Extension builders in Lewisham

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 Lewisham

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AJT Construction Beckenham Ltd
Rating: 5 out of 5
Extension Builder in Lewisham
AJT CONSTRUCTION WE BUILD WHAT WE LOVE, AND WE LOVE WHAT WE DO With today’s uncertain economy choosing the right builder for your project has never been more important.From conception to final build and completion it is vital to work with a company that understands your needsand has expertise to deliver on time and within budget. For over 30 years, we have built an enviable reputation in Beckenham and the surrounding areas, successfullymanaging projects in the construction industry
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Latest review:
Extensions- 23 Mar 2022
Dealing with Jason was an absolute delight. He was punctal, provided some great advice and introduced me to a great conservatory manufacturer. Would definitely use him again for further building work. Highly recommend.
GJ P Refurbishment Ltd
Rating: 5 out of 5
Extension Builder in Lewisham
At GSQ Construction our key focus is to achieve customer satisfaction by providing a high-quality construction service. We set our standards high with every project we undertake no matter how big or small. Choosing GSQ Construction guarantees an impressive end product that will satisfy for years to come
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Latest review:
Handyman- 4 Jun 2020
Great job well done! Highly recommend.
GMG - Georgian Masters Group Limited
Rating: 5 out of 5
Extension Builder in Lewisham
Hello. We are a new company, whose team consists of professionals with many years experience working both for residential and commercial property. You can boldly rely on the renovation of your home to our team, convince me the result will exceed expectations.
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Latest review:
Kitchen Fitting- 13 Oct 2024
Great communication, always available to clarify client questions, very diligent. Job well done and great finishing's. Thanks a lot Natella and team for all the effort
Gibbons & Sons
Rating: 5 out of 5
Extension Builder in Lewisham
Gibbons & Sons are a family run business and been trading for 30 years. Our areas of business are extensions, kitchen fits, summer houses, loft conversions & general building.
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Latest review:
Extensions- 24 Jan 2021
We chose Gibbons and Sons for our Loft extension and new bathroom as they was one of the few firms who we contacted and was more then happy for us to view their workmanship during and after the build so we good see the quality of their works. They have been courteous, polite, very patient and accommodating to our chopping and changing of ideas. They helped us to bring our visions to life and offered advice when required without being pushy and driving a hard sale. They have been open and honest with our ideas and their recommendations and in some cases suggested a alternative more cost effective option. All in all we would highly recommend Gibbons and Sons for all types of building works.
Builds Magic LTD
Rating: 5 out of 5
Extension Builder in Lewisham
We are a family business with an efficient and professional service. Having undertaken full renovations, extension, loft conversions and everything in between, we know we’ll be able to make your dreams come true. We won’t be the cheapest quote but we will be the most competitively priced to delivery the quality you’d expect and deserve. Working in partnership with our architects, engineers and surveyors we can support you from planning permission all the way to build completion.
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Latest review:
Extensions- 17 Mar 2024
Very happy with what we ended up with. Would use again, thank you
RAF pluming heating
Rating: 5 out of 5
Extension Builder in Lewisham
Raf Plumbing, Heating & Property Services At Raf Plumbing, Heating & Property Services, we deliver high-quality, reliable solutions for plumbing, heating, and full property renovations. Whether it's a small repair or a large-scale project, we focus on precision, safety, and customer satisfaction. Services We Offer: - Plumbing Repairs & Emergency Call-Outs - Central Heating Installation & Boiler Servicing - Full Bathroom & Kitchen Renovations - Wall & Floor Tiling - Plastering & Painting - Electrical Installations - Flooring, Decorating & General Refurbishments - Full House Renovation Projects Why Choose Us? - Professional, clean and reliable service - Transparent pricing with no hidden costs - Fully insured and all work covered by a 1-year guarantee - Fast response and excellent communication - Based in London, covering South East London & surrounding areas Hours: Mon - Sat, 8am - 6pm
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Latest review:
Plumbing- 8 Feb 2025
Everything went to plan, will definitely use again for any future jobs .Thank you
Silva
Rating: 5 out of 5
Extension Builder in Lewisham
