Extension builders in Chelsea

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.6 (20 reviews)

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Some of our top rated extension builders in Chelsea

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Milan
No reviews yet
Extension Builder in Chelsea
refurbishment part of the house or entire house
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Brent Property Services LTD
Rating: 5 out of 5
Extension Builder in Chelsea
We are a building and refurbishment company. We are not the type of team that we can do everything, in our team the plumber is plumber , electrician is not bricklayer as well, everyone is doing what they trained for. Works are insured, reference available. At request we provide gas safety certificate and electrical certificate.
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Latest review:
Restoration & Refurbishment- 18 Sep 2019
Work completed to a good standard. Thank you
A S Builders
Rating: 5 out of 5
Extension Builder in Chelsea
We are a family run business in construction industry since 1990, initially started by my father and now his sons have joined the business and looking to revitalised the business through the use of up-to-date technology. We undertake all types of building work through our team of skilled labour from a small job up to New Build. Our most recent job was conversion of a detached property to 7 HMO's.
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Latest review:
Extensions- 29 Apr 2026
Heera, Jagthar and team was my first personal experience with builders. Let me tell you, it was a pleasure to have them do our porch and other renovations in the house. They are so courteous, hard working and provided a great service. Firstly, I had a comprehensively written quote breaking down all of the steps required. Heera then ensured to keep me in the loop of any developments/any changes of plan required, outlining the reasons why and options, making it easy to understand and work together to completion. Their finish was to a high quality and they would always go the extra step to ensure this. I highly recommend AS Builders for any job and will definitely use them again in the future, and would recommend to my friends and family also. If you are considering them, grab a free quote and go from there... That's what I did! Thank you AS Builders for our renovations!
HWB construction
Rating: 5 out of 5
Extension Builder in Chelsea
Our executive team's come from diverse backgrounds such as design, engineering and management. Dedicated and focused, our vision has always been to be a dynamic and innovative organisation. The joint experience of our executive team is well over 20 years and provides us and our partners with a significant level of expertise which is applied to each project. HWB’s unique approach means we can be flexible and bespoke in all we do when delivering excellence in the construction industry.
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Latest review:
Extensions- 28 Oct 2018
We appointed HWB to carry out a full refurbishment on our house, this involved re-gutting the interior and building an extension and loft conversion plus some landscaping in the garden. We spoke to many builders but finally appointed HWB based on their previous projects and professionalism. Appointing builders for any work is always difficult however we are delighted that we went with HWB. Throughout the project they have demonstrated high levels of professionalism, were very organised and worked to very high standards. They were collaborative throughout the whole project and kept us informed at every stage. As the project developed there were some changes made and HWB were flexible and open to new instructions made by us, as well as giving us valuable advice. Farag, Ayoub and the HWB team were always available to answer any questions and provided us with constant feedback on progress as well as identify new solutions to aid the development. They have a great team of workers who work to a high standard and are supervised throughout the project. We made the right decision going with HWB Construction and have no hesitation in recommending them.
Renaldo Dungu
No reviews yet
Extension Builder in Chelsea
Hi , my name is Renaldo I’m a professional painter and decorator more than 3 years in industry I undertake big and small projects interior and exterior painting work, for more information please get in touch for a free quote .
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Embhad Construction Ltd
No reviews yet
Extension Builder in Chelsea
Dear Customers, We are a construction company based out of Tooting, London. We specialise in refurbishment and extension projects within Southwest London and the surrounding areas and would appreciate the opportunity to provide a quotation for your project. Our team has a wealth of experience and knowledge with carrying out complex and challenging projects for homeowners and corporate clients alike. We would like to schedule a telephone call to discuss your project in more details We look forward to hearing from you soon. Regards The Embhad Construction Team
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M.H Brickwork
Rating: 5 out of 5
Extension Builder in Chelsea
Welcome to M.H Brickwork. We are a family run business of skilled and qualified bricklayers who have over 30 years experience in all aspects of the bricklaying trade. We pride ourselves on the quality of all our work. You will find our pricing very competitive.
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Latest review:
Michael did a number of jobs for us including a front wall, small garden walls either side of the front path and restructuring the path to include front steps. Michael was reliable and able to give us ideas on what could be done. He is polite, his work is of a high standard and he approaches his work with real professionalism. We are very happy with his work and would recommend him.
BRI BASE Ltd
No reviews yet
Extension Builder in Chelsea
I'm Ahsan Chohan, from BRAND BOA construction, a UK-based construction estimation and building services company specializing in precision estimating worldwide. We provide expert construction quantity takeoffs, cost estimates, and comprehensive building services including building extensions, new builds, interior finishing, refurbishment, MEP (Mechanical, Electrical, Plumbing), masonry, and general construction work. What sets us apart is our commitment to precision estimating and deep understanding of the UK construction market. Whether you're planning extensions, new builds, refurbishments, or specialized construction projects, we deliver reliable solutions that prevent costly overruns and delays. Our team combines technical expertise with practical industry knowledge, ensuring every project meets the highest standards of safety, quality, and accuracy. We focus on building long-term partnerships with clients who value expertise, reliability, and results.
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Valiant Construction Ltd
Rating: 4.2 out of 5
Extension Builder in Chelsea
