Extension Builders in Belgravia

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

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Some of our top rated extension builders in Belgravia

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Izmy Construction Ltd
Rating: 5 out of 5
Extension Builder in Belgravia
Small construction company with over 30 years experience, taking on all aspects of work. We take pride in all our works with excellent work ethic throughout.
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Latest review:
Bricklaying- 16 Dec 2021
I'm very pleased with the repair that Jack carried out on my garden wall. Even though it was a small job he took the time to do it properly and ensured the bricks that had fallen down were put back straight. It started raining a little on the day causing the cement to run. Jack returned a couple of days later to tidy it up like he said he would. On inspecting the wall today I noticed that the cement on the bricks on the inside of the wall did not look as neat as how it looks on the outside of the wall. Maybe the rain caused the cement to run too much, I don't know. Overall I am pleased though and I've asked Jack to quote for another job.
NGBROTHERSLTD
Rating: 5 out of 5
Extension Builder in Belgravia
HI TO ALL, WE ARE A COMPANY DOING All aspects of construction work, 3D PLANNING DESIGN ,New Build ,Extensions,loft conversions ,PRC HOUSE REPAIR ... All aspects of internal high end finish ——CABINET MAKING, GENERAL CARPENTRY, LANDSCAPING NO JOB TO SMALL !!! YOUR SATISFACTION IT'S OUR PRIORITY ...... THANK YOU!!!
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Latest review:
Joinery & Cabinet Making- 20 Nov 2019
I had to put the job off until after Christmas, but Ghenadie & brother was very polite and professional in providing me with a decent quote that included the material/labour for the work that had to be done.
A S Builders
Rating: 5 out of 5
Extension Builder in Belgravia
We are a family run business in construction industry since 1990, initially started by my father and now his sons have joined the business and looking to revitalised the business through the use of up-to-date technology. We undertake all types of building work through our team of skilled labour from a small job up to New Build. Our most recent job was conversion of a detached property to 7 HMO's.
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Latest review:
Extensions- 29 Apr 2026
Heera, Jagthar and team was my first personal experience with builders. Let me tell you, it was a pleasure to have them do our porch and other renovations in the house. They are so courteous, hard working and provided a great service. Firstly, I had a comprehensively written quote breaking down all of the steps required. Heera then ensured to keep me in the loop of any developments/any changes of plan required, outlining the reasons why and options, making it easy to understand and work together to completion. Their finish was to a high quality and they would always go the extra step to ensure this. I highly recommend AS Builders for any job and will definitely use them again in the future, and would recommend to my friends and family also. If you are considering them, grab a free quote and go from there... That's what I did! Thank you AS Builders for our renovations!
PRASH DEVELOPMENTS LIMITED
Rating: 5 out of 5
Extension Builder in Belgravia
PRASH DEVELOPMENTS LTD specialises in construction of Large Luxury New build Home, HMO & Flat developments, Extensions and Loft conversions We are team of skilled professional with 13 years of combined experiences. We pride ourselves in offering best quality hassle free service with effective pricing and timely delivery. Please feel free to contact us for any construction related information.
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Latest review:
The builders were in time and a great job done in one day when others quoted for 3 days job — all done with great professionalism and satisfaction — will give them 10⭐️
Orb Vision Ltd
No reviews yet
Extension Builder in Belgravia
We are a family run construction company specialising in loft conversions, kitchen extensions and general refurbishments. THe company was incorporated in February 2000 and we have been trading for 18 years. We have completed 100's of loft conversions, extensions and house builds.
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Carpenters
No reviews yet
Extension Builder in Belgravia
Carpenter peinter small electrical
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NEW LOOK TRADERS LTD
Rating: 5 out of 5
Extension Builder in Belgravia
New Look Traders is a company offering a complete building solutions. Our work ranges from small refurbishment projects to bigger scale house extensions and loft conversion. Our team consists of experienced tradesmen off all areas, whose dedication and commitment allows us to deliver high quality work.
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Latest review:
Restoration & Refurbishment- 5 Apr 2025
Where do I begin? So Alex and his team has pretty much renovated two flats including external work such as roofing. The work involved was quite challenging as the building has a lot of damp / mould / leaking issues. Alex’s attitude towards resolving every matter was exemplary. He would take his time to explain his strategy to tackle each and every problem in a very metholodical way. I have never seen anything like it. I am so pleased with Alex’s work and so are my tenants who live in the flats. I would highly recommend Alex, especially for tougher jobs!
TNK CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Belgravia
Experienced quality builders. You can rely on us to complete your project weather it’s a straight forward small job or a complicated bigger project with attention to detail.
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Latest review:
Conversions - General- 6 Dec 2024
Amazing builders. Very knowledgeable of building methods and solutions. Very strong and tough guys. Work really hard. Very courteous and patient. Very good results. They replaced a ceiling; built an extension; laid paving stones. All done to complete satisfaction.
Valiant Construction Ltd
Rating: 4.2 out of 5
Extension Builder in Belgravia
Free consultation to discuss the your requirements! Valiant Construction Ltd is a property development company that specialises in residential property development and undertaking various building works to construct extensions new builds and refurbishments
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Latest review:
Carpentry- 8 Sep 2021
excellent service door perfect and he cleaned up after him Would recommend
NuLux group
No reviews yet
Extension Builder in Belgravia
At Nulux we specialise in interior design, Constuction property renovations and maintenance. We treat every project as it’s our own home providing outstanding quality work and services.
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M&D BUSHATI BUILDERS LTD
No reviews yet
Extension Builder in Belgravia
