Extension Builders in Chelsea

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (19 reviews)

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Some of our top rated extension builders in Chelsea

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Building London
No reviews yet
Extension Builder in Chelsea
Building London is a specialist extension and conversion firm based in Wimbledon. Our unique focus is on helping you realise the best increase in property value while recycling and re-using materials wherever possible to keep costs down. We work with you at the design stage or with your existing designs, and promise you an excellent result with a well managed project. While we are new to MyBuilder, we have completed many extensions and conversions across London and have come together as one business after many years of partnership. We hope you will let us quote for your project and look forward to working with you.
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Primefix uk
No reviews yet
Extension Builder in Chelsea
PRIMEFIX Contractors LTD Reliable. Fast. Professional. At PRIMEFIX Contractors LTD, we help homeowners, landlords, and letting agents keep their properties in perfect condition — without delays, stress, or hidden costs. We understand how important it is to get jobs done quickly and properly the first time, especially when dealing with tenants or ongoing property maintenance. That’s why we focus on fast response, clear communication, and high-quality workmanship. Our Services: Emergency call-outs Handyman services Painting & decorating Plumbing Electrical works Door installation & repairs Kitchen fitting Bathroom refurbishment Full property renovation What You Get With Us: ✔ Fast and reliable service ✔ Fully insured professionals ✔ Clean and tidy workmanship ✔ Honest, transparent pricing ✔ Flexible availability (including urgent jobs) ✔ Trusted by landlords and letting agents We don’t just complete jobs — we build long-term relationships with our clients by delivering consistent quality and dependable service. Whether you need a quick repair or a full refurbishment, PRIMEFIX Contractors LTD is ready to take care of it.
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MC HandyMan
No reviews yet
Extension Builder in Chelsea
Hello, I'm Martin, and I've got hands-on experience in the construction industry ranging from general handywork, building works and lanscaping. I've most recently been building garden rooms, laying flooring, tiling, cladding. I can fit doors, hardware/ironmongery and kitchens and am constantly assembling furniture, painting and decorating for my interior designer partner who is redesigning our flat. Whilst I’m new to this platform, I have successfully completed numerous projects within the residential sector and within hospitality where I worked for a number of years - in cafes, wine bars, and restaurants. Whether it’s a full build, a home improvement project, or smaller handywork, I take pride in my problem-solving skills, attention to detail, and honesty. Don't hesitate to get in touch and let me know what I can help you with.
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RS Homes
Rating: 5 out of 5
Extension Builder in Chelsea
We offer an affordable and competitive service locally for: Landscaping, Gardening & Garden Maintenance, Decking, Restoration & Refurbishment, Extensions, Conversions - General, Loft Conversions. With over 15 years experience in the construction and landscaping industry you can rely on us to provide a professional, punctual and trustworthy service. No obligation quotations provided upon request.
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Latest review:
Landscaping- 3 Jun 2021
On our first meeting I felt comfortable and was glad of input from Robin. Agreed to a plan and only had to wait a few weeks before work could start. All preparations made to protect my drive before skip arrived. All work carried out in a very professional manner and team were very polite and friendly. Even though weather was against ground works they provided shelter so work could continue. I’ve been very pleased with their approach and can’t fault the outcome. Although met with a couple of delays on garden furniture, (nothing to do with Robin and his team, circumstances outside control)all other aspects of this job have met with my approval. Was apprehensive of having people in but can honestly say there have not been any issues and when the skip was removed within an hour, Robin was back on site to clear and wash down the drive. So looking as good as new. It’s been a pleasure having them on my property and will look at using their services again in the future should the need arise. Nothing too much bother. So my thanks to them all.
100years construction LTD
No reviews yet
Extension Builder in Chelsea
100years Construction Ltd “Where vision takes shape with quality that lasts” Lofts | Extensions | Roofing Full House Refurbishments Free Quotes Available
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Ktl building Ltd
New on MyBuilder
Extension Builder in Chelsea
We are a trusted roofing company specializing in loft coversond installation, repairs, replacements, and maintenance. Our goal is to deliver quality workmanship, reliable service, and lasting results for every customer.
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JERRY BUILDING LIMITED
No reviews yet
Extension Builder in Chelsea
Dynamic and highly experienced builder whit over 35 years in residential construction. Taking on variety of projects Lofts,Extensions, Renovations from concept to completion. Dedicated to quality in craftsmanship and delivering results to client expectations . Managing projects hands an. Fully insured whit public liability coverage. Reference from clients
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Arisha services ltd
Rating: 5 out of 5
Extension Builder in Chelsea
I am gas safe register by qualification, and undertake most of heating and plumbing jobs. Which can be megaflo, new installation of boilers and repairs. I have skills to lay any type of floorings. I have been in the trade over 6 years and take on extention, conversions of lofts, renovations, bathroom, kitchens, tilling, skimming, painting. I can do decking, polycarbonated sheets, glassfiber roofs, sheds, screeding, concreting. I would cover most of building work.
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Latest review:
Good manners and workmanship I will definitely use your services again Thanks Man
P&A Building&Decorating
Rating: 5 out of 5
Extension Builder in Chelsea
We offer a wide range of building and decorating solutions such as: Kitchens Bathrooms Plastering Roofing Flooring Painting Decorating Plumbing Including CORGI Gas Safety Electrics Including And NICEIC Certificate Extensions Loft Conversions. Warranty All Works Fully Guaranteed
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Latest review:
