Extension builders in Chelsea

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.6 (19 reviews)

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Some of our top rated extension builders in Chelsea

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London Premium Builders
Rating: 4.3 out of 5
Extension Builder in Chelsea
London Premium Builders Ltd Covering London & Essex With 15+ years of experience, our expert team delivers top-quality work across all types of building and renovation projects. ✨ Our Services Include: Kitchens • Bathrooms • Roofing • Flooring • Painting • Extensions • Loft Conversions • Brickwork • Fencing • Driveways • Damp Proofing • Plastering • Tiling • And More! ✅ Free Estimates ✅ All Our Work Is Guaranteed 📍 Based in London & Essex 📞 Contact us today for your free quote!
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Latest review:
Restoration & Refurbishment- 5 Jun 2026
This builder is not honest; he didn't do the work to live up to his verbal commitment to quality. He refused to include the electrical work he had done on the invoice because he did not want to issue an electrical safety certificate. He is not a professional, and we argued 2-3 times about not doing the quality work and left work, giving unethical reasons. His work laying garden slabs was of poor quality; the slabs were moving when walked on. I asked him to do it again, which he said he did, but still he left the slabs moving while walking. I am thinking of legal action against him. I will not recommend him to anyone. PLEASE AVOID HIM GIVING ANY JOB IN YOUR BEST INTEREST.
Altus Construction Ltd.
No reviews yet
Extension Builder in Chelsea
Professional building contractor and master craftsmen, undertaking bespoke, high end project from small to medium in scale for both domestic and commercial clients.
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MMDesigns
No reviews yet
Extension Builder in Chelsea
ARB/RIBA Chartered Architect with 7 years of experience in residential and educational projects from small to medium-sized. All projects have been UK based on meeting all the building regulations and other relevant standards. It's been amazing to work with private clients as well as local authorities and housing developers. Feel free to contact me if you have any questions or projects that need looking over.
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Landscaping
No reviews yet
Extension Builder in Chelsea
Daniel Landscaping
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Dan’s Team Projects Ltd
No reviews yet
Extension Builder in Chelsea
25 y of experience in building sector. Working as a multi trade person for companies now set up own . Always good communication and problem solving.
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hrs build ltd
No reviews yet
Extension Builder in Chelsea
We are specialize company for interior and exterior ,extension refurbish painting and decoration chimney removal roof construction loft conversions .
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NORTH STAR BUILDING SOLUTIONS LIMITED
Rating: 5 out of 5
Extension Builder in Chelsea
Established in 2010 Northstar Building Solutions are a highly successful building company specializing in exceptional residential projects. As well as covering all aspects of new build and can deliver technical expertise to the latest building designs. We pride ourselves in completing a variety of projects including affordable and high specification housing, energy centres, hotels, restaurants, community centres and a church; we are experts at Extensions, Conversions.
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Latest review:
Extensions- 2 Jan 2023
Excellent work overall. Builders were very professional, hardworking and friendly. Work was completed to a high standard and we were given updates throughout the entire process. Leo and his team were very responsive and resolved issues very quickly. Will 100% use North Star again for future work.
Rayan and Kevin brickwork
Rating: 4 out of 5
Extension Builder in Chelsea
We do extensions , lofts conversions , roofing . gardening, rendering.and much more we have more than 20 years experience .
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Latest review:
Bricklaying- 25 Aug 2024
AVOID. Ernie incorrectly installed my drains under my house which has caused awful smells and sewage to leak under my house causing long term damage to my foundations Three professional drainage company’s have put a camera to see a Dropped pipe from new to old house. They have identified a connection that was never appropriate. Unfortunately, Ernie after being given many opportunities does not accept any responsibility. He is not an expert at all trades so be careful. I’ve asked him to help put right by exposing the floor which has Underfloor Heating. This has now cost me tens of £000s. My fault for not using a professional team at the beginning of my project.
Artful And Arches Ltd
No reviews yet
Extension Builder in Chelsea
Welcome to Artful and Arches. A construction and design company run by the perfect duo team; a husband, Nazim (builder) and wife, Clara (designer). We operate in North London. We specialise in prepping kitchens (removal, electrics, plumbing, plastering, lighting, flooring, decorating etc), kitchen designs and sourcing (Kitchen, worktop and appliances). We handle the full project from A-Z relieveing you of the stress involved, or we can cover partial parts of the project. Everything you see on our portfolio was designed by us and had our involvement with the project. Our team is small and shall stay this way to ensure full works are completed to the highest standards by our reliable builders. Clara overlooks, manages and co-ordinates all projects. Communication is key and hard to find in our industry. Our average kitchen order is around £25k-£35k (including worktop, fitting and appliances) with associated building works starting from £12k+Vat (subject to involvement). Kindly read our reviews on TrustPilot.
