Extension Builders in West Hampstead

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.3 (19 reviews)

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Some of our top rated extension builders in West Hampstead

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W&T Building Maintenance LTD
Rating: 5 out of 5
Extension Builder in West Hampstead
WT Construction Service LTD. has been in business since 2002 and we`re specialists in design, planning, structural, building service, house extensions, loft conversions, joinery and renovation work covering whole of London.We guaranteed high quality finish on competitive price. We`re signed FMB,TRUSTMARK
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Latest review:
William and his company fitted a new kitchen for me and did the painting and wallpapering as well. They did a professional high quality job within a short time. I was absolutely satisfied with their service and their prices. They work fast, clear and precisely. I would highly recommend them to anyone.
MarioM Construction Ltd.
Rating: 5 out of 5
Extension Builder in West Hampstead
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!!!
D.S builders
Rating: 5 out of 5
Extension Builder in West Hampstead
Hi there I am a reliable tradesman and pay etention to detail. Been in the building industry for over 20 years.
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Latest review:
Tiling- 19 Apr 2023
Steve was very helpful and worked quickly to get the job done He is very knowledgeable and also completed another job for me I would definitely recommend him He helped me choose products and collected materials I needed Very glad I chose him to complete the work
first4builders
Rating: 5 out of 5
Extension Builder in West Hampstead
Loft conversions, house extensions. All kinds of renovation and refurbishment: doors and windows, flooring, tiling, bathroom and kitchen fitting. Building with confidence!
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Latest review:
MR ZAIKA DID A BIG JOB FOR ME,WHICH HE FINISHED IN GIVEN TIME .HE BUILT A REAR EXTENTION,AND DID RENOVATION SUCH AS FLOORING,REMOVING AND INSTALLING DOORS,TILING,REMOVING AND CHANGING WINDOWS,BUILDING A NEW KITCHEN,AND BATHROOM.HE WAS RELIABLE AND DID EVERYTHING TO THE BEST OF HIS ABILITY AND AS HE HAD PROMISED. HIS WORK IS EXTREMELY PROFESSIONAL AND CLEAN I AM VERY HAPPY WITH MR ZAIKA'SWORK . I WOULD RECOMMEND MR ZAIKA HIGHLY AND I AM SURE ANYONE GIVING HIM WORK WOULD BE VERY HAPPY AS I HAVE BEEN.
Patrick the Builder Ltd
Rating: 5 out of 5
Extension Builder in West Hampstead
Hi I’m PATRICK from Patrick the builder end I’m very happy to the next job for you General building Brick work Block work Full Refurbishment Loft Conversion Fibreglass roof Garage conversion Dive way Patios Garden conversion & Maintenance
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Latest review:
Extensions- 13 Mar 2022
Patrick and his team were hired to build a garden room. Reasonably priced, offers solutions to problems that might arise during building work, polite and easy to work with. He will also bring his expertise into the project and suggest different ways of doing things or using different products. Happy with the build and will definitely use him again for future projects.
Bespoke heating and cooling
Rating: 4.5 out of 5
Extension Builder in West Hampstead
Hello my name is Robbie, I am a qualified plumber and heating engineer, that’s also trained in electrics. I enjoy working out problems and helping customers come to the best resolution to their problems.
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Latest review:
Plumbing- 11 Apr 2026
Had my bathroom plumbing changed they did a very good job very happy with the results would recommend
ELB Construction services LTD
Rating: 5 out of 5
Extension Builder in West Hampstead
Established, respectable construction company which specialises in all aspects of building. we pride ourselves on giving clients a personal touch. Seeing you’re project through from getting planning permission to completing works to a hi spec finish. new builds loft conversions house extensions refurbishments Basements All type of general building undertaken
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Latest review:
Extensions- 23 Dec 2022
ELB Construction completed some major garden works for me and constructed a garden office. It was a big piece of work with a lot of earth moving, significant foundations and a lot of brickwork. The ELB team, specifically Jimmy the site manager, were fantastic, always giving me the right advice about things I was not knowledgeable about, always focussed on a quality finish and flexible when we had some challenges with our neighbours. The finish is great, communication was always open and honest and they were very competitively priced. My brother in law is in corporate construction and was specifically very impressed with the quality of the brickwork that Jimmy and the team produced. Thank you to the whole team!
Adam Favor
Rating: 4.8 out of 5
Extension Builder in West Hampstead
Our business was founded to offer clients the opportunity to bring a vision to life. As a design & build business we can take your dream home concept and turn it into reality. We will provide you with design plans for your projects and thorough project management. We also have the professional, experienced and quality tradesmen that are essential to complete the construction phase of the project.
