Extension builders in South London

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.4 (20 reviews)

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Some of our top rated extension builders in South London

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Mc Donald Ltd
No reviews yet
Extension Builder in South London
Mc Donald offer a wide range of services that cover the entire project. From concept to completion. Our wide range of capabilities means you’ll always have our in-depth expertise, experience and know-how at your disposal. By providing every service under one roof, Mc Donald Ltd can handle your entire project from start to finish. This includes architectural planning, designing, building regulations and planning permission, structural engineering, constructing and managing your project.
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Above & Beyond
No reviews yet
Extension Builder in South London
My work partner Paul and I have 40 years of combined building knowledge and experience. I specialise in extensions and building work, while Paul specialises in carpentry and internal works. Together we have the skills to complete an entire project start to finish. We concentrate on extensions and renovations however we have completed many projects both large and small. We are able to provide our website details as well as customer testimonies. Visits to previous projects can be arranged.
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TL BRICKWORK
No reviews yet
Extension Builder in South London
We are a family run business and have been trading for over 15 years in the construction industry, we have a very experienced workforce that are willing to go above and beyond for our customers. We specialise in all aspects of the construction industry.
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D & D landscaping and construction
No reviews yet
Extension Builder in South London
We have been in the industry for 15 years and decided to go on our own adventure
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A & A Build and Design
No reviews yet
Extension Builder in South London
Refurbishment, Extensions, New build, Design and Maintenance of any domestic building project.
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H M Renovations LTD
No reviews yet
Extension Builder in South London
We are a professional construction and renovation team based in the UK, operating under HM Renovations Ltd. Our team includes experienced electricians, plumbers, carpenters, and builders, allowing us to handle a wide range of residential and commercial projects from start to finish. We specialise in: Full property renovations and refurbishments Shop fitting and bespoke counter installations Bathroom and kitchen installations Plumbing, electrical, and carpentry work General building and maintenance We pride ourselves on high-quality workmanship, reliable service, and clear communication throughout every project. Fully insured and committed to customer satisfaction.
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DPS Builders
No reviews yet
Extension Builder in South London
Good and right work starting to finish
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ELIOTT
No reviews yet
Extension Builder in South London
Specialise in all kinds of brickwork/landscaping. General house maintenance ,garden maintenance,pond building,fencing. with over 20 years experience take pride in my work and my trades,always in a professional manner
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Keivin Topalli
No reviews yet
Extension Builder in South London
We specialise in many types of foundations. We are a team of 3 professional groundworkers. Things we specialise in: Piling (all types of mini piling,drop cases, screwpiling) Foundations (rafts, beams etc) Digger work( site prep, site clearance or your simple digger work) Steelfixing to engineered standards/ drawrings concrete laying ( to desired level)
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QC Projects Ltd
No reviews yet
Extension Builder in South London
At QC Projects , we specialise in high-quality residential and commercial construction across London and the surrounding areas. With over 10 years of industry experience, we pride ourselves on delivering projects professionally, safely, and to the highest standard from start to finish. Our services include extensions, loft conversions, full refurbishments, structural alterations, bespoke joinery, kitchens, bathrooms, roofing, fit-outs, decorating, and complete project management. Whether it’s a modern home renovation, a high-end finish, or a complex structural project, we bring the same attention to detail and commitment to quality on every job. We understand that choosing the right builder is a major decision. That’s why communication, transparency, cleanliness, and reliability are at the centre of how we operate. We work closely with clients, architects, designers, and building control to ensure projects run smoothly and are completed on time and within budget. Our team is fully committed to customer satisfaction and building long-term relationships through trust, workmanship, and professionalism. No shortcuts, no hidden surprises — just quality construction delivered properly. "Visit our website for more of our work"
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CARVE Engineering Co Ltd
Rating: 1 out of 5
Extension Builder in South London
We undertake large and small construction rebuild projects, house extension and loft conversion, shop design and decoration, home design and decoration, customized furniture. We can provide professional drawing and floor plan as well.
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Latest review:
Extensions- 19 Sep 2022
Man Ho or Calvin Ho' or Man Fu Ho, who owns Carve Engineering Co. Ltd. He also has a Hong Kong branch carve-eng.com . I didn't know he subcontracted the whole project to a group of Chinese mainlanders who couldn't speak English. And he asked a British Gas gas engineer to sign off the plumbing work. I obtained the planning in December 2021. The work started on 31/1/2022 and almost finished now 19/9/2022. It supposed to end in three months time as they promised. It's only a single storey side extension and shouldn't be left unfinished with pipes broke. The workers only came to work once a week and sometimes the work stopped for a month or so. The price included the purchase of a boiler and installation. But there's no timer or thermostat and I was asked to purchase these and install them with extra cost. The workers' van broke down five times and they didn't turn up for five different days. There's no windowsill and they called this a standard window people would install. The exterior wall was painted inconsistent to our original wall and I had to argue to get them pebbledash and repainted. They left the fences on our neighbours. The pipes are still leaking. Shower leaked for 3 months. They even charged extra for the electricity sockets they installed in our kitchen. They took down the mains water supply switch and never install it back so our house has no in house mains water stop valve! They didn't hoover and didn't have a hoover. Avoid this company!
Giger Developments
No reviews yet
Extension Builder in South London
Giger Development is a reliable and professional bricklaying company specialising in high-quality brickwork, blockwork, and general building services. We take pride in delivering strong, precise, and long-lasting results across both residential and commercial projects. From garden walls and extensions to structural brickwork and repairs, we combine skilled craftsmanship with a strong work ethic to ensure every job is completed to the highest standard. We focus on attention to detail, clear communication, and fair pricing, giving our clients confidence from start to finish. At Giger Development, we understand the importance of doing the job right the first time — building work that not only looks great but stands the test of time.
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AMG CARPENTRY (SE) LTD
No reviews yet
Extension Builder in South London
We undertake all aspects of carpentry and construction, loft conversions, 2nd fix, 1st fix, roofing, cut roofs, truss roofs, garden rooms, outbuildings, annex, extensions, flat roofs, bespoke carpentry, wardrobes, stairs
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Nms building ltd
No reviews yet
Extension Builder in South London
Kitchen extension Loft conversion and internal alterations
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Rowan groundwork
No reviews yet
Extension Builder in South London
Here to help
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EcoHome Essex Ltd
No reviews yet
Extension Builder in South London
Eco Friendly Construction Company. Our Eco Friendly & Carbon Neutral Projects Include New Construction, Tiny Homes, Guest Houses, Garden Rooms, Garden Offices And Also Extensions & Renovations. If it is "OFF THE GRID" Living You Require Or Ensuring Your Project Is As Eco Friendly As Possible By Installing As Many Eco Friendly Credentials Achievable Then We Can Help!
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4.4

Top rated Extension Builders

Our Extension Builders in South London, are rated 4.4 out of 5 based on 20 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.