Extension Builders in West Hampstead

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (18 reviews)

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

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 Hampstead

3537 Results

Sort by:

M&V Fusion LTD
Rating: 5 out of 5
Extension Builder in West Hampstead
Jobs at high standard finish . Fast and reliable .
Get in touch
Latest review:
Electrical- 22 Sep 2018
Valentin was fantastic. He was efficient and professional. He did a fantastic job and even cleaned up after the job. He was polite, friendly and knew exactly what he was doing. I will definitely be getting more work done by him and have even sent him to my parents house today after finishing my job, to get quotes for other work. Thank you for helping me out today. Much appreciated
TCTSERV LTD
Rating: 5 out of 5
Extension Builder in West Hampstead
Hard working, honest and reliable builder team, with over 18 years experience in property refurbishment. Proud of our work, we always try to exceed customer expectations. We deliver top quality services that our customers can rely on - at affordable prices. Free estimates. CALL Tache TODAY!
Get in touch
Latest review:
Carpentry- 12 Nov 2017
Tony is a very professional tradesman. He was punctual and completed the job satisfactory within the recommended time line. I will be using Tony again and recommend him to family and friends.
Rapid Response Contractors
Rating: 5 out of 5
Extension Builder in West Hampstead
We are a family run business. No job is too big or too small for us. I have been in the building trade from a early age, and qualified in gas and electrical engineering. My wife handles all admin and material orders for the company whilst im hands on with my team of workers.
Get in touch
Latest review:
Extensions- 27 Jun 2018
Rapid Response completed a single storey kitchen and bathroom extension for us, as well as refurbishing our existing bathroom and doing a complete rewiring for the whole house. Sheraz and his team were very friendly and a real pleasure to deal with, and their attention to detail and customer service was excellent throughout the whole process. They talked us through each stage step by step, giving us a range of options as well as providing advice on what would work well. Even at the end of the project they asked if we had any little tweaks or finishing touches and wanted to make sure we were happy with everything, which was incredibly helpful. The prices were very reasonable and we are very pleased with the final finished work. We would highly recommend Rapid Response and will definitely be using them again in future. Many thanks!
SM Refurbishment Ltd.
Rating: 5 out of 5
Extension Builder in West Hampstead
SM REFURBISHMENT LTD. is a well established company that has been in business for over 10 years and provides a comprehensive suite of building services. Our carefully selected team have a broad range of experience. If you are looking to extend, convert, refurbish or redecorate your property, we are here to assist you all the way from concept to completion offering individually tailored services. We are also specialists in carpentry and joinery projects as well as kitchen and bathroom refurbishment. We are FENSA accredited windows and doors installers.
Get in touch
Latest review:
Restoration & Refurbishment- 21 Nov 2023
Slawek and Andrew did an amazing job on the front and side of our terraced house. The quote was fair (and they stuck to it) and the attention to detail was refreshing. We were kept informed throughout the works - communication was excellent. I whole-heartedly recommend SM Refurbishment.
AP General Builders
Rating: 5 out of 5
Extension Builder in West Hampstead
Our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. As a result, a high percentage of our business is from repeat customers and referrals. I would be more than happy to showcase the high quality of work I/we pride our self in and would welcome the opportunity to earn your trust and deliver you the best service in the industry.
Get in touch
Latest review:
Extensions- 5 Sep 2019
The builders did an incredible job refurbishing my house. For my house I wanted to break the internal wall to create a bigger living room and also for them to refurbish the toilet. In the beginning they’ve set a period when everything will be done and they’ve stuck to it so they are trustworthy. Seeing the progress, I could definitely tell that they were working incredibly hard and I know that they have been working long hours to ensure that they manage to finish it within the timeframe that they’ve set. I would definitely recommend them.
T&S Electrical And Property Services Ltd
Rating: 5 out of 5
Extension Builder in West Hampstead