Free consultation to discuss the your requirements! Valiant Construction Ltd is a property development company that specialises in residential property development and undertaking various building works to construct extensions new builds and refurbishments
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Latest review:
Carpentry- 8 Sep 2021
excellent service door perfect and he cleaned up after him Would recommend
Bansal interiors
Rating: 5 out of 5
Extension Builder in Chelsea
Hi my name is Ranj, I have been designing, planning and installing interior/exterior solutions such as new kitchens, bathrooms, bedroom furniture, exterior surfaces, roofing etc. I also landscape design, plan and install I also have a fully skilled team who cover all types of general building maintenance including plasterer’s, plumbers (gas safe), electricians and labourers.
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Latest review:
Garden Maintenance- 10 Jul 2026
Ranj cleared my back garden, which was towering full of weeds/ nettles and our front drive. His is extremely good value for money. He removed all the garden waste too. I was so impressed with the work. Not one weed left behind. Everything was pristine. Excellent attention to detail. Super friendly service, super hard working and we were super pleased with how the back garden and front looked. Definitely recommend him.
D&B Tatar Limited
Rating: 4.9 out of 5
Extension Builder in Chelsea
I am a highly experienced and confident individual with many years of construction experience , I have started working in this career from being a groundworker to working private jobs I am open to any jobs , as I have covered and worked in many different sides of construction industry ‘D&B Tatar Limited ‘ We lay foundation structures that improve the aesthetic of a building by laying driveways, footpaths and kerbs Installation of drainage systems Artificial turf installation Garden decoration Carrying out de-vegetation Outdoor steps We carry everything by always paying attention to details , comprehensive planning and execution which leads to high quality finishes
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Latest review:
Guttering- 19 Dec 2024
Great job fixing the downpipe.
O.L.T.O CONSTRUCTION Ltd
Rating: 5 out of 5
Extension Builder in Chelsea
we are able to undertake any work that has to do with the interior and exterior of your home. Responsibly!
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Latest review:
They did an amazing job of our extension from initial quotation right the way through until project completion. Communicated very well and all of the team were respectful and hard working throughout each stage of the project. Would highly recommend!
In Out Constuct
Rating: 3 out of 5
Extension Builder in Chelsea
My company In Out Construct we are a professional building company which you the client can fully trust. We specialise in most building aspects such as : Refurbishments, Wall openings, structural steel installations, Loft conversions, removal of chimneys, kitchens, bathrooms installation, Kitchen extensions, painting decorating. We always aim to fulfill our customer needs, comply with all British Standard regulations and make sure all our work is of best standard, and complited on time.
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Latest review:
Kitchen Fitting- 16 Jul 2018
Very good work and completed on time. Highly recommended.
EME Construction
Rating: 5 out of 5
Extension Builder in Chelsea
Our company is all about flexibility, innovation and, above all, results. We excel in working as part of a collaborative team to develop, design, and construct each project and we ensure our clients participate in the process every step of the way – consulting on the design, and achieving their goals for cost, schedule and quality.
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Latest review:
Handyman- 11 Feb 2024
I am very pleased with the services as handyman and decorator by Mr.Onuzi. I found him him to be punctual. reliable, professional,and work of a high standard.I recommend him 100% and would not hesitate to use his services again.
ArchiBuild London Ltd
No reviews yet
Extension Builder in Chelsea
All kind of Building work including bespoke joinery, specialising on private property.
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Duo Builders Ltd
Rating: 5 out of 5
Extension Builder in Chelsea
Duo Builders offers customers a high end service for all domestic building works. Our highly qualified team undertake Design, Build and Maintenance works on residential property in London and the surrounding area. Our wide range of services allows our clients access to an efficient quality service.
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Latest review:
Conversions - General- 26 Dec 2021
Overall, Duo Builders is good and I would recommend for any build work. Pros: 1. Committed to work and informed when not coming on any particular day 2. Had manpower allowing to add more hands if needed 3. Reliable people and nice staff / Team of young members 4. Does and completes work that was planned and agreed Cons: 1. Job took a lot of time than estimated as it was not thoroughly thought how the earth would be moved 2. Very hard to hold off the owner, its important for the client to be stay connected and informed. 3. Bit messy and site gets put of shape than original

4.6

Top rated Extension Builders

Our Extension Builders in Chelsea, are rated 4.6 out of 5 based on 20 reviews from customers like you.

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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 Chelsea?

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

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

What are the hourly rates of extension builders in Chelsea?

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

Find extension builders in Chelsea with MyBuilder

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

Step 2: Compare different extension builders in Chelsea

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

Step 3: Hire Chelsea extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Chelsea, 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.

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

What to ask a Chelsea extension builder before hiring?

Before hiring an extension builder in Chelsea or extension building company in Chelsea, 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 Chelsea?

An extension builder in Chelsea 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 Chelsea 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 Chelsea?

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 Chelsea 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 Chelsea 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 Chelsea

Can an extension builder in Chelsea help with planning permission?

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

Many Chelsea 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 Chelsea help with materials and finishes?

Yes, most extension builders in Chelsea 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.