Hello, my name is Thiago, and I am a carpenter specializing in custom furniture, installations, and high-quality finishes. With years of experience in the field, I always strive to combine quality, precision, and excellent craftsmanship in every project. I work with shelf installation, doors, flooring, custom furniture, and more, ensuring a well-executed service with high-quality materials and a perfect finish. My priority is always customer satisfaction, delivering solutions that blend functionality and aesthetics. If you’re looking for a reliable and professional carpentry service, get in touch, and let’s transform your space with durable and well-crafted work! 📍 Serving London 📩 Contact me for quotes and inquiries
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Latest review:
Joinery & Cabinet Making- 1 Feb 2025
Brilliant job done, made it look easy, would definitely recommend
JDS Maintenance
Rating: 5 out of 5
Extension Builder in Lewisham
Hi there, I am a Handyman, I got recomendations for my customers. Thanks a lot.
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Latest review:
Kitchen Fitting- 4 Apr 2025
Super professional, job completed properly. He is extremely knowledgable Would reccomend
ArtInFacade
Rating: 5 out of 5
Extension Builder in Lewisham
I’ve been working in the construction industry for 15 years, building a strong foundation of hands-on experience in both residential and commercial projects. Throughout my career, I’ve taken on roles ranging from general laborer to skilled trades, including roles like Roofing, Kitchen & Bathrooms fitting, framing, drywall, concrete work, etc. I’ve worked with a variety of crews and contractors, always contributing solid work and a strong work ethic. I’m currently based in London, but I’m available for jobs in surrounding areas and willing to travel for the right projects. I’ve worked in and out of London and have no problem taking on Projects of London when needed. My skill set includes: Reading and interpreting blueprints and site plans Extensions Loft conversion Kitchen & Bathrooms Framing, drywall installation, and finish work Concrete pouring and formwork Operating power tools and heavy equipment safely Site prep, demolition, and cleanup Strong knowledge of safety procedures What sets me apart is my reliability, attention to detail, and ability to stay productive without needing constant supervision. I take pride in my craftsmanship and believe in doing the job right the first time. I’m punctual, easy to work with.
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Latest review:
This contractor is very professional, friendly, and has a smooth finish. They’re probably one of the best in town, and they’re also affordable.
Swift Building Masters
Rating: 4.9 out of 5
Extension Builder in Lewisham
General Builder of over 40 years Experience. Carpentry & Joinery Background. I have worked on large and small Projects, Repair, Refurbishment, Extensions, Loft conversions and New-builds. Recently become a member of Federation of Master Builders. ALL WORK QUALITY ASSURED
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Latest review:
Extensions- 5 Nov 2016
Leslie carried out the following works: chemical damp injection to walls on rear extension, reroute down-pipe, repair fracture on rear wall, install gutter hedgehog. Hopefully, this will resolve some of the issues we had with damp, a blocked down-pipe and an overflowing gutter. Leslie arrived on time on the first day but was delayed a few hours the next day. However, the work still was done within two days as expected. Thank you!
JB Landscaping/Building
Rating: 5 out of 5
Extension Builder in Lewisham
I’m a sole trader with over 20 years experience in landscape gardening and building works. I do all types of work from handy man jobs right threw to small extensions I can design your garden as well as construct it. My work is done to a very high standered and comes with a years garrentee on all workmanship
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Latest review:
Bricklaying- 7 Oct 2018
John was brilliant - he started the job exactly when he said he would, and finished a day earlier than expected. His work was exceptional and we were really happy with the fence once finished.
Pulse Decorating and Refurbishment Limited
Rating: 5 out of 5
Extension Builder in Lewisham
Pulse Refurbishment is run and managed by Andrew and Ana, and we work with and outstanding team. The forever home you been dreaming of is just click away, be it a full refurbishment with extension and loft conversion or just a new kitchen. We care about our customers and strive to offer the very best customer service and workmanship every time. We believe in quality, honesty, and good work ethics.
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Latest review:
Andrew, Ana and the team built a wonderful downstairs cloakroom for me: the finish is excellent, they matched the original features of the house so well that it looks like it has always been there and they were professional to deal with throughout.
S & S Builders
Rating: 5 out of 5
Extension Builder in Lewisham
