Extension Builders in South London

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (22 reviews)

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Some of our top rated extension builders in South London

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Fred
No reviews yet
Extension Builder in South London
Looking for jobs
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Britania Building Services
No reviews yet
Extension Builder in South London
I’m a self employed builder with vast knowledge and experience for over forty years. I’m a multi trade person from construction, renovations, loft conversions and extensions etc. I’m an electrician, plumber, kitchen fitter, tiler and many other trades. My past experiences being, BT Engineer, Coca Cola Engineer, Sound Engineer, BBC sound engineer and few other companies I worked for.
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Planned Assets Ltd
No reviews yet
Extension Builder in South London
30years experience in construction
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Madalin Alin
No reviews yet
Extension Builder in South London
If you need a good team for any jobs dont hesitate to call us!
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Oak and stone construction
No reviews yet
Extension Builder in South London
We are a professional construction company specialising in building, refurbishing, painting, and decorating services. With a focus on quality, reliability, and attention to detail, we deliver projects for both residential and commercial clients, ensuring every job is completed to a high standard and on time. Quality building, refurbishing, painting, and decorating you can trust.
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Matthew proctor
Rating: 4.8 out of 5
Extension Builder in South London
Qualified bricklayer completing all aspects of building work and landscaping from small work to full extensions
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Latest review:
Bricklaying- 26 Mar 2026
Matthew completed the job that turned out to require more work than originally anticipated. I can certainly recommend Matthew as he was very obliging and willing to go the extra mile at no additional cost.
SUFASOLUTIONS Ltd
No reviews yet
Extension Builder in South London
Hello from SUFASOLUTIONS LTD,We are a family running I would welcome the opportunity to meet with you, understand more about your work with our organization, and discuss how we can work together most effectively. Please feel free to contact me to arrange a meeting. I'm looking forward to meeting with you in the future. FREE QUOTE
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L&V Contractors Ltd
No reviews yet
Extension Builder in South London
We are L&V Contractors expert in House extension and renovations.
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Paul Handover
Rating: 5 out of 5
Extension Builder in South London
Been laying bricks and undertaking other Masonry work for the last 10 years, from garden walls to houses, up to date on all nhbc standards, work completed to a high standard. also specialised in brickwork repairs
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Latest review:
Bricklaying- 31 Oct 2024
Paul is one of the best traders person I have ever come across. He is experienced, dedicated, attention to detail and honest. He is a man to go.
LPB Land Developments Ltd
No reviews yet
Extension Builder in South London
We have been in the construction business for more than 25 years ranging from general building works to new build developments. We have also refurbished large buildings in the London areas on behalf of clients and main contractors.
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Lart Build and Design Ltd
No reviews yet
Extension Builder in South London
I’m the director of Lart Build & Design, a specialist design & build contractor with several years’ experience delivering high-quality residential extensions, renovations, commercial projects and structural projects across Kent, London and Essex. We provide a fully managed service from initial consultation through to completion, covering groundworks, structural alterations, roofing, glazing, plumbing, electrics and final finishes. Every project is carefully planned and personally overseen to ensure excellent workmanship, clear communication and reliable timelines. We regularly undertake rear and side extensions, full refurbishments, bathroom and kitchen installations, RSJ works and bespoke internal layouts. All works are completed in line with current building regulations, with full insurance in place and Building Control sign-off where required. We primarily work across South East London, Dartford, Bexley, Bromley, Greenwich, Essex and surrounding Kent areas, and are happy to travel for the right projects. Our approach is simple: deliver quality work, be transparent on pricing, keep clients informed at every stage, and leave every site clean and safe. Much of our work comes through repeat customers and referrals.
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Ionut Toanca
No reviews yet
Extension Builder in South London
A professional painter, decorator, and builder with a passion for transforming spaces. I offer high-quality finishes, reliable service, and attention to detail you can count on — whether it’s a single room or a full property makeover. From walls to woodwork, interiors to exteriors — I’ve got you covered. Let’s make your space look its best!
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D&S Construction
No reviews yet
Extension Builder in South London
We provide construction services from planning to competition. We specialise in new builds, renovations or fit outs! Flooring and conversions (lofts) or extensions! We also offer other services which cover any construction builds like new kitchen strip outs or installing a new bathroom STP.
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SEC ROOFINGS LTD
No reviews yet
Extension Builder in South London
We offer a good quality and best experience on any type of roofing and refurbishment!
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JBL DEVELOPERS LIMITED
No reviews yet
Extension Builder in South London
JBL Developers is a professional residential and commercial property‑development company, fully registered at Companies House. Visit our website to explore our portfolio and services. With a focus on quality, integrity and client satisfaction, we deliver bespoke renovations, refurbishments, conversions and new builds, tailored to your vision and budget. From the initial consultation through design, planning, build and hand‑over, our experienced team manages every phase with transparent communication and attention to detail. Whether it’s transforming a single room, overhauling a full home or developing a larger project, we ensure projects are completed on time, on budget and to the highest standards. At JBL Developers we believe in building lasting relationships and creating spaces that are not only aesthetically pleasing but functional, sustainable and built to last. Get in touch at to find out how we can bring your property ambitions to life.
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Poul
No reviews yet
Extension Builder in South London
Loft, extension, carpentry work , houses repairs, kitchen installment , electricity installment and maintenance , conduct designs of interior and exterior according to the customers want.
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4.1

Top rated Extension Builders

Our Extension Builders in South London, are rated 4.1 out of 5 based on 22 reviews from customers like you.

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

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 South London 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 South London who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in South London?

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

Find extension builders in South London with MyBuilder

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

Step 2: Compare different extension builders in South London

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

Step 3: Hire South London extension builders with confidence

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

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

What to ask a South London extension builder before hiring?

Before hiring an extension builder in South London or extension building company in South London, 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 South London?

An extension builder in South London 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 South London 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 South London?

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 South London 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 South London 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 South London

Can an extension builder in South London help with planning permission?

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

Many South London 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 South London help with materials and finishes?

Yes, most extension builders in South London 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.