Piotr ( Peter) has been trustworthy, reliable and very good value for money from the moment he started working on my flat. His work has been completed fast, with accuracy, and always leaving the surrounding area clean and tidy. I recommend him to my friends and am happy to give more references if required.
L.Pepper Design & Build,
No reviews yet
Extension Builder in Chelsea
L.Pepper Design & Build is a small, dedicated building company specialising in high-quality residential renovations, extensions, loft conversions and bespoke new builds. We combine thoughtful design with skilled craftsmanship to bring your vision to life, ensuring every project is completed with attention to detail and clear communication throughout. From initial concepts to the final finish, we work closely with homeowners to create functional, beautiful spaces that add lasting value to your property. At L.Pepper Design & Build, we pride ourselves on reliability, transparency, and a commitment to delivering projects on time and within budget.
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MO Construction
No reviews yet
Extension Builder in Chelsea
SUITE 504, CUMBERLAND HOUSE, 80 SCRUBS LANE, LONDON, NW10 6RE AMO Construction Group Ltd is a lean, high-performance construction company delivering end-to-end building solutions with zero compromise on quality, safety, or timelines. With over 15 years of industry experience, we operate with a founder-led mindset, tight operational control, and a culture built around precision execution. We specialise in residential and commercial construction, structural works, refurbishments, and full-scale project delivery. Our approach goes beyond building — we orchestrate projects from concept to completion. Every job benefits from senior-level oversight, fast decision-making, clear communication, and a delivery pace that consistently outperforms traditional contractors. Clients work with us because we reduce friction, protect budgets, and deliver measurable value. We combine a small, agile team with big-project capability, maintaining relentless standards of workmanship and accountability on every site. Small team. Big output. That’s the AMO Construction standard
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ZS Property Maintenance Limited
No reviews yet
Extension Builder in Chelsea
At ZS PROPERTY MAINTENANCE LTD, we take pride in being a Safe Contractor accredited company with extensive experience working with housing associations throughout London. Our team of skilled operatives is fully DBS checked, ensuring a high level of trust and security in all our services. We supply all necessary products and materials to deliver meticulous and efficient results. Our comprehensive range of services includes waste removal, property refurbishment, locksmith services, end-of-tenancy cleaning, painting, kitchen fitting, windows and door installation, and house clearance. Whether you're updating a property, securing a home, or managing a move, we are committed to providing top-quality service tailored to meet your needs.
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Prime Plank Flooring
No reviews yet
Extension Builder in Chelsea
Prime Plank specializes in expert carpentry with a focus on wood floor installation. Combining skilled craftsmanship and attention to detail, we deliver high-quality flooring solutions using hardwood, engineered timber, and other wood materials. Follow our work and projects on Instagram @PrimePlankor contact us on primeplank at outlook com. Beyond flooring, we offer a range of carpentry services, from custom woodwork to repairs, ensuring durable and beautiful results. We are FireQual qualified for the installation of fire doors, guaranteeing safety and compliance on every project. Whether you need new floors, bespoke carpentry, or fire door installation, Prime Plank brings professionalism and precision to every job.
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SK Builders
Rating: 5 out of 5
Extension Builder in Chelsea
SK Builders : good quality, very reliable, fully insured, references available loads of jobs to view!
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Latest review:
Extensions- 30 Apr 2019
What can I say about Steve and his team. Being an ex builder and coming off a not so great experience of a loft extension was cautious in who we chose for our Kitchen extension. I chose SK Builders and their approach to our job was first class and we always had a say in how the job progressed. We had complete trust in Steve and he paid us back in spades. They worked bloody hard in the heat of last summer, always here and slogged their guts out. The work was to an excellent standard and everything was completed, ordered on time. Steve worked around our issues and helped us enormously when it came to the knock through and setting up the kitchen area for us. His team of electricians, carpenters, Paul the plumber and Simon the plasterer were first rate. And all lovely guys. Our job was outstanding and Steve and his team were thoughtful and respectful to our needs. Would easily recommend and have recommended Steve to many people asking who we used. Honestly we could not be happier with the job, which had no major issues at all. It flowed like clockwork. All and all SK Builders should be considered if you are thinking of taking this kind of project, you will not be disappointed with the results.
Vovk construction limited
No reviews yet
Extension Builder in Chelsea
Vovk Construction Limited is a reliable and professional construction company specialising in high-quality residential building services. We deliver a wide range of projects including home extensions, renovations, refurbishments, and general building work, tailored to meet each client’s needs. With a strong focus on workmanship, attention to detail, and customer satisfaction, we ensure every project is completed to the highest standards, on time and within budget. From initial planning to final finish, we provide a smooth and stress-free experience for our clients. At Vovk Construction Limited, we take pride in building lasting relationships through trust, transparency, and quality results.
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N&D Brickwork Construction
Rating: 5 out of 5
Extension Builder in Chelsea
Over 17 years experience doing all building work, building houses, extensions, garden walls and paving. Customer guarantee satisfaction
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Latest review:
Extensions- 1 Jul 2021
Great job done by Naim and his team. He expressed interest in the job as soon as I posted. If it hadn't been for some wet weather the job would have been completed much sooner in the timescale he quoted. There was one small issue some time after the job was completed. I only called Naim once and he arranged a day to come fix it. We're very pleased with the finish, we would give future work to him and also recommend him to friends & family.

4.2

Top rated Extension Builders

Our Extension Builders in Chelsea, are rated 4.2 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.