Hi my name is Stephen and I have 30 years building experience specialising in extensions and loft conversions I do 1 job at a time and I am on site every day. I have extensive knowledge of structural engineering I also carry building insurance .and i am a member of the National federation of builders.
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Latest review:
Extensions- 18 Jun 2025
Steve and his team were excellent throughout. Turned up on time every day, very reliable. Excellent attention to detail and great pride in their work. All areas of building work undertaken to a very professional standard. We had new bathroom fitted, new fence and handmade shed, lean-to rebuilt from scratch with new roof, patio doors, new flooring, plastering, outside patio. Very happy with the work. Good value for money. Highly recommended would use again without hesitation.
Propertyxhub Limited
Rating: 5 out of 5
Extension Builder in Lewisham
An experienced building trade specialist team with all qualified professionals. From new build to small work, we are happy to help you honestly.
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Latest review:
Plumbing- 2 Jun 2026
Thank you for doing that for me just give me a shout. I will do thank you very much. Thank you very much. I had in my car. Thank you for fixing my shower now I can have a shower without giving the whole bathroom a shower when I want a shower and for showing me that you have fixed my shower I very much appreciate you taking the time to come and fix my shower I am eternally grateful
Lee Constructions
Rating: 5 out of 5
Extension Builder in Lewisham
I have over 20 years Groundwork experience, including all aspect of the building trade. My catalogue of works include the following: Loft/house extensions, underpinning, general repairs, driveways, paving, landscaping, property management, refurbishments and project renovations. I am able to access various specialists to support all your building needs. I pride myself on my work ethic, reliability, transparency and honesty. I am happy to provide genuine references upon request. Please contact me for a no obligation quote. Thank you!
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Latest review:
Groundwork & Foundations- 16 Sep 2026
Martin was great. Great communication, thorough at the job. We are very pleased with the work. Would highly recommend. Many thanks
Hennow Construction
Rating: 5 out of 5
Extension Builder in Lewisham
Hi, we are a small father son business with over 30 years of building experience. As both father and son are bricklayers we tend to take on jobs such as: extensions brick and block work; out buildings; garage conversions; garden walls; patios and drive ways. Formerly Owens Construction, we have now merged with close family friends to expand the brand and become Hennow Construction.
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Latest review:
Bricklaying- 24 Apr 2019
Jake and Harry did an amazing job with our front wall and fence in the rear garden. We got three quotes for the job and they were the cheapest but also came across professionally. It wasn't a straight forward job, it was was using reclaimed materials that were varying size and shapes. I was also quite particular on the look, I wanted the brickwork to match our house, they took care to match the pointing and bricks but offered advice on how we could save money whist still getting the look we wanted. They arrived everyday on time, they were reliable, honest and extremely hardworking. They also kept us in the loop throughout the work making sure we were going to be happy with the end result. I have already recommended them to friends and will use them again for our next project. Thumbs up from us!

4.2

Top rated Extension Builders

Our Extension Builders in Lewisham, are rated 4.2 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 Lewisham?

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

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

What are the hourly rates of extension builders in Lewisham?

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

Find extension builders in Lewisham with MyBuilder

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

Step 2: Compare different extension builders in Lewisham

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

Step 3: Hire Lewisham extension builders with confidence

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

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

What to ask a Lewisham extension builder before hiring?

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

An extension builder in Lewisham 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 Lewisham 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 Lewisham?

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 Lewisham 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 Lewisham 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 Lewisham

Can an extension builder in Lewisham help with planning permission?

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

Many Lewisham 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 Lewisham help with materials and finishes?

Yes, most extension builders in Lewisham 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.