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Bardy construction ltd
No reviews yet
Extension Builder in Chelsea
IBardy Construction Ltd, a skilled team of building and home improvement specialists with over 10 years of experience in the trade. We handle all types of home renovations, including loft and basement conversions, room extensions and kitchen and bathroom remodelling. Our goal is to provide a high-quality, affordable service that exceeds our clients’ expectations every time.
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LONDON LIFE SPACE LTD
No reviews yet
Extension Builder in Chelsea
At London Life Space, we bring over 15 years of experience to every project, with a proven track record of excellence across the construction industry. With over £20 million worth of completed projects, including more than 100 flats and numerous extensions and loft conversions, we are trusted to deliver high-quality, efficient, and cost-effective solutions for residential and commercial clients alike. No project is too small - whether you're looking to expand your home with a loft conversion or undertake a large-scale development, we treat every project with the same dedication and attention to detail. Our focus is on precision, speed, and top-tier craftsmanship. We work closely with our clients to ensure their vision comes to life, on time and within budget. At London Life Space, we don’t just build structures - we create spaces that enhance lives.
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Darko
No reviews yet
Extension Builder in Chelsea
I’m a skilled handyman, carpenter, and joiner with extensive experience in flooring and tiling. Known for building strong rapport with clients, I bring meticulous attention to detail and a deep respect for others’ time. I take pride in every project I undertake, consistently applying my knowledge and refining my craft throughout the week. Reliable, precise, and passionate about quality workmanship.
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PERRIN HOMES LTD
No reviews yet
Extension Builder in Chelsea
Perrin Homes is a Kiwi owned and operated building company. We aim to bring the Kiwi know how and can do attitude to all the building work we complete in London and surrounding areas. Our area of expertise covers lofts, extensions and full renovations.
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I&B CONSTRUCTION SERVICES LIMITED
No reviews yet
Extension Builder in Chelsea
I&B Construction Services Ldt is a Mitcham-based family run company with more than 25 years of experience in the Construction industry. Due to our great workload capacity, we can easily run several construction projects simultaneously while doing 60nr bathroom renovations per month for local authorities in the South London area. Our infrastructure and experience in house refurbishments and new builds, allow us to provide our clients with a complete, hassle-free specialist service.
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Taylor Nichols
Rating: 5 out of 5
Extension Builder in Chelsea
Taylor Nichols will help you with all general building services we specialise in groundwork’s such as footings,drainage,concreting,landscaping and trenching.
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Latest review:
Groundwork & Foundations- 21 Jan 2023
Came on a Saturday at 7 in the morning in 0 degree weather to sort out my rainwater gullies. Managed to rod and clear them in the space of a few hours whereas I had had a number of chancers quoting bonkers amounts to redo the whole system. Knows what he’s about, is on time, and professional. Would recommend to anyone.
ADM TILING LIMITED
Rating: 5 out of 5
Extension Builder in Chelsea
ADM Tiling Limited – Precision Tiling That Transforms Spaces Since 2017, ADM Tiling Limited has been the go-to choice for flawless wall and floor tiling across North London and beyond. Based in Enfield, we specialise in high-quality installations using ceramic, porcelain, natural stone, and mosaic tiles—delivering stunning results for bathrooms, kitchens, hallways, and residential/commercial projects alike. What sets us apart? Uncompromising attention to detail, meticulous preparation, perfect levelling, and finishes that look as good in year 10 as they do on day one. Our micro-company ethos means personal service, no subcontractors, and a genuine passion for turning your vision into tile-perfect reality. From modern minimalist designs to classic heritage restorations, ADM Tiling brings craftsmanship you can trust—every cut, every grout line, every project completed with pride. Elevate your space. Choose ADM Tiling. 📍 Enfield, London Company No. 11105194 | Active & Compliant
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Latest review:
Tiling- 12 Dec 2018
Great team of guys, very hard workers completed the job to a high standard and in the time frame given Highly recommended!

4.6

Top rated Extension Builders

Our Extension Builders in Chelsea, are rated 4.6 out of 5 based on 19 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 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.