options. Make It Compact. Make It Perfect.
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Latest review:
Bathroom Fitting- 21 May 2026
Petru fitted a new shower tray. It was a complicated job due to the location of the piping. Petru was very meticulous and ensured he completed the job correctly and to a high standard.
Refurbishment service gold
Rating: 5 out of 5
Extension Builder in West Kensington
I am an experienced professional with seven years of industry expertise. I always aim to deliver work of the highest quality, as every client is valuable to me
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Latest review:
Vladimir quoted. Turned up on time and did an amazing job - despite my not buying the correct size doors. He was professional and did an amazing job and was that rare thing- a workman you don’t mind having in your home. I have booked him to do more work after Christmas.
DNR Maintenance LTD
Rating: 5 out of 5
Extension Builder in West Kensington
Good team with over 40 year's experience within the building industry, No job to small or big. Very affordable from start to finish even when customers move the boundaries of the finishing line of a job requested. We're opened minded to customers goals ambition, comfortable living and progress in life. Any contractors needed to carry out any jobs are specialised at their craft at hand. which always gives customers peace of mind and quality. All works shall be paid at stages of projects.
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Latest review:
Waste Clearance- 9 Jan 2026
First to respond, reasonable price and very prompt. From first contact to removal was within 2 hours. Left site spotless. Will definetely use again. Thanks Dave
Pro Construction London Ltd
No reviews yet
Extension Builder in West Kensington
Pro Construction London is a trusted London-based building company with over two decades of experience delivering high-quality renovations, refurbishments, and property maintenance. We pride ourselves on our professionalism, reliability, and attention to detail, ensuring every project is completed to the highest standard. From full property renovations and loft conversions to bespoke finishes and one-off repairs, we provide a seamless service from start to finish — clear communication, transparent pricing, and a tidy worksite every time. Our reputation is built on satisfied clients who return to us for future projects, knowing they can rely on a skilled and dedicated team to bring their ideas to life.
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Exquisite Design & Build Ltd
Rating: 5 out of 5
Extension Builder in West Kensington
Welcome to Exquisite Design & Build, a premier construction company based in London. We specialise in delivering exceptional construction work and Architectural & Structural Design services to both Commercial & Residential Clients. Our comprehensive offerings include the full range of Building & Refurbishment Works, Planning Applications, 2D & 3D Design and Visualisations, Structural Design, Project Management and detailed Estimates. “Exquisite” - carries the implication that every detail of our work, is of rare and appealing excellence. We transform your vision into reality with precision and professionalism, ensuring a seamless and satisfying experience from concept to completion. Our company is TRUSTMARK registered company, a Government-endorsed sign of consumer protection for home improvements, repairs, renewable energy installations and low energy retrofits. We are also member of the FEDERATION OF MASTER BUILDERS.
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Latest review:
Exquisite Design and Build recently reworked and refurbished our new, six bedroom detached house, having previously completed a kitchen extension at our last property. Andrei’s work is of an incredibly high standard. He shows great attention to detail throughout the entire process. Not only does he execute the work beautifully, but he offers great design ideas and and suggestions. With regard to contracting, pricing and invoicing, Andrei provides clear and accurate documentation which gives us complete trust in his ability to work within our budget. Andrei and his team are an absolute pleasure to work with; hardworking, punctual and tidy. I have recommended them to three other friends, all of whom chose to work with him on their extension/refurbishment projects and were equally delighted with the results. I would not hesitate to recommend Exquisite Design and Build to anyone, regardless of the size and complexity of their project.
Castle view construction Surrey Ltd
No reviews yet
Extension Builder in West Kensington
Castle view construction Surrey Ltd is a building and refurbishment company delivering high quality construction services across residential and commercial projects. We specialise in full property renovations extensions structural works fit outs and maintenance
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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.

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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.