Extension Builders in Clapham

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (17 reviews)

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Some of our top rated extension builders in Clapham

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HOME DESIGN 4 YOU LTD
Rating: 4.8 out of 5
Extension Builder in Clapham
Working closely with our clients, Home Design 4 You provides a Single Point One-Stop, Innovative Architectural, Creative Interior - Bespoke Design, 3D Visualisation, Project management and Design & Build services for all types of residential development and Home Improvement projects.
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Latest review:
Extensions- 19 Jun 2016
Neno is a very warm-hearted and genuine person. He gives his 100% to the job. He is also very prompt when it comes to communication and is always available by phone/text/email. He has a vast experience and good technical know-how and produced excellent plans and drawings. His quotes were very reasonable and offer excellent value for your hard earned money. Having been his client, I am genuinely inclined to believe he is a person who would never "rip off" his clients. He is a man of his word and does what he says. However, Neno's honesty and confidence can be a bit blunt at times. He can be quite “direct” with his opinions and this may rub off some people the wrong way, e.g. your local Council Planning officer may be an a**hole, but if you "confront" him, he will definitely not make things any easier for you- nevertheless, Neno dealt with all the Council red tape and followed up the Planning Permission Application to its conclusion. We finally got permission for extending the property much less than what we had expected initially- apparently our local Council (Hillingdon) has its own set of Draconian conservative rules that we were unaware of- but we have postponed the actual project work due to a recent change in personal circumstances. Summary: Based on my personal experience, I would DEFINITELY RECOMMEND Neno as a bona fide Tradesman on MyBuilder.com.
Leonart Building Ltd
Rating: 5 out of 5
Extension Builder in Clapham
Leonart Design & Build is a London-based property design and construction company combining creativity, craftsmanship, and over 15 years of industry experience. Founded by a skilled builder and an interior designer, and supported by a dedicated team of expert tradespeople, Leonart delivers a complete design-to-build service tailored to each client’s needs. From full refurbishments to bespoke extensions and interiors, we turn ideas into beautifully built spaces — on time, on budget, and with care. Our goal is simple: to create exceptional homes while removing the stress and uncertainty that often come with renovations.
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Latest review:
Hard Flooring- 29 Dec 2018
Giuseppe and his team are top level professionals able to give qualified advice and real expertise. In renovating our art gallery, they showed real old-time mastery from the beginning. They not only helped us study the most suitable solutions for the features of our place both for the flooring and the walls painting, but also showed amazing precision and care in carrying out the whole renovation project by applying the renowned knowledge of Italian master masons. While other builders had cursorily told us that any laminate would be good, the one that Giuseppe and team suggested us was selected by considering both the resistance to the clomping and the desired aesthetic result. Also, they adopted all the special arrangements needed to prevent the wood floor from bulging and lifting. They suggested us the type and the colour for the skirting board, making the gallery even more refined. The works were terminated in the estimated time and the fantastic result in terms of elegance, sophistication and safety has been possible thanks to the reliability and attention to detail of Giuseppe and team. We were so satisfied that we decided to hire them for all the other works needed (ceiling painting, walls painting, positioning of the anti UV film in our windows, enforcement and lifting up of the electrical track for the lighting system). All these works were completed with mastery and are still contributing to fascinate all the visitors at the gallery!
Ndoci construction ltd
No reviews yet
Extension Builder in Clapham
We are a dedicated construction and renovation company delivering high-quality work across residential and commercial projects. From small repairs to full-scale builds, we handle every stage with precision, reliability, and attention to detail. Our goal is simple: to bring your vision to life on time, on budget, and to the highest standard.
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Calin Coroian
Rating: 5 out of 5
Extension Builder in Clapham
Hi,my name is Calin Coroian i m a General Builder, new and maintenance,i do all other aspects of building work with 20 years experience and passion on my work to make all my customers happy.I have a professional team of hard workers.I l will pleased to get you in touch with my previous customers. I look forward to hear from you. Many thanks.
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Latest review:
Plastering- 17 Jan 2017
Good fast worker. Nice guy.
Meyson Construction Ltd
No reviews yet
Extension Builder in Clapham
At Meyson we offer custom built renovations covering both the residential and commercial sectors. Our clients are at the heart of our business and everything is focused on doing the very best for them. We’ve had a long-standing belief that a project should be a pleasant experience for all. This ethos together with our quality, reliability and flexibility is why out clients trust us to deliver time after time.
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Tota Spark Ltd
Rating: 5 out of 5
Extension Builder in Clapham
Hi there.I have established this company because I like the work I do and the most important thing is that I want that every client to receive the best of service.I undertake electrical work and general building works.
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Latest review:
Electrical- 10 Sep 2019
Nice, trustworthy guy. Quick reply and on time. Will definitely call again next time I need an electrician.
A J Keating
Rating: 5 out of 5
Extension Builder in Clapham
Hello we are a family firm based in north London. With more than15 years experience doing mostly exterior work. We enjoy difficult jobs and like a problem to be solved. Retaining walls, drainage, foundations are our bread an butter.We pride ourselves on a great job at a fair price.
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Latest review:
Groundwork & Foundations- 30 Aug 2022
Axel & his team have done a huge amount of work for us through 2022. They started by building the foundations, and then also built the block walls and the structure for the roof. They also constructed an entire extra timber framed shed. After more than four months of working for me constantly I can say that I'm very happy with the quality and speed of Axel's work. He has worked through all the work we have given him, and all the extra issues that came up, with a pragmatic and competent approach. The site today is unrecognisable from when he arrived (he also removed several tonnes of soil for us etc), and I would hire him again without reservation.
Fast5 Limited
Rating: 5 out of 5
Extension Builder in Clapham
Are You Tired of Dealing with Builders? We Have the Solution! ✓ Honest and Transparent Pricing ✓ On-Time Project Completion ✓ One-Stop Shop for All Your Building Needs ✓ Residential and Commercial Construction Expert ✓ Health and Safety Compliant ✓ Regulatory Compliant ✓ Insured Don't let construction headaches ruin your home renovation dreams! Contact us today and experience the difference.