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Latest review:
Plastering- 17 Jun 2024
Adam Favor and NOVA Design & Build are a nice bunch of guys and they are reliable/helpful. However, when it came to coving, architrave and flooring, acceptable standards were unfortunately not met. Other specialists had to be brought in to re-do around 20% of the job; namely certain sections of the cornice and door architrave. In the former, a few things were below standard including: 1) not joining the friezes in the correct places, 2) cutting inaccurately, 3) leaving gaps, 4) using silicon as a filler and adhesive. For the door architrave, the wood was misaligned and not glued/nailed properly. The flooring was not laid well because there are huge gaps at times; sometimes at 1 cm. Since the kitchen has been installed, it is too late to take up the floorboards again. The most dubious thing of all in this job was the quote received for decorating which was c. 15k for 47 m2. This included plastering repairs, but ultimately the job got done by someone else to a high standard at 7k.
Tawfik Werfalli
Rating: 5 out of 5
Extension Builder in West Hampstead
At Miko Construction, we specialise in high-quality residential refurbishments, extensions, and fit-outs. We’re a small, experienced team that takes pride in delivering well-crafted work with clear communication throughout. Whether it’s a full home renovation or a bespoke interior project, we bring a personal, hands-on approach from start to finish.
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Latest review:
Tawfik’s team was very professional and very knowledgeable, they done a great work including helping me with the design and understanding the process required to complete a project at this size, he completed the electrical work tested it and also included great ideas with the LED lights that made A beautiful design at the end, he also recommended a lot of subcontractors in the area are very competitive in their price and practically manage the project with me from inception to completion.
AIA BUILDING CONTRACTORS LTD
Rating: 5 out of 5
Extension Builder in West Hampstead
Our Family run business is built purely on word of mouth and on our reputation with genuine authenticated reviews available on our website. we take pride in all aspects of our work from home improvements inside and out, Bathroom Refurbishment, New Roofs, Painting and Decorating, Loft Conversion, Rear Extension, Velux windows, Roof Repair, Gutters and Drain pipes unbloking
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Latest review:
Bathroom Fitting- 25 Mar 2022
Fantastic job very pleased with my bathroom under the stair. Thank you Ben. Pamela Robinson
Rml plastering
Rating: 5 out of 5
Extension Builder in West Hampstead
-Loft conversion -Extension - Plastering - Painting - Carpenter
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Latest review:
Plastering- 20 Sep 2025
Great work, professional team and would definitely recommend
Building
Rating: 5 out of 5
Extension Builder in West Hampstead
Elysium utilities ltd Hi Thank you for checking in at my page here at Elysium utilities ltd We are a team of qualified tradespeople and between us we can do pretty much all work required in your home.
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Latest review:
Decking- 23 Jun 2019
Very nice guy. Did a really good job on cleaning down and repainting my decking. Would definitely recommend.
Ifa construction ltd
Rating: 5 out of 5
Extension Builder in West Hampstead
House extension, lofts conversion, house refurbished, and new build
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Latest review:
Restoration & Refurbishment- 2 Jul 2023
AJ was thorough, friendly and thought things through. I would recommend him.
Livinroom Developers Ltd
Rating: 5 out of 5
Extension Builder in West Hampstead
Our expertise lies in project management of loft conversion and kitchen extension which is carefully coordinated to ensure a seamless and integrated package service from start to finish. Our role is to be the single point of responsibility taking the burden off the client. This includes managing what are often complex building processes from inception through to completion and hand over.
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Latest review:
I recently completed the building of an orangery extension (with skylight) to my semi-detached townhouse in NW London. The extension was to be used as a new kitchen while the existing kitchen converted to a living room. I awarded the contract of building the extension to Anthony and I was pleasantly impressed with the quality of work delivered. Anthony Project Managed the entire process from beginning to end and ensured that all my expectations were surpassed. His hands-on attitude to every detail of the work was quite reassuring. I am glad to say that Anthony and his team are very good professionals and they delivered the project on time and within budget, even going over and beyond the original scope of works in order to ensure that all my latter requests were addressed appropriately.
fedora and sons
Rating: 4.4 out of 5
Extension Builder in West Hampstead
I have started working for myself in Europe for 10 years, came over to England with my family and have been working here for 11 years getting business from word of mouth. In my business I manage lots of sub contractors covering a wide range of trades which I have experience in too.
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Latest review:
Painting & Decorating- 24 Feb 2020
Quite literally the worst tradesman I have ever worked within 25 years as a property developer! He came and quoted to paint my house (a good price I must say), little did I know that this meant he would spray everything that he can see, not prepare the surfaces by sanding them down or protects things. This included door handles, hinges, radiators, alarms sensors, tiles and my own furniture and cooking utensils. First time I confronted him about this he said that we would clean everything, and we agreed to carry own. However, it became apparent that we was doing the same as previously discussed. have paid hi 66% of what was agreed, I quickly realised that the damaged he has caused was going to cost me far more and I told him to leave. The next day he turned up at my house with his wife demanding the balance which I refused to give him, they were both shouting outside my house, threatening to call the police. I eventually agreed to pay the 50% of what was left, just so that they would leave. However, even once he had confirmed writing his acceptance of this, he walks over to me and threatened me one final time, saying that he will take me to court etc, there is god and he will see to me! I advise to stay away from this person, better to pay a little more and work with professionals who don't agree with one thing and do another. He paints using a spray, which means you can not touch anything up and he quite literally paints everything he sees!!
Alpha Projects
Rating: 5 out of 5
Extension Builder in West Hampstead
I am a construction professional with a well-rounded background that spans from domestic refurbishments to super-prime residential projects. I began my career working on smaller projects such as bathroom and kitchen refurbishments, loft conversions, and house extensions, gaining hands-on experience in every stage of the build process. Over time, I progressed into managing and delivering high-end and luxury residential refurbishments, where precision, detail, and client expectations are at the highest level. My blend of architectural training and on-site experience allows me to approach projects with both design sensitivity and practical efficiency. I am skilled in budget management, construction programming with Powerproject, and the use of digital tools including Bluebeam, AutoCAD, and Revit to coordinate and deliver work to the highest standards. Whether working on a bespoke renovation or a large-scale development, I am committed to providing quality workmanship and a seamless client experience.
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Latest review:
We are absolutely thrilled with our recent kitchen renovation! The entire process, from start to finish, was incredibly smooth and efficient, issue that did arise were handled efficiently. The workmanship is truly top-notch, with every detail handled with precision and care. The team completed the project within an reasonable time frame and the quality of the final result has completely transformed our home. Thank you again to Umit and his team at Alpha Projects!

4.3

Top rated Extension Builders

Our Extension Builders in West Hampstead, are rated 4.3 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 Hampstead?

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 Hampstead 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 Hampstead who are available and interested can respond to your post.

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

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

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in West Hampstead 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 Hampstead extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your West Hampstead home extension project is likely to cost.

Find extension builders in West Hampstead with MyBuilder

Hiring the right extension builder in West Hampstead 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 Hampstead extension builders. Once your job is live, we’ll share it with home extension builders in West Hampstead who can express their interest.

Step 2: Compare different extension builders in West Hampstead

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

Step 3: Hire West Hampstead extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in West Hampstead, 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 Hampstead extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a West Hampstead extension builder before hiring?

Before hiring an extension builder in West Hampstead or extension building company in West Hampstead, 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 Hampstead?

An extension builder in West Hampstead 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 Hampstead 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 Hampstead?

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 Hampstead 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 Hampstead 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 Hampstead

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

Yes, many extension builders in West Hampstead 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 Hampstead handle everything from design to construction?

Many West Hampstead 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 Hampstead help with materials and finishes?

Yes, most extension builders in West Hampstead 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.