We do general builder jobs, We are respectful, serious and professional.
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Montrose builders limited
Rating: 5 out of 5
Extension Builder in Belgravia
Montrose builders is family run having been established by 2 brothers Neil & Nick. Are expertise and knowledge makes us the first choice in providing building services for both homeowners and commercial enterprises. most of our work comes through recommendations providing an honest testament of the service we provide. our company is run on the cornerstones of being family run, providing quality work for the fairest price, with a company ethos of being approachable, friendly and honest.
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Latest review:
Waste Clearance- 17 Jun 2024
Excellent service, quick responses to messages and queries. Work carried out to a high standard, I wouldn’t hesitate to recommend or use them again.
House2Home
Rating: 5 out of 5
Extension Builder in Belgravia
House to Home Atelier is a local building company based in Abbey Wood, South East London. We specialise in end-to-end home renovations and construction, from initial design and planning to final finishes. Our team delivers loft conversions, house extensions, full refurbishments, bathrooms, kitchens, and bespoke interior solutions, always with a focus on quality, efficiency, and maximising space. We combine traditional craftsmanship with modern solutions, ensuring every project is completed on time, on budget, and to the highest standards. With our experience and carefully selected team of skilled tradespeople, we take care of everything from structural work and plumbing to carpentry, plastering, and finishing touches. We are local, accountable, and hands-on, so you always know who is managing your project. Your home is your investment, and we treat it as our own. Whether it’s a small repair or a full-scale renovation, we deliver solutions that maximise space, enhance character, and provide lasting quality.
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Latest review:
Works consisted of hip to gable loft conversion under permitted development and a refurbishment of the first floor of a semi-detached house into a four bedroom/bathroom layout, including new windows, balconies, wiring and plumbing as well as sound proofing the walls. With 100m2 of works this was my first introduction to a major building project and I was worried by the horror stories I have heard about builders. From the outset Monika set my mind at rest, listening to what I wanted, making helpful suggestions, offering tips for instance on how to save on the scaffolding and always asking me when choices needed to be made. She took the trouble to ensure that I knew what was happening, with daily photos of progress without the need for me to climb scaffolding. I was working to a tight timescale and budget, which Monika understood, and even having accommodated a number of changes including some additions, the project came in on time and on budget. All of the workers on the site were very professional and the quality of the work and the attention to detail was exceptional. I have no hesitation in recommending Monika and her team - I went into this project apprehensive and not sure what to expect; thanks to Monika, I came out the other side delighted by and looking forward to working with her and her team again to renovate my ground floor.
LS London Contractors
No reviews yet
Extension Builder in Belgravia
LS London Contractors - Experienced and friendly team, located in South West London, specialising in extensions, loft conversions and all refurbishment works to a high standard finish for customers.
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DMurphy Construction
No reviews yet
Extension Builder in Belgravia
I have been working in the construction industry for 20 years now. During my time in the industry I have gained a lot of experience from all types of projects .. I specialise in basements, loft conversions, extensions, refurbishments & shop fitting. I have a great team of fully certified tradesmen & have references from of list of happy clients.
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NexLevel Contractors Ltd
Rating: 5 out of 5
Extension Builder in Belgravia
We are a small, family owned, London based building company with an excellent reputation for workmanship and customer service. Our people hold many trade specific accreditations such as Gas Safe Register and NICEIC and should give you the comfort that you are dealing with professionals. We are accredited by the of Federation Of Master Builders & full members of TrustATrade. With a team of qualified professionals we offer a complete service for all of your domestic & commercial needs.
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Latest review:
Restoration & Refurbishment- 11 Jan 2018
Dorian Lula and his team completed in excellent terms full flat renovation. Dorian is very accommodating and his communication is fantastic as we didn’t have any misunderstandings ... I am glad I have met him and for sure I will be keeping in touch for my next project. Special thank you to this site for this fantastic opportunity as I feel I got a very good deal Yours truly Violeta Ku

4.2

Top rated Extension Builders

Our Extension Builders in Belgravia, are rated 4.2 out of 5 based on 19 reviews from customers like you.

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What types of services are offered by local extension builders in Belgravia?

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

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

What are the hourly rates of extension builders in Belgravia?

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

Find extension builders in Belgravia with MyBuilder

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

Step 2: Compare different extension builders in Belgravia

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

Step 3: Hire Belgravia extension builders with confidence

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

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

What to ask a Belgravia extension builder before hiring?

Before hiring an extension builder in Belgravia or extension building company in Belgravia, 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 Belgravia?

An extension builder in Belgravia 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 Belgravia 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 Belgravia?

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 Belgravia 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 Belgravia 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 Belgravia

Can an extension builder in Belgravia help with planning permission?

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

Many Belgravia 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 Belgravia help with materials and finishes?

Yes, most extension builders in Belgravia 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.