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Latest review:
I recently had the pleasure of working with Fast5 for the refurbishment and renovation of my house in London, and I couldn't be happier with the results. The team displayed a high level of professionalism, expertise, and attention to detail throughout the entire project. From the initial design phase to the physical construction, they demonstrated their commitment to customer satisfaction. The comprehensive range of services offered by them included architecture design, interior design, and physical construction, ensured that every aspect of my home renovation was handled with precision and completed to the highest standards. The team's expertise and experience were evident in their work.
AVOTERG Ltd
Rating: 5 out of 5
Extension Builder in Clapham
Our aim is to help clients achieve their objective on time and budget and to the highest standard. We value the good communication with the clients, and try to have as much information as possible with regards to how their project must look when completed.
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Latest review:
The job was a complete refurbishment of a one bed flat, including rewiring and re-plumbing. We would recommend Al and his team without any hesitation. From the very beginning and all the way to completion, we felt very lucky and fortunate to hire them. We found them to be very hardworking, conscientious and professional. The job was a difficult and complex one, but the team still completed within time and within budget. Al's advice made the whole process easier and we found him to be very trustworthy and honest. The end result was better than we originally hoped for and was done to a high standard.
PANZAJ Construction Ltd
No reviews yet
Extension Builder in Clapham
At the beginning the company operation has been focused on gardens structure, fencing and pavements. Due to demand highlited by regular clients in a few years later, Panzaj extended it's services by house extensions, loft conversions and general renovations. Since 2011 comprehensive, high-quality building and garden construction services have been offered by Panzaj in London and surrounding areas.
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h building and landscaping ltd
Rating: 4.9 out of 5
Extension Builder in Clapham
H Building & Landscaping has 20 years experience in all aspects of building. From Extensions, Refurbishments, Basements, All Garden landscaping, Patios,Driveways,Garden walls,Fencing,Turfing, kitchen & bathroom refits & much more. We pride ourselves in attention to detail & customer satisfaction. We are trustworthy & reliable with a great reputation! It would be our pleasure to assist you in all works needed, we will not be beaten on quality or price. H Building & Landscaping Ltd
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Latest review:
Extensions- 18 Nov 2020
Unfortunately, Stuart Helm did not even start the job let alone complete it! Each time Stuart Helm was supposed to start work on the porch, he contacted me with an excuse explaining why he couldn’t start the work. This occurred over several weeks and eventually, we mutually agreed he would not be doing the work and I would repost the job. Very disappointing and lots of time wasted.
Abdullah azouz.
Rating: 5 out of 5
Extension Builder in Clapham
I’m involved in residential property development. My role includes supporting construction projects, coordinating with teams, and helping ensure work is completed efficiently, on time, and within budget.”
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Latest review:
Bathroom Fitting- 23 Apr 2026
Rapid response and professional work.
2V Projects Ltd
No reviews yet
Extension Builder in Clapham
2VP - the design and build brand of 2V Projects Ltd, working across Fulham and south London. We take on whole projects rather than fragments: extensions, loft and garage conversions, full house refurbishments, kitchens, bathrooms, bespoke joinery and microcement finishes. One contract, one team, one point of responsibility. The difference is the system behind the work: - In-house quality control. A checker inspects the site independently of the people building it. - Daily site reports. You see what happened each day without having to ask. - Weekly invoicing tied to work actually completed. You pay for progress, not promises. - A live project dashboard. Real programme and cost position, available to you at any hour. - A standard book of quality that every subcontractor signs and is audited against. On price we are direct with you. We will rarely be the cheapest quote you receive. Low bids are won on optimism and recovered later through variations, which is why so many projects end up costing far more than the figure that persuaded the client to sign. We price the whole job at the start, including the parts most estimates quietly leave out. If you are still planning and want to understand what your project will genuinely cost, tell us the full scope - not just the extension, but the kitchen, the electrics, the bathroom, the decoration. One honest number now is worth more than a comfortable one you cannot rely on.
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KG DESIGN & BUILD LTD
Rating: 5 out of 5
Extension Builder in Clapham
Hi I`m Kleida .I worked in Building industry for a while now and I have built a quite a knowledge on extensions loft conversion and refurbishment . I recently decided to start working for myself .I also have a very good working team with various knowledge on various stages of projects .
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Latest review:
Conversions - General- 8 Oct 2025
Gaz and his team were professional and hard working, and clear about what would happen when. The job is now finished to a good standard, and on time.
BRI BASE Ltd
No reviews yet
Extension Builder in Clapham
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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Fola
No reviews yet
Extension Builder in Clapham
Hello I am skilled and quick worker I have I good teem and very polite
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4.1

Top rated Extension Builders

Our Extension Builders in Clapham, are rated 4.1 out of 5 based on 17 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 Clapham?

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

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

What are the hourly rates of extension builders in Clapham?

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

Find extension builders in Clapham with MyBuilder

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

Step 2: Compare different extension builders in Clapham

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

Step 3: Hire Clapham extension builders with confidence

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

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

What to ask a Clapham extension builder before hiring?

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

An extension builder in Clapham 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 Clapham 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 Clapham?

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 Clapham 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 Clapham 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 Clapham

Can an extension builder in Clapham help with planning permission?

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

Many Clapham 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 Clapham help with materials and finishes?

Yes, most extension builders in Clapham 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.