Extension Builders in Brondesbury

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (19 reviews)

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Some of our top rated extension builders in Brondesbury

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Signature 1 Construction Ltd
Rating: 4.5 out of 5
Extension Builder in Brondesbury
Signature 1 Construction LTD is a family run business with over 25 years experience in the building industry. We specialise in extensions, loft conversions and full house refurbs. Every job we undertake we take great care of the clients house and are experienced project managers will look after you from start to finish.
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Latest review:
Extensions- 30 Sep 2025
Overall, I’m very pleased with the work Marin has carried out for us and I’m currently in the process of instructing him to do more work. Marin built a high spec cedar shed for us with electrics and plumbing, some brickwork and laid composite decking. Marin came across, honest and reliable, which in itself is rare. He was on site most mornings to make sure his tradesmen were on the right tracks. Like with a lot of these things there were some issues along the way and I was highly impressed by Marin’s ‘no quibble’ approach to rectify any problems. I myself have a high attention to detail and am quite indecisive (nightmare client) and Marin was happy to work with me with changes to the project without incurring extra costs.
LEBELLE HERITAGE & RESTORATION LTD
Rating: 5 out of 5
Extension Builder in Brondesbury
Lebelle Heritage & Restoration Lebelle Heritage & Restoration is a professional building and construction company specialising in renovations, refurbishments, and heritage restoration. We take on all types of projects, from full property renovations and structural upgrades to detailed interior finishes and the careful restoration of period features. Our team is skilled in both traditional craftsmanship and modern construction methods, allowing us to deliver work that is reliable, high-quality, and built to last. Whether we’re restoring the character of an older property or breathing new life into a modern home, we focus on precision, honesty, and clear communication throughout every stage of the job. We pride ourselves on delivering clean, efficient, and well-executed work that meets the needs of our clients and respects the integrity of each building. At Lebelle Heritage & Restoration, we build, renovate, refurbish, and restore with a commitment to quality and long-term durability.
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Latest review:
After a previous contractor took our money and left our loft extension unfinished, we were devastated and worried about how we would ever get our home back to normal. Then Lewis from Lebelle stepped in and completely turned things around. Lewis was patient, understanding, and incredibly professional. He worked quickly, kept costs under control, and finished the loft extension to a standard we’re so happy with. The stress he took off our shoulders was unbelievable. We honestly can’t thank Lewis enough. If you’re looking for someone trustworthy, skilled, and genuinely caring, Lebelle is the company to call.
Dan
Rating: 5 out of 5
Extension Builder in Brondesbury
I do loft, extensions and refurbish houses (General building)
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Latest review:
Hi, Dan recently completed a loft conversion and ground floor extension for our house in Ealing. It is the second time I've used him for a loft conversion. We are delighted with the work, team, price and timing and I highly recommend him. Dan is entirely trustworthy, and the team are a mixture of his family, friends and choir group. Like all projects there were a few snags and without fail Dan was pragmatic, helpful and keen to make sure we were happy with the quality at the end. I've recommended him to neighbours on both sides who are both pleased and happy to recommend him.
Rose Projects
Rating: 5 out of 5
Extension Builder in Brondesbury
At Rose Projects we build to your lifestyle, A family run business with a fresh approach covering all aspects of Construction. Craftsmanship is our main focus always maintaining high standards. We work along side Architects, Engineers and Designers We have an organised team of qualified tradesmen which take pride in there work with projects completed on time and budget. References available upon request, Come and see previous projects for ideas.
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Latest review:
Extensions- 26 Sep 2022
Excellent work with the garden office/gym. Finished really nicely and exactly what we were looking for. Took quite a while but well worth the wait. We requested a labour quote and worked with Alf on a receipts basis for material and other costs. This worked out perfectly for us both. Alf's initial estimate of the materials cost was virtually spot on, which is very impressive given the inflation rate for building materials. Thanks again for all your hard work!
KML BUILDING (UK) ltd
Rating: 4.5 out of 5
Extension Builder in Brondesbury
KML is a Central London-based building company with a strong reputation for quality, reliability, and attention to detail. We specialise in home extensions, refurbishments, HMO conversions, and general building works — providing tailored solutions for both residential and commercial clients. As a small, hands-on team, we offer a personal service from start to finish, ensuring every project meets the highest standards of craftsmanship and compliance.
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Latest review:
Bathroom Fitting- 13 Oct 2025
Camilo was supposed to meet me today to give me a quote. He missed our appointment without any notification. I am not here to chase people to do their job. The job will be advertised again, as he was not hired.
First Int. Project Limited
Rating: 4.4 out of 5
Extension Builder in Brondesbury
Back on MyBuilder after 7 years !!! Design and build Architectural team Structural engineers team Build and construction Our business is based on TRUST | QUALITY | CARE Our company cover the following trades: -steel erecting - steel structures -roofing - loft conversions -plasterers - internal skimming -painters and decorators -kitchen installers -bathroom fitters -bricklayers - for extensions -landscapers -electricians -gas engineers -carpenters - floor, doors, structural -windows installers -bespoke furniture
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Latest review:
Bathroom Fitting- 15 May 2017
We hired Inside/Outside to re-do our bathroom. New sink, bath, toilet, tiles, lower ceiling, re-hang the door and move the radiator. They were polite, honest, professional and very