Extension builders in London

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.6 (18 reviews)

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Some of our top rated extension builders in London

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D&T building company
No reviews yet
Extension Builder in London
we are proud to announce to you D&T building company we cover all building work from wall repairs to full extensions, driveways, built BBQ’s, out houses, converting rooms into gyms and fencing, with over 20 years experience and a high standard of work, because of the pandemic and things slowing down it is time for us to branch out to new areas and new people, our portfolio is very large with 100% customer satisfaction and a very friendly team that can carry out all your needs
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T bros design and build
No reviews yet
Extension Builder in London
My company is providing good work in any field and we cover all area and we finish work quickly
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Made By Metos
No reviews yet
Extension Builder in London
Hi, My name is Selo, always looking for friendly clients to work with, I'm famously known for my dad jokes and strong cup of coffee; would be delighted to discuss quotes over one. I look forward to working with you. Sincerely, Selo Specialities: Loft Conversions Extensions Home Refurbishments Painting
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Nabcon construction ltd
No reviews yet
Extension Builder in London
Nabcon Construction Building Trust, Crafting Quality. With 15 years of proven experience, Nabcon Construction delivers reliable, high-quality construction solutions on time and within budget. From residential to commercial projects, we turn visions into reality with expert craftsmanship, innovation, and integrity.
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DTK Construction Limited
No reviews yet
Extension Builder in London
We are specialists in loft conversions and extensions and we also undertake full refurbishments.With over 20 years experience in the construction industry. Your project is in safe hands! We are devoted to maintaining high standards of work.
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Premiere Site Services
No reviews yet
Extension Builder in London
Speed and quality is our Motto . Look no further you fond the correct organisation to deliver your job fast and defect free.
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Judge Construction
No reviews yet
Extension Builder in London
We are building contractors based in the East London and cover north London, Essex and south East London. -New Build -Loft Conversion -House Extension -House Refurbishment -Roofing -Double glazing -Plumbing -Electric -Bathrooms -Decorating Check out our social media page. Instagram: judge_construction
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DJG BUILDING WORKS
No reviews yet
Extension Builder in London
DJGBUILDINGWORKS offers a professional service specializing in loft conversions, extensions and refurbishment we are over 10 years providing a high standard work and high standard finish focusing on quality or work
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Stonehouse 300 Ltd
No reviews yet
Extension Builder in London
A recently formed limited company with nearly two decades of experience, we specialize in the construction of both commercial and domestic buildings, as well as a range of other construction installations such as extensions, kitchens, bathrooms and more. What sets us apart from the rest is our dedicated team of over 20 skilled workers, who blend their expertise with our years of industry knowledge to deliver unparalleled quality and innovation in every project we undertake.
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L holah
No reviews yet
Extension Builder in London
All building work 35 years experience No job too small
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EQUIP BUILDERS LTD
No reviews yet
Extension Builder in London
Equip Builders LTD is a leading construction company specializing in property renovations and extensions. With over 8 years of experience in the industry, we have built a reputation for delivering high-quality workmanship and exceptional service to our clients. At Equip Builders LTD, we understand the importance of transforming your property into your dream home. Our team of skilled professionals is dedicated to providing innovative solutions and personalized designs to meet your specific needs and preferences. Whether you are looking to add more space to your home or update its existing features, we have the expertise and resources to bring your vision to life. Our commitment to excellence is evident in every project we undertake. From the initial consultation to the final completion, we strive to exceed expectations and ensure complete satisfaction. With Equip Builders LTD, you can trust that your project will be completed on time, within budget, and to the highest standards of quality. Contact us today to learn more about our services and how we can help you enhance the beauty and functionality of your property. Let Equip Builders LTD be your partner in creating the home of your dreams.
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GM DESIGN & BUILD
No reviews yet
Extension Builder in London
GM Design & Build is an independent architectural practice offering tailored design services with a focus on residential projects. I provide high-quality, cost-effective architectural solutions for homeowners and small businesses, with expertise across a range of property types, from new builds to commercial spaces. As a sole practitioner, I offer a personal, hands-on approach to every project, ensuring your ideas and needs are fully understood and translated into thoughtful, practical designs. My services include everything from planning and building regulation drawings to the planning application process, guiding you smoothly from concept to completion. Core services include: -Single & Double Storey Extensions -Loft Conversions -Interior Remodelling -New Build Design -Small Commercial Projects -Garage Conversions -Outbuildings I also provide additional services such as party wall advice, tender packages, and procurement. For those who prefer a comprehensive solution, I ensure high standards and a streamlined experience from start to finish. If you're ready to bring your vision to life, get in touch for a discussion or consultation.
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S fartade serban
No reviews yet
Extension Builder in London
Hello, and thank you for considering our services for your construction needs. We are a team of experienced professionals dedicated to delivering high-quality, reliable, and innovative construction solutions. Whether you're planning a residential project, a commercial build, or a renovation, we bring expertise, attention to detail, and a commitment to customer satisfaction to every job we take on. Our goal is to make your vision a reality, from the initial design phase through to project completion. We prioritize clear communication, timely execution, and ensuring your project stays on budget. With us, you can expect a seamless experience and outstanding results.
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Adrian
No reviews yet
Extension Builder in London
Bricklayer with 8 years’ experience, covering all aspects of brickwork including new builds, extensions, garden walls, and repairs. Reliable, hardworking, and committed to high-quality, tidy workmanship. Always aim to finish jobs on time with customer satisfaction as a priority.
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Bettersiteconstructionltd
Rating: 2.5 out of 5
Extension Builder in London
Hi am mr saini from Bettersite construction our team help to provide satisfy construction jobs we undertaken new built extension,loft,renovation,kitchen bathroom landscaping,krender, we ensure that we provide quality work my teamwork projects we can show if want people to see will admire definitely
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Latest review:
Restoration & Refurbishment- 18 Apr 2026
I had my bathroom fully tiled and refurbished by Mr Madan and it was done with patience and professionalism. My house is 1930s build and it comes with its own challenges when doing a project, but Mr Madan dealt with every challenge, whilst keeping my costs down. I'm 100% happy with the end result and I will highly recommend him.
Bricklayer paving concrete kerbs
No reviews yet
Extension Builder in London
Professional Bricklayer based in London with 15+ years experience in construction, Fully qualified (CSCS Blue Card, NVQ Level 2). Experienced in managing small teams and delivering projects safely and efficiently. Services include:• Brickwork & Blockwork• Extensions & Structural Work• Garden Walls & Landscaping Brickwork• Repairs & Repointing I focus on quality, precision, and customer satisfaction. Clean and tidy work guaranteed. Available for private and subcontract work. Competitive prices and free quotations.
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4.6

Top rated Extension Builders

Our Extension Builders in London, are rated 4.6 out of 5 based on 18 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.