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.

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Some of our top rated extension builders in London

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Qimi
No reviews yet
Extension Builder in London
My name is Bri decided to open my self up a construction company Qimi Building I have a passion for seeing homes come to life I have 2 very dedicated individuals who have a passion for building we offer all kinds of services please just ask me and I will give you the information any questions you would like to know regarding a job your wanting done and prices ect.
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E.r.m electrical services
No reviews yet
Extension Builder in London
We are ERM Electrical Service, a team of six dedicated professionals, specializing in electrical work for buildings and constructions. We provide safe, efficient, and tailored solutions for each project.
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Tamar roofing building services
New on MyBuilder
Extension Builder in London
This is Tamar roofing building services we run a brilliant company with excellent quality trades men on hand to get it done regardless of the job from your roof repairs to new roof insulation, flat roof repair replacement and all your building work under taking,we are fully qualified and insured team and won't be beaten on price friendly team here too help and easy to communicate with all work comes with standard 10 years garunteed from Tamar and free 5 years followed inspection to allways insure you stay safe and dry so for anything else please get in touch for free inspections.
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NIHAL BUILDER LTD
No reviews yet
Extension Builder in London
We have experience more than 5 years and do lot of type of work as loft and extension, guttering, building new home, refurbishing etc.
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Zayan Ltd
No reviews yet
Extension Builder in London
Zayan LTD services We are based in East Molesey , Zayan LTD services has been trading since 2015, but director Halit has been involved in landscaping and construction for 10 years. We cover London and Surrey, carrying out landscaping and building work. We have a dedicated team of professionals to ensure your project is carried out to the highest standard.
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Rajput construction
No reviews yet
Extension Builder in London
We are experienced and reliable builders specialising in house extensions, structural alterations and refurbishments. We carry out all work to a high standard and in line with Building Regulations. We pride ourselves on being punctual, tidy and professional, with clear communication from start to finish. Fully insured and committed to delivering quality workmanship on every project.
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Joseph
No reviews yet
Extension Builder in London
Long experience in Loft conversions and Kitchen extensions. References can be provided, completed jobs or active ones can be visited. I have done many projects as subcontractor and directly from clients. Looking forward for new challenge! Free quotes!!!
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SANDEEP SINGH
No reviews yet
Extension Builder in London
WE DO 10 YEARS EXPERIENCE OF EXTENSION, CONVERSIONS, PLASTER ALL KIND OF BUILDER WORKS
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Raminder Matharoo
No reviews yet
Extension Builder in London
General builder & carpenter; Renovations, extensions, Loft conversions, kitchens & bathrooms.
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ESL Excel Services
No reviews yet
Extension Builder in London
ESL adopts an interactive approach between project team members ensuring value can be obtained at all stages of project development and implementation. Firm has cultivated long term relationships with clients and adopted an integrated team approach with all those involved in a project that has resulted in ongoing repeat business and successful project outcomes. At each stage of the design and construction process the firm delivers value by use of carefully structured procedures that are particularly effective during the earlier stages of projects. Highly motivated, dedicated and experienced team, who remain closely involved throughout each assignment. Members of the project team will explore all strategic issues, and facilitate discussions, to ensure that the key objectives of a project are identified and appropriate solutions devised at each stage.
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HK GREWAL CONSTRUCTIONS LTD
New on MyBuilder
Extension Builder in London
About Us With many years of experience in the construction industry, HK Grewal Construction Ltd has built a strong reputation for reliable service and high-quality workmanship. We have successfully completed a wide range of projects, from smaller renovation and repair jobs to full property refurbishments, extensions, loft conversions and structural alterations. Where We Work We cover South London, Surrey and surrounding areas, and are happy to travel for the right project. Please get in touch to discuss your location and requirements. Our Expertise Our specialist services include extensions, loft conversions, structural alterations and steelwork, brickwork, plastering, roofing, bathrooms, kitchens, flooring, painting and decorating, and complete property refurbishments. We can manage individual trades or provide a complete project service from start to finish. Why Choose Us? We believe in doing the job properly, paying attention to detail and keeping our customers informed throughout the project. We take pride in our workmanship and aim to provide a professional, honest and reliable service on every job. Whether you are planning a small renovation or a complete home transformation, we work closely with you to understand your visio
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Fallow Business Group
No reviews yet
Extension Builder in London
We’re an experienced construction company willing to help you bring your project to life through our capable team. Get in touch for a no obligation quote
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Avonbeech Ltd
No reviews yet
Extension Builder in London
Avonbeech Ltd is a highly skilled and professional family run business specialising in Joinery and Carpentry. We pride ourselves on high quality workmanship and manufacture, having over 40 years' experience in the trade.
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Harrison cook
Rating: 5 out of 5
Extension Builder in London
Family run buisness All aspects of roofing Offering a 10 year garentee on all new roofs.
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Latest review:
Harrison completed the job to a high standard. He worked late to ensure the roof was left water tight overnight. The site was left clean and tidy.
Real1 Ltd
No reviews yet
Extension Builder in London
"I am a dedicated builder with extensive experience in construction and project management. I specialize in delivering high-quality projects, from concept to completion, ensuring durability, efficiency, and client satisfaction. My expertise spans residential, commercial, and custom builds, always focused on precision and innovation."
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Proactive creations ltd
No reviews yet
Extension Builder in London
Proactive creations ltd gives excellent service to our customers.Whatever we promise we deliver with excellent quality . Our dedicated team is very professional & customer oriented.
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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.

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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.