WE ARE AN ELECTRICAL & HOME IMPROVEMENT COMPANY WORKING THROUGHOUT GREATER LONDON, PROVIDING SERVICES TO PROUD HOMEOWNERS IN THE LOCAL AREA.
Get in touch
Latest review:
Electrical- 27 Jan 2026
Taf was great, I wish I had gone to him and not to openrent as I initially did for my Eicr and essential works! Big recommend!
Spring Construction Solutions Ltd
Rating: 5 out of 5
Extension Builder in West Hampstead
We undertake all aspects of residential and commercial building projects with regard to refurbishment and extensions. We have 45 years experience in the building trade and also working with architects and surveyors as well as managing our own projects.
Get in touch
Latest review:
Restoration & Refurbishment- 25 Feb 2020
Malcolm and his team did great work on my house. The job consisted of full house redecoration, building bespoke shelving and built in wardrobes, loft boarding and installing ladder, replacing fencing and general pruning in the garden. They were able to turn their hands to all manner of jobs. Malcolm had a full team onsite every day and they finished the work ahead of schedule. At all times Malcolm was very responsive and worked hard to ensure that any changes along the way were accommodated. I would happily recommend Spring Construction and would not hesitate to use them again in the future.
SSS Brothers Limited
Rating: 5 out of 5
Extension Builder in West Hampstead
At SSS Brothers we value our customers and work very hard to maintain their trust.With 15 years of experience,You can be assured that we will always provide quality workmanship, professional,courteous and timely service. Our prices are competitive, and our work is guaranteed. We will not be satisfied until you are! What We love most about renovating homes is working with our clients to create something spectacular.Every job comes with new challenges and opportunities to build something special.
Get in touch
Latest review:
Extensions- 26 Aug 2021
SSS BROTHER, They worked incredibly hard to transform our house in a timely and efficient manner, all whilst being responsive to our concerns and preferences. The SSS BROTHER did a great job extending our kitchen and backroom to create a beautiful space that we love hosting family and friends in. The job was completed to a high standard and with good communication. Throughout the work, the workers were calm and knowledgeable and - importantly for us - helpful and offered their opinion of how the extension should be built.
P&T Property renovation LTD
Rating: 5 out of 5
Extension Builder in West Hampstead
LND Development ltd was established by a Polish builder. As a business we pride ourselves to provide a very experienced, hard working, friendly and loyal workforce. We provide a professional and experienced service at very competitive rates.
Get in touch
Latest review:
Pawel and the team did a fantastic job. The bathroom looks superb and the whole team took time to finish the job to a very high standard. There was a narrow timeframe in which to do the work and this was met (despite more effort than first thought with respect to strengthening the floor). Pawel was easy to deal with and contacted me after the job to ensure everything ok. Highly recommended.
Florin
Rating: 5 out of 5
Extension Builder in West Hampstead
I’ve got over 10 years experience in roofing industry,I’m a professional person,I’m not doing tipe of work that I never done it before,I don’t leave any jobs unfinished.I have done several roofing jobs for different companies base in London.
Get in touch
Latest review:
Roofing (Pitched)- 29 Nov 2022
Florin and his team did a very good job fitting a skylight and rubber roof. Communication was very good and the standard of workmanship and overall finish were excellent. I would strongly recommend him
Landi Builders Ltd Uk
Rating: 5 out of 5
Extension Builder in West Hampstead
I am a professional, reliable, and hardworking builder dedicated to delivering high-quality workmanship and excellent customer service on every project I undertake. I take great pride in my work and always aim to complete every job to a high standard, ensuring that my customers are fully satisfied with the finished result. I understand that choosing a builder is an important decision, and I always strive to provide a service that is trustworthy, professional, and stress-free from start to finish. My approach to building work is simple: be reliable, communicate clearly, work safely, and deliver quality results. I believe that professionalism is just as important as workmanship. Turning up on time, being respectful of a customer’s property, keeping the work area tidy, and maintaining clear communication throughout a project are all essential parts of the service I provide. I treat every job, large or small, with the same level of care, attention, and commitment. I have experience in a wide range of building and property improvement work, including general building, repairs, maintenance, renovations, interior improvements, exterior work, and property upgrades.I am happy to take on both small jobs and larger projects.
