Extension builders in Barnes

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 Barnes

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EG Construction
Rating: 5 out of 5
Extension Builder in Barnes
Creating high-quality construction work, we specialize in high-end refurbishments and extensions, covering both internal and external work, in and around London. Building upon over 30 years of experience, we aim to provide unrivalled quality at a competitive price.
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Latest review:
Restoration & Refurbishment- 3 Jun 2021
Enrico pulled in a great team to refurbish my bathroom. It wasn't a straighforward suite swap out as I added a window, switched from an electric to plumbed shower, properly plumbed in the sink and changed the orientation of the shower and bath. Enrico took all of the stress out of ordering and receiving all the different elements, he added in some great suggestions of final touches and kept close to all aspects of the project until I was fully satisfied with clear timings and payment plan etc. on top. It's an old house and there were curve balls from time to time but Enrico and the team took them in their stride and made it a great experience. I'm totally thrilled with the end result.
IDEAL Carpenters LTD
Rating: 4.8 out of 5
Extension Builder in Barnes
Hello I am a skilled carpenter, with over 23 years experience working in and around London, I can undertake most all jobs concerning building works around the Home but also have a team of reliable sub trades including “Gas Safe engineers” and qualified electricians, If you need any work done, by some one you can trust and rely on then please don’t hesitate to short list me, for your next project, Regards Agron
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Latest review:
Conversions - General- 17 Oct 2026
Argon is a very nice and helpful person, he has converted our 3 bedroom fire damaged bungalow into a 6 six bedroom, loft coveted bungalow. What he gave us in the end was definitely a 5 star building but the journey was stressful, some of his sub contracts left a lot to be desired Would I use him again? A BIG YES But I would definitely Spec the job better down to the last screw and get him to price it all as we did have some disagreements over what was in or out of the quote and be on site more to push it on and so as we did not run over the date given for completion These are most of the reasons I have given 4 not 5 stars At one point he did admit this was the biggest project he had ever undertaken, so you can understand not getting a perfect 5 the first time But I say again the bungalow finished up as a 5 star It was the journey that let it down slightly Thank you again Argon for all the help before, though and after the project
Metalia Construction LTD
Rating: 5 out of 5
Extension Builder in Barnes
Welcome to Metalia Construction As a family-run business, we provide a personal service which differs from the large corporate companies. We have 12 years’ experience in the building industry. We pride ourselves on an excellent standard of work. We Offer all domestic construction work in general ,small job or big job !
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Latest review:
Landscaping- 31 May 2026
All completed satisfactorily
Bolshoi Developments Ltd
Rating: 5 out of 5
Extension Builder in Barnes
Company specialized in the residential space going from rear extension and loft conversions to full refurbishments and new builds
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Latest review:
Plumbing- 18 Dec 2021
Thomas' team was amazing. They found the leak and repaired the roof perfectly. We are happy with the work accomplished. For our next loft extension we will hire them again.
Convert Extend UK Limited
Rating: 5 out of 5
Extension Builder in Barnes
We at Convert-Extend offer a full package from plans, planning permission, building control and a fully managed build to ensure customer satisfaction We have over the past 30 years worked for local surveyors, estate agents and happy home owners that would happily provide references As you can see from our portfolio we are capable builders groundworks and home quality builders with many years experience
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Latest review:
At last I have found a company I can trust Steve and he’s team we’re very easy to deal with throughout the whole process the planning and finish was exemplary guided me through the whole process my son has a amazing space to live in very happy would highly recommend Keith Warner
Delta Construction Limited UK
Rating: 5 out of 5
Extension Builder in Barnes
We are commited to our clients. We have experience in working with bespoke clientele and are very confident in our capabilities, expertise and delivery of final product as well as after care.
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Latest review:
Decking- 23 Apr 2025
I needed someone reliable and efficient. Artan responded quickly to messages, was very polite, hard working and cleaned the area after the job. Stress free experience for me which was fantastic. Would recommend and definitely hire again. Thank you so much Artan!
LUCID BUILDING LTD
Rating: 4.5 out of 5
Extension Builder in Barnes
We at Alder Tree Construction LTD are a specialists high-end London based construction company. We love what we do and pride ourselves on our work methods and exacting standards. Every project we take on receives special attention and we are heavily invested in the delivery process. A dedicated Team is assigned to each and every project so a personal service is always guaranteed. Our success is based on our honest approach.
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Latest review:
Handyman- 14 May 2018
I had an issue with one of my lights. Pawel came on time and was very helpful, polite and efficient. He did the job quicker than expected and also followed up the following day. I would highly recommend.
DC Brickwork
Rating: 5 out of 5
Extension Builder in Barnes
Dear Customers I am honest trustworthy reliable and hardworking and I have over 25 years experience in the industry.
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Latest review:
Bricklaying- 29 Jun 2017
I would recommend Damian. Did a good job, good communication and was on site when he said he would be. Polite and friendly. I would be happy to use again.
BM TILING
Rating: 5 out of 5
Extension Builder in Barnes
Build & Renovate BM is offering free estimates and the best ideas on any project you aim to achieve. We are happy to assist you by sharing our experience in delivering a great finished project in detail. Perfect finish at the right price; No stress on the journey. Fully insured. Work warrants. Kind Regards Byli on behalf Build & Renovate BM
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Latest review:
Tiling- 4 May 2026
Really great experiences tiler restored our original floor.
Bellamont Consultancy Ltd
Rating: 3 out of 5
Extension Builder in Barnes
