Extension builders in London

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 London

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SOLO CONSTRUCTION MANAGEMENT LTD
No reviews yet
Extension Builder in London
Solo Construction is a leading design and build construction with an established and growing up reputation. Our extensive experience in London what allows us to understand and manage all risks and complexity in modern projects. Offering full architectural and interior design services what allows our clients to enjoy having their projects being in one safe hand from idea to completion. We undertake all types of building works from small refurbishment to new build.
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Bali construction
No reviews yet
Extension Builder in London
Hi is Armand general Builder with a experience 8 years in london
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Jake Gillam Carpentry
No reviews yet
Extension Builder in London
I'm a carpenter based in South West London with 10 years experience in the trade. I am flexible in the jobs I undertake and my work is to a high standard. I offer a friendly and reliable service.
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D. Keighley Project Management Ltd
No reviews yet
Extension Builder in London
Construction Project Manager specialists with over 12 years experience in the industry delivering projects of all scales and sizes across the Property, Commericial office and Retail Sectors. A methodical and meticulous planner with a keen eye for detail and extensive knowledge of the construction Industry.
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SDH INTERIORS LIMITED
No reviews yet
Extension Builder in London
I have a new business but with long time experience in carpentry and plumbing
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RS Homes
Rating: 5 out of 5
Extension Builder in London
We offer an affordable and competitive service locally for: Landscaping, Gardening & Garden Maintenance, Decking, Restoration & Refurbishment, Extensions, Conversions - General, Loft Conversions. With over 15 years experience in the construction and landscaping industry you can rely on us to provide a professional, punctual and trustworthy service. No obligation quotations provided upon request.
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Latest review:
Landscaping- 3 Jun 2021
On our first meeting I felt comfortable and was glad of input from Robin. Agreed to a plan and only had to wait a few weeks before work could start. All preparations made to protect my drive before skip arrived. All work carried out in a very professional manner and team were very polite and friendly. Even though weather was against ground works they provided shelter so work could continue. I’ve been very pleased with their approach and can’t fault the outcome. Although met with a couple of delays on garden furniture, (nothing to do with Robin and his team, circumstances outside control)all other aspects of this job have met with my approval. Was apprehensive of having people in but can honestly say there have not been any issues and when the skip was removed within an hour, Robin was back on site to clear and wash down the drive. So looking as good as new. It’s been a pleasure having them on my property and will look at using their services again in the future should the need arise. Nothing too much bother. So my thanks to them all.
Rizwan Latif
No reviews yet
Extension Builder in London
Hi, I’m a friendly and reliable painter and decorator with plenty of experience working on homes. I take pride in providing a clean, high-quality finish and making sure every customer is happy with the result. From walls, ceilings, and woodwork to full room makeovers, I always work carefully and with attention to detail. I’m tidy, respectful, and treat every home as if it were my own. Whether you already have paint or need advice on products and colours, I’m happy to help and make sure the job is done to a great standard from start to finish
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AN Imperial Build
New on MyBuilder
Extension Builder in London
We are a professional construction and refurbishment company providing high-quality services across London. We specialise in full property refurbishments, including painting and decorating, flooring, drylining, carpentry, tiling, kitchen and bathroom works, and general repairs. We pride ourselves on reliability, attention to detail and delivering every project to a high standard. No job is too small, and we are always happy to discuss our customers’ requirements and provide a professional solution.
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CPR (Complete Property Renovations)
No reviews yet
Extension Builder in London
CPR (Complete Property Renovations) is a professional property renovation company specializing in complete renovation solutions for residential and commercial properties. We deliver high-quality workmanship across every stage of the renovation process, from initial demolition and structural alterations to the final finishing touches. Our services include kitchen and bathroom renovations, flooring installation, painting and decorating, electrical and plumbing works, interior refurbishment, and complete property fit-outs. Whether you’re renovating a house, apartment, office, or retail space, we are committed to delivering reliable, efficient, and high-quality results tailored to your needs.
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Boundary builders
No reviews yet
Extension Builder in London
Family run company specializing in making more space extensions, loft conversions, out buildings,new builds. we can take the stress out of building for you from the start to finish with setting out architecture drawings building control structure build and interior ..
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ODG Construction Ltd
No reviews yet
Extension Builder in London
ODG Construction is engaged in the construction of domestic and commercial buildings. We specialize in groundworks, formwork, reinforcement, and concrete finishing. We promote a safety working environment by following Health and Safety standards. We operate on a 100 miles radius around London Home - ODG Construction Ltd. https://share.google/lQ5BKFPdy1JBhpNso
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Triune Developers Ltd
No reviews yet
Extension Builder in London
Triune Developers Ltd is a professional property development and building services company known for delivering high-quality workmanship and reliable project management from start to finish. With over 15 years of experience, we specialise in transforming properties through skilled construction, refurbishment, and decorative services. Our dedicated painting and decorating division is at the core of what we do. We provide premium interior and exterior finishes with exceptional attention to detail—whether it’s a full property renovation, a commercial space upgrade, or a single-room refresh. Every project is completed with preparation, precision, and a flawless finish that lasts. Alongside our specialist painting services, we offer a full range of building and development solutions, including: Property renovations & refurbishments. Home extensions & structural improvements. Kitchen and bathroom installations. Carpentry and joinery services. General building maintenance and repairs. We pride ourselves on being efficient, professional, and easy to work with. Our team works cleanly, communicates clearly, and respects timelines and budgets. The result is a smooth, stress-free experience and a finish that elevates the space.
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Ali S
Rating: 4 out of 5
Extension Builder in London
Construction comapany
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Latest review:
Tiling- 23 Jun 2026
Arrived on time amd conpleted the work ahead of time. Very pleased with his quality of work.
DDR Group Ltd
No reviews yet
Extension Builder in London
DDR Group Ltd is a professional building and refurbishment company providing high quality construction services across London and Essex. We specialize in bathroom fitting, kitchen installations, full property refurbishments, extensions, loft conversions, roofing, decorating, carpentry, groundwork, drainage and general building works.
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Loftxtnd Limited
Rating: 5 out of 5
Extension Builder in London
Hello! We are offering full range off work:full refurbishment,loft conversion,house extensions,driveway!
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Latest review:
The project lasted from July 2023 to Feb 2024 and comprised of: 1. Single story rear extension with new kitchen and underfloor heating 2. 75m2 patio 3. Internal reconfiguration including removal / installation of walls, new flooring, plumbing (including new boiler), new door frames, doors and skirting, redecoration, carpentry for cupboards 4. Ventilation of existing roof The team are both friendly and professional with Alin always on hand to manage any questions / situations as they arise. The work is clearly costed and every two weeks a valuation takes place to ensure transparency of work undertaken both in original scope and any extras. The quality of the build was excellent, something the building inspector commented on. Alin was recommended to me based on past work, and I in turn would highly recommend him.
Carpenters
No reviews yet
Extension Builder in London
Carpenter peinter small electrical
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4.6

Top rated Extension Builders

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

Quality screening

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

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

What are the hourly rates of extension builders in London?

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

Find extension builders in London with MyBuilder

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

Step 2: Compare different extension builders in London

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

Step 3: Hire London extension builders with confidence

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

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

What to ask a London extension builder before hiring?

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

An extension builder in 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 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 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 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 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 London

Can an extension builder in London help with planning permission?

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

Many 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 London help with materials and finishes?

Yes, most extension builders in 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.