Extension Builders in London

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (19 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

3569 Results

Sort by:

H&G Renovations
No reviews yet
Extension Builder in London
"I'm a passionate kitchen and bathroom renovation specialist with over 25 years of experience transforming homes. My business is dedicated to bringing your vision to life, combining quality craftsmanship, innovative design, and a seamless customer experience. Let’s create your dream space together!"
Get in touch
L.A. Morris groundworks Ltd
No reviews yet
Extension Builder in London
20 years experience - We cover Groundwork’s, brickworks, driveways, big developments, fencing, new builds, very reliable and excellent service.
Get in touch
Get 2 go ltd
No reviews yet
Extension Builder in London
Hello, My name is Ash, and I am a builder with over 12 years of experience. I commenced my career with a roofing company, where I acquired essential skills and developed my own expertise. Over the years, I have engaged in various tasks, including wiring, plumbing, partitioning, and developing numerous skills. Today, I am capable of constructing new-build houses, as well as renovating, developing, and repairing existing properties. I am based in West London and commute to various locations, including Reading, Surrey, Southall, and Heston. Hiring me provides you with my extensive experience knowledge, including high-tech wiring and fixture repairs. From changing a basic lock to replacing an entire door, I am capable of performing a wide range of tasks, both large and small. I am eager to assist you.
Get in touch
MQ Brickwork
No reviews yet
Extension Builder in London
**Experienced Bricklayer Offering Quality Craftsmanship and Reliable Service** With over 18 years of experience in the UK construction industry, I am a skilled bricklayer dedicated to delivering exceptional quality and customer satisfaction. I specialize in a wide range of brickwork services, from residential and commercial projects to custom designs and repairs. **Key Services:** - Brick and block laying - New builds and extensions - Restorations and renovations - Garden walls and decorative features - Repairs and maintenance **Why Choose Us:** - Free, no-obligation quotations and professional advice - Commitment to excellence and attention to detail - Reliable and efficient service - Passion for the craft and dedication to customer satisfaction I take pride in my work, ensuring every project is completed to the highest standards. Whether you need a new build or a simple repair, my team and I are here to help bring your vision to life. Contact us today to discuss your project and see how we can meet your needs. IG MQ Brickwork
Get in touch
Build Better contractors ltd
New on MyBuilder
Extension Builder in London
Build Better Homes & Construction is a trusted local building company delivering high-quality workmanship at competitive prices. We specialise in garage builds, house extensions, home renovations, painting and decorating, door installations, insulation, and all aspects of general building work. We pride ourselves on being reliable, professional, and committed to completing every project to a high standard. Customer satisfaction, honest communication, and attention to detail are at the heart of everything we do. Whether you're improving your home or planning a larger project, we're here to help bring your vision to life.
Get in touch
Cranham village construction
No reviews yet
Extension Builder in London
General building, maintenance and repairs.
Get in touch
T & E
No reviews yet
Extension Builder in London
We’re a team of skilled professionals dedicated to bringing your projects to life—on time and within budget. Materials and labour or labour only — your choice. We can source everything you need, with quality guaranteed. If you’re ready to start, so are we!
Get in touch
KS builders
No reviews yet
Extension Builder in London
We can handle simple and complex jobs on time and with good price. We do all kind of jobs like painting and decorating, tiling, garden slabs, bath renovation , roofing , plumbing , electric , wood flooring , fix kitchen , skimming and maintenance etc…
Get in touch
H&R construction
No reviews yet
Extension Builder in London
Small enough to care big enough to cope!!
Get in touch
Kingsmarque construction and maintenance
Rating: 5 out of 5
Extension Builder in London
All building work taken on, slating and tiling, house renovations and extensions. We have a team of tilers, renderers, plumbers, painters and myself and business partner who run each job and manage the multiple trades required.
Get in touch
Latest review:
Extensions- 25 Aug 2020
Really professional and quick to provide quotes. Unfortunately, due to COVID and our circumstances changing, we have had to cancel the job. We would definitely go back to them in the future though.
G.B Building & Plastering
Rating: 5 out of 5
Extension Builder in London
We are a team of fully qualified and fully insured bricklayers/plasterers/general builders specialising mainly in extension building and coloured render systems. We undertake all plastering & brickwork jobs whether big or small. We are certified installers of EPDM rubber/GRP fibreglass roofing systems. We pride ourselves in the quality of our work, time-keeping and our tidiness. A Portfolio of our work can be made available to you upon request. IT IS OUR GOAL TO HELP YOU ACHIEVE YOURS
Get in touch
Latest review:
Extensions- 20 Jun 2019
Gary rendered the back of our house and plastered our hallway, stairway and upstairs landing. He did an awesome job, he had great attention to detail, very skilled and tidy too. He is a hard worker and would recommend him to anyone. Hopefully Gary can come back in 2020 to render the front of our house.
Bly Contracting Ltd.
Rating: 5 out of 5
Extension Builder in London
Bly Contracting specialise in construction projects within the residential sector. Whether your building your new home or extending, rely on our expertise. We offer a range of servicees: New Build: We work alongside our private clients to develop their ideal home Home Improvement: We can work with you to enhance your existing home Bespoke Landscaping: We offer extensive landscaping services to meet your requirements External Works: We construct patios, driveways and more
Get in touch
Latest review:
Will was helpful and gave me what I thought was a good quote. He was professional throughout. We had the old drive stripped off, new concrete edges around the perimeter and replaced the shingle. I am very happy with the the finished drive it looks great. I would recommend Bly contracting to anyone needed work done in the area.
Trevillion construction
No reviews yet
Extension Builder in London
My name is Nicky and I have over 15 years bricklaying and landscaping experience. With bricklaying I specialise in restoration and repointing. I am an experienced digger driver as well. Have worked on my own jobs which include garden renovations and extensions, and on bigger sites building new builds. I have recently set up this profile and look forward to new projects. Please feel free to get in contact for a quote or advice.
Get in touch
Tsk builders ltd
No reviews yet
Extension Builder in London
Welcome to TSK Builders LTD. We are an established business in Slough, with over 15 years’ experience in this industry We offer you all building services from small jobs to big jobs to Extension’s and refurbishments. . We offer a very friendly, tidy and professional and reliable service, we provide 1-year warranty on our work Here’s a list of the services we offer: New build,Extension,Loft conversion ,Brickwork ,Groundwork,Plumbing,Roofing ,Kitchen & Bathroom ,driveway Kind regards.
Get in touch
SCDEVELOPMENTS&sonsLTD
No reviews yet
Extension Builder in London
Free quotation - North London, herts and Essex
Get in touch
Yurii Patrash
No reviews yet
Extension Builder in London
Experienced Bricklayer with a Strong Work Ethic I am a professional bricklayer with over 8 years of experience in the construction industry. I specialize in laying bricks, building stone structures, and restoration work. My experience covers a wide range of services, from constructing foundations to building walls, fences, and decorative elements. I ensure every project is executed with great attention to detail and the highest quality standards. Key skills include: • Accurate brick and stone laying; • Building strong foundations, walls, and partitions; • Working with a variety of materials: natural stone, clinker, concrete; • Reading and working from technical drawings and plans; • Handling both large-scale projects and small repairs. I am committed to delivering the best results for my clients: the precision, quality, and durability of my work is my pride. I guarantee top-quality work and timely project completion. Ready to assist with any bricklaying needs in London and surrounding areas!
Get in touch

4.2

Top rated Extension Builders

Our Extension Builders in London, are rated 4.2 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.