Welcome to Bellamont Consultancy Ltd Where quality craftsmanship meets reliable service, As a medium sized building company, we specialize in delivering projects that combine technical expertise, attention to detail and a commitment to customer satisfaction. Our team brings together skilled tradespeople, experienced project managers and innovative designers to handle a diverse range of construction needs, from residential homes to small commercial buildings and renovations. We pride ourselves on building strong relationships with clients, partners and the communities we serve Every project big or small receives our full dedication and commitment to quality standards. Our clients appreciate our hands on approach and transparent communication, ensuring a smooth and collaborative building experience At Bellamont Consultancy Ltd we are passionate about turning visions into solid structures, on time within budget and to the highest standards
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Latest review:
Carpentry- 30 Sep 2025
Wall panelling installed on time and on budget. Great job.
LH Builders & Plumbers
Rating: 5 out of 5
Extension Builder in Barnes
Hi we do all building works been in the business for 25 years we are a family run business.all our tradesmen are fully qualified.we aim to please our customers as word of mouth is essential to us No job to small. We also do camera drain inspections and leak detection with thermal imaging. Leah is our assistant and replies to emails and sends us the job leads while we are working
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Latest review:
Plumbing- 4 Aug 2026
Gareth arrived early, identified the issue and was really prompt in fixing it. He was very clear in explaining what the issue was and showing me how he fixed it. We also had another issue in the bathroom and he was able to identify it and give tips on how to manage it in the future. I would definitely recommend him and have saved his number in case of the need for future work. His also provides guarantees for his work which gave me alot of peace of mind. Thanks again!
London Refurbishment & Construction LTD
Rating: 5 out of 5
Extension Builder in Barnes
We are a friendly family business and we cover all aspects of the building trade. We have been trading for over 15 years in the Domestic Building trade. We undertake all large or small works so if you would like some professional advice just call, text, or email us. We carry out all the works on the domestic house: -Kitchens -Bathrooms -Plastering -Electrical -Plumbing -Painting & Decorating -Floors -Extensions -Loft Call now for free estimates and friendly advice.
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Latest review:
What can I say about Christian and his father - Nicolas. They did an absolutely amazing job in our home. From the moment I spoke to him about the work to be done I knew I would hire him. He was professional from start to finish and did a stellar job on splitting a room into two and creating a hallway. Very pleased with every part of the work done and will most certainly use him again. Highly recommend.
2AM Construction
Rating: 4.6 out of 5
Extension Builder in Barnes
Hi this is Ali I am electrical contractors with over 10 years of experience who covers all types of electrical work. I do both domestic and commercial installations, rewiring, fault finding, repairing, fire alarms, smoke alarms, emergency lighting, EICR Certificate
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Latest review:
Electrical- 3 Oct 2025
went very well - almost superb, maybe of 5 stars 4.9.
Property DMR Services Ltd
Rating: 5 out of 5
Extension Builder in Barnes
Property DMR Services Ltd is a high end building company that specialises in refurbishing high end properties in and around London. All our work is insured & guaranteed. We undertake Basement Construction & Waterproofing, Extensions, Loft Conversions & Renovation, Decorating and wallpapering plus Bespoke Joinery & Shop Fitting
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Latest review:
Restoration & Refurbishment- 12 Sep 2024
From the first impression, throughout the early stage discussions and right up to the end - Matthew was consistently punctual, fair, thorough and reliable. Excellent execution of jobs and flat was left tidier than before. Would not hesitate in hiring him again or recommending.
Crown builders & landscaping
Rating: 5 out of 5
Extension Builder in Barnes
Crown Builders and Landscaping are new to this platform: please check out our reviews on yell: we have a positive reputation, with several positive reviews on yell and other platforms highlighting their work in paving, driveways, and landscaping. reviews mention efficient service, good communication, and high-quality work, particularly in all aspects of roof repair and maintenance and new driveways and garden transformations.our punctuality, cleanliness, and reasonable pricing is our main goal and always try to achieve 100% customer satisfaction
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Latest review:
Groundwork & Foundations- 10 Oct 2026
Hes a good builder and professional afinish
K.M Home Construction
Rating: 5 out of 5
Extension Builder in Barnes
Our company deals with construction and renovation. We are professional. We ensure a high standard of our work, we keep the agreed deadlines.
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Latest review:
Bathroom Fitting- 11 Oct 2023
He was very professional and has completed the work as desired.

4.6

Top rated Extension Builders

Our Extension Builders in Barnes, are rated 4.6 out of 5 based on 19 reviews from customers like you.

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What types of services are offered by local extension builders in Barnes?

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

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

What are the hourly rates of extension builders in Barnes?

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

Find extension builders in Barnes with MyBuilder

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

Step 2: Compare different extension builders in Barnes

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

Step 3: Hire Barnes extension builders with confidence

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

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

What to ask a Barnes extension builder before hiring?

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

An extension builder in Barnes 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 Barnes 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 Barnes?

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 Barnes 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 Barnes 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 Barnes

Can an extension builder in Barnes help with planning permission?

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

Many Barnes 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 Barnes help with materials and finishes?

Yes, most extension builders in Barnes 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.