Get in touch
Latest review:
Kitchen Fitting- 8 May 2026
Keri did an excellent job in fixing our cooker extractor pipe. Easy to talk to, nice approach and work in a timely manner. If we need them again for our home, will definitely contact them again.
Alban's A Team Solution
Rating: 5 out of 5
Extension Builder in West Hampstead
Hi my name is Alban I am a builder. I am honest and hardworking person. I have 18 years experience on general building trade. I undertake all building work, new build houses, new extensions, loft conversion. We also do all refurbishment interior and exterior. All structure and good knowledge of architectural plans.
Get in touch
Latest review:
Carpentry- 20 Oct 2017
nice guy, good comms, very good cartentry
Anjelina
Rating: 5 out of 5
Extension Builder in West Hampstead
Hello, my name is Krasimir Dimitrov i am a tradesman, i deal with loft conversions, demolitions, new builds, extensions. I have been in the trade for over 10 years.
Get in touch
Latest review:
Demolition- 17 May 2025
The team was great They did everything as they promised The job was finished on time Thanks for the help, it was much appreciated.
Corneliu Cauneac
Rating: 5 out of 5
Extension Builder in West Hampstead
I am experienced, hard working and forward thinking. I do not spread myself thinly and ALWAYS finish a project promptly once started. I pay close attention to detail and discuss all aspects of the job with my clients prior to starting to make sure we are always on the same page.
Get in touch
Latest review:
Corneliu undertakes tiling work for me. He is a good worker and he makes a perfect job. He has worked for me for over a year. I am very happy with his work and only use him. I would recommend him very much.
LLC projects limited
Rating: 5 out of 5
Extension Builder in West Hampstead
At LLC PROJECTS LTD, we deliver high-quality building and renovation services across London, Surrey, and Hampshire. With over 16 years of experience in the construction industry, our team specialises in all aspects of building works, maintenance, and plumbing — from full refurbishments and extensions to kitchen and bathroom installations. We pride ourselves on excellent workmanship, attention to detail, and reliable project management from start to finish. Most of our work is carried out in-house to ensure consistent quality and high standards. Whether it’s a small repair or a large-scale project, we approach every job with professionalism, transparency, and care. Contact us today to discuss your next project and see how we can bring your vision to life
Get in touch
Latest review:
I recently hired LLC Projects Limited to refurbish my ground floor and add a new bathroom, and I couldn’t be happier with the results. From start to finish, the team was professional, reliable, and truly cared about delivering quality work. The new bathroom looks amazing, and the ground floor transformation exceeded my expectations. Communication was great throughout, and they kept everything on track and tidy. The crew was friendly, and they handled any concerns I had quickly. I’d definitely recommend LLC Projects Limited for any home improvement work—they’ve earned my trust, and I’ll be calling them again for future projects
Rose Projects
Rating: 5 out of 5
Extension Builder in West Hampstead
At Rose Projects we build to your lifestyle, A family run business with a fresh approach covering all aspects of Construction. Craftsmanship is our main focus always maintaining high standards. We work along side Architects, Engineers and Designers We have an organised team of qualified tradesmen which take pride in there work with projects completed on time and budget. References available upon request, Come and see previous projects for ideas.
Get in touch
Latest review:
Extensions- 26 Sep 2022
Excellent work with the garden office/gym. Finished really nicely and exactly what we were looking for. Took quite a while but well worth the wait. We requested a labour quote and worked with Alf on a receipts basis for material and other costs. This worked out perfectly for us both. Alf's initial estimate of the materials cost was virtually spot on, which is very impressive given the inflation rate for building materials. Thanks again for all your hard work!

4.1

Top rated Extension Builders

Our Extension Builders in West Hampstead, are rated 4.1 out of 5 based on 18 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 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.