Extension builders in London

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

Easily find verified London Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in London.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in London

3723 Results

Sort by:

Vj construction services
No reviews yet
Extension Builder in London
Hi I am a professional painter and decorator.I have been working as a painter and decorator for 20 years and I provide a very good service.My customers are very happy after I finish the job.So far I never had any complaints from any of my customers.I am very honest, trustworthy and reliable.
Get in touch
SEADAGPROPERTY VENTURES LTD.
No reviews yet
Extension Builder in London
Seadag Property Ventures (SPV) is an environmentally friendly company offering Services to both residential and commercial sectors. We are into property refurbishment, Eco/Modular Constructions, General Facility Management, Sales & Services of White Goods, Property JV, Property Sourcing, and Property Improvement.
Get in touch
cloud 9 builders ltd
No reviews yet
Extension Builder in London
i am a bricklayer and plasterer
Get in touch
Rapid Construction Ltd
No reviews yet
Extension Builder in London
We are a general building company specialising in interior and exterior renovations including new build extensions and loft conversions. We pride ourselves on the high standard of work with attention to details and the relationships we have with our customers.
Get in touch
NIRVAIR LONDON LTD
No reviews yet
Extension Builder in London
All forms of domestic and commercial property builder services including extensions, new build, refurbishment, flooring, bathrooms, roofing, electrical and plumbing. We provide a reliable, high quality and price competitive services in and around London
Get in touch
KXL GARDEN HOUSES LTD
No reviews yet
Extension Builder in London
Welcome to KXL Garden houses Ltd At KXL, we specialize in turning your vision into reality. With years of experience in the construction industry, we are dedicated to delivering high-quality craftmanship, reliable service, and projects completed on time and within budget. Our services include: Home extensions, renovations and new builds. Outbuildings: Garden studios, Houses, Playroom or any others with choice of Sauna, toilet/bathroom, Bar or Others. Inside house works: Painting, tiling, flooring and others. What sets us apart? . Professional Expertise: We work with skilled tradespeople and ensure every project meets the highest industry standards. . Customer-Focused: Your satisfaction is at the heart of everything we do. From the initial consultation to project completion, wee will guide you every step of the way. . Transparency: We pride ourselves on clear communication, honest pricing, and delivering exactly what we promise. Whether you are building your dream home, upgrading your space, or embarking on a commercial project, we're here to bring your ideas to life. Let's build something great together. Contact us today to discuss your project.
Get in touch
RRV Construction
No reviews yet
Extension Builder in London
Hello ,my name is Radu,i am bricklayer,i do any construction job around your house
Get in touch
ALbuild
New on MyBuilder
Extension Builder in London
SHUTTERING CARPENTER | FORMWORK | CONCRETE | GENERAL BUILDING With over 20 years of experience in construction, I specialise in shuttering carpentry, formwork and concrete work, with experience across a wide range of building projects. 🔨 Shuttering carpentry & formwork 🏗️ Concrete work 🏠 Roofing 🧱 General building & construction work 🔧 Repairs, alterations and other building jobs I’m experienced, reliable and take pride in delivering quality workmanship and a professional finish. 📍 Based in East London 📍 Available for work across East London and surrounding areas For enquiries or to discuss your project, please send me a message with the details
Get in touch
Loft and refurbished house
No reviews yet
Extension Builder in London
I’m a reliable construction worker with 4 years’ experience on residential and commercial sites, strong knowledge of site safety procedures, and a proven record of finishing projects on time while keeping workplaces safe and tidy. I am multi skilled worker i do plumbing, skimming,flooring, tiles and electricity One think more i am doing my job yourself and also think about customer trems and conditions and we dont do any rush on a job
Get in touch
Right Triangle Build Ltd
No reviews yet
Extension Builder in London
New build • Full House Refurbishment • Extensions & Loft conversions
Get in touch
Garry Carpets and flooring ltd
No reviews yet
Extension Builder in London
We do carpet work flooring and bathroom, fitting fencing any kind of paint work and flat roofing
Get in touch
Galaxy Stones Ltd
No reviews yet
Extension Builder in London
We are a family business, with over 45 years in the industry whom incorporate all kinds of works consisting of: construction and development. We cover all corners from A-Z: Architectural, Civil Engineering, Conversions, Extensions, Painting & Decorating and many more. All trades offered come with appropriate certification and qualifications i.e: NIC, Gas Safety Registered etc. To get a FREE quotation please do not hesitate to contact us and one of our surveyors will come on site to meet you.
Get in touch
Brave Vic Builders ltd
New on MyBuilder
Extension Builder in London
Hi, I’m a professional carpenter and kitchen fitter with experience in carpentry, kitchen installations, and general joinery work. I take pride in providing high-quality workmanship, paying attention to detail, and completing every job to a high standard. Whether you need a new kitchen fitted, bespoke carpentry, or other joinery work, I’m happy to discuss your requirements and provide a reliable, professional service.
Get in touch
BUTA PRO LTD
No reviews yet
Extension Builder in London
BUTA Pro Ltd - is a renovation contractor, who are professionals, specializes in renovating the interior, exterior of existing homes and businesses. Our teams have a strong understanding of construction techniques and materials, as well as experience in project management. Also we are able to communicate effectively with clients, to understand their needs. Our architects and engineers will carefully check your needs, create a budget, designing the layout, and obtaining the necessary permits. We build-renovate your dreams...
Get in touch
Rashpal
New on MyBuilder
Extension Builder in London
Pal Home Improvements Limited Pal Home Improvements Limited provides reliable, high-quality building and renovation services across London and surrounding areas. Customers choose us for our skilled workmanship, honest pricing, clear communication and attention to detail. We undertake full refurbishments, extensions, loft conversions, kitchens, bathrooms, roofing, plumbing, electrical work, plastering, decorating, flooring, paving and landscaping. From small improvements to complete building projects, we deliver professional results you can trust.
Get in touch
Urban Builders Ltd
No reviews yet
Extension Builder in London
Urban Builders are a well-established General Building company based in London. We have carried out a full portfolio of works from new build to landscaping. We are aware of our client’s needs and requirements. We are honest, knowledgeable, trustworthy, efficient and reliable.
Get in touch

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.