Extension Builders in West Kensington

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (21 reviews)

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Some of our top rated extension builders in West Kensington

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KUBEL LTD
Rating: 5 out of 5
Extension Builder in West Kensington
Welcome to KUBEL LTD, your trusted partner for all your construction and renovation needs. We specialise in building and renovating extensions, roofs, and gardens to transform your home into your dream space. With our expertise and dedication to quality, you can trust that your project will be completed on time and to your satisfaction.
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Latest review:
Wonderful and honest. Excellent finish.
Buildstead Development Ltd
Rating: 5 out of 5
Extension Builder in West Kensington
Our team at Buildstead has over 25 years of experience in the construction industry covering a wide range of project types. We truly are your "one-stop shop" when it comes to your project. From design to build, we pride ourselves on our integrity, the quality of our work and the working relationship we enjoy with our clients. With full project management included, you will be kept up to date at each step along the way ensuring complete peace of mind.
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Latest review:
Kitchen Fitting- 5 Nov 2020
An incredibly positive experience from start to finish. I found Robbie and team were hard workers, very likeable and provided brilliant results. Comms throughout were excellent. With Robbie happy to discuss the job over the phone beforehand and put our minds at ease. A big shout out to the team for undertaking this work during COVID. We understand the pressures this places on our tradespeople and we thank Robbie and his team for their diligence and commitment to wearing masks in our home and working safely. A brilliant experience.
Volodymyr Girkovskyi
Rating: 4.7 out of 5
Extension Builder in West Kensington
I am responsible, I do my job carefully, I have extensive experience in building and renovating houses.
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Latest review:
Handyman- 9 Oct 2025
Good job, done as agreed
WOODHOUSE BUILDERS LIMITED
Rating: 4.8 out of 5
Extension Builder in West Kensington
Welcome to Woodhouse Builders Ltd, we cover all aspects of property maintenance and no job is too small or big for us. If it’s a small decorating job or full property renovation , loft conversion or extension , we are here to help and provide the best services possible . Our success is built on providing the best services and ensuring that all our customers are happy with our services.
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Latest review:
Extensions- 6 Apr 2020
Art & team did a brilliant job in building my rear extension and renovating the whole apartment. Communication was excellent throughout and the job was completed on time and to the agreed budget. The finish throughout was to a high standard. I would definitely work with these guys again and highly recommend. Regards MZ
Guildkey Builder
Rating: 4.9 out of 5
Extension Builder in West Kensington
Welcome To GUILDKEY BUILDER's, We are a small company and specialise in: Loft conversions, Side and rear Extensions also double extensions and full refurbishments We also carry out small jobs such as kitchens fittings and bathroom fittings, developing properties into flats, We provide quality service to our customers. We want you to live in a better and secured Home
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Latest review:
Extensions- 31 Jul 2025
Absolutely incredible from start to finish! Professional, knowledgeable and easy to work with. Managed to think on his feet and fix unexpected problems, gave advice and was always polite and friendly! My house is completely transformed & I’ll definitely be using Kaiser again for the next house Reno!
CCM CAPITAL CONSTRUCTION LIMITED
Rating: 4.8 out of 5
Extension Builder in West Kensington
All construction work
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Latest review:
Bathroom Fitting- 30 Nov 2025
Mohsen and his team are very professional workers. They communicated clearly with me during the quoting process and were very helpful. They replaced my shower tray and shower screen beautifully and exceeded my expectations. Highly recommend their work!
Pawel
Rating: 5 out of 5
Extension Builder in West Kensington
I am part of a dedicated two-man company with over 15 years of experience in the construction industry. We specialize in a wide range of construction projects, from extensions and loft conversions to garden transformations, as showcased in the photos below. When you choose me, you’re not just hiring a builder—you’re investing in exceptional craftsmanship, meticulous attention to detail, and a commitment to exceeding your expectations. I take great pride in my work, and my recent projects speak for themselves. I’d be delighted to share examples and even arrange visits to completed sites, where you can see the quality of my work firsthand and hear directly from satisfied clients. Your satisfaction is my priority, and I am committed to bringing your vision to life with professionalism and care. I look forward to discussing how I can help make your project a reality. Best regards,Paweł
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Latest review:
The job was to remove a stud wall with an archway between my kitchen and hall. Pawel was excellent from start to finish. He was good to communicate with before, and answered my questions fully. He turned up on time, was very neat and kept the noise down. He did a great job and cleaned up afterwards. I’d recommend!
DC Brickwork
Rating: 5 out of 5
Extension Builder in West Kensington
Dear Customers I am honest trustworthy reliable and hardworking and I have over 25 years experience in the industry.
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Latest review:
Bricklaying- 29 Jun 2017
I would recommend Damian. Did a good job, good communication and was on site when he said he would be. Polite and friendly. I would be happy to use again.
Dimitrios Spanos
Rating: 3.7 out of 5
Extension Builder in West Kensington
KDG Building & Consulting Services is specialist in all aspects of general building and property maintenance, extensions, loft conversions, structural waterproofing and painting and decorating related works for both private and commercial Clients in Central and Greater London. We take pride in our bespoke building services and make sure every project is nothing less than what our Clients will expect, driven by our values to deliver long lasting and high standards results.
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Latest review:
Tiling- 28 May 2020
Did not arrive to complete the job or have the professionalism to cancel in advance. Unreliable company.
KBS London Ltd
Rating: 5 out of 5
Extension Builder in West Kensington
We are a North London Carpentry and General building company. I am a Qualified Carpenter from New Zealand, I have 30 years experience with 20 in London. We can carry out all works on residential, retail and commercial projects, from strip out to completion. We have a network of tried and proven tradesmen and suppliers. We are Quick Clean happy to work out of hours if necessary. I will do you a free quotation and happy to discuss works and guide you if necessary. Karl
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Latest review:
Carpentry- 8 Jun 2026
Responsive and good communication - delivered the job as planned and quoted. Would recommend.
PACHO CREATE LTD
Rating: 5 out of 5
Extension Builder in West Kensington
Pacho Create specializes in high-quality loft conversions, home extensions, and full refurbishments—transforming homes into beautiful, functional spaces. With a focus on craftsmanship, planning, and client satisfaction, we bring your vision to life on time and on budget. Let me know if you want a more premium, modern, or friendly tone.
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Latest review:
Tiling- 24 May 2026
I cannot recommend John from Pacho Create Ltd highly enough. I'm a very particular client with high standards, I was impressed by his care, patience, and professionalism throughout. He clearly takes pride in delivering quality work and paid close attention to every detail. Living in a small flat, I was concerned about dust, but John proactively created a solution to minimise disruption, which I really appreciated. He also gave excellent advice on budget-friendly waterproofing products. We had a challenge with large-format tiles, but John worked closely with me to plan the layout, ensuring a natural, balanced finish. The workmanship is outstanding – minimal wastage, precise alignment, and superb attention to detail. I wouldn’t hesitate to use John again, in fact, I’m already planning to have him back to tile around my bath in the near future. I highly recommend him to anyone looking for a skilled, reliable professional.
DME DEVELOPMENTS LTD
Rating: 5 out of 5
Extension Builder in West Kensington
Hi Dan here at DME Developments Ltd, where we specialise in refurbishing domestic properties and have a wealth of experience in both small and large scale projects, work on all types of projects from simple kitchen/bathroom remodels, plumbing/electrics, all the way up to full High-end home refurbishments in and around the SW London area. If you are looking for an exceptional finish on your project, please look no further.
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Latest review:
Carpentry- 29 Jul 2023
Job well done, very professional and great manners. He did a great job within 4 hours. Thank you very much.
XTEND LONDON LTD
Rating: 5 out of 5
Extension Builder in West Kensington
Hello, we are XTEND London LTD. We have over a 100 years combined experience as a team in the building industry specialising in extensions, roof conversions, plastering, house refurbishments and decoration, We have got a hardworking and skilful team of qualified trades men including electricians and gas safe plumbers ready to meet your building needs and ideas! We look forward to working with you to build your dream home. Many thanks, XTEND LONDON LTD.
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Latest review:
Extensions- 8 Mar 2026
We had a fantastic experience with Xtend London Ltd and couldn’t be happier with the work carried out. The whole project was handled very professionally from start to finish. The team worked at a great pace without ever compromising on quality, and the price was very fair for the standard of work delivered. Throughout the process they gave us really helpful advice and guidance, which made everything much easier and ensured the best decisions were made along the way. Communication was also excellent – whenever the team wasn’t on site, messages and questions were answered very quickly. A special thank you to Lucas, Dean, Eldi and the rest of the team for all their hard work and dedication. It’s clear they take a lot of pride in what they do. We would absolutely recommend Xtend London Ltd to anyone looking for a reliable and professional building company, and we would definitely use them again in the future.
W4 Builders
Rating: 5 out of 5
Extension Builder in West Kensington
We do all kind of building services in west London. We do painting, decorating as well as plumbing and electrics. We do bathrooms and house extensions and full property refurbishments.
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Latest review:
Robert Biegala has done laminate flooring, decorating and other tasks in my office in Farringdon. It was pleasure to work with Robert as he is a reliable, responsible and trustworthy person. His communication was consistent and reassuring. Robert is proactive and finds solution to any problems which arise during works. I would highly recommend his services.
Valens Construction Ltd
Rating: 4.7 out of 5
Extension Builder in West Kensington
We work in construction industry for many years and doing all type of building work which include Side & Rear Extension, Kitchen Refurbishment, Loft Conversion, Convert into HMO, plumbing & electrical, carpentry etc
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Latest review:
Kitchen Fitting- 1 Feb 2026
Valens Construction done a good job fixing the kitchen. Made sure every step was done with extra care
Olgert Doko
Rating: 4.8 out of 5
Extension Builder in West Kensington
My name is Olgert and my team and I are ready to give you a quote, on any building needs - painting, plastering, tiling, roofing, extensions and many other services. We are friendly, reliable and professional and we care about our work. Give us a call today for a free quote. We are located in North West London and we have more than 15 years experience in construction.
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Latest review:
Tiling- 15 Sep 2021
Very professional and helpful from the beginning to the end. Great work, tiling was finished on time and to a great standard. Our new restaurant floor looks great and customers love the new look. Would definitely recommend and will use again. Thanks Team Doko

4.2

Top rated Extension Builders

Our Extension Builders in West Kensington, are rated 4.2 out of 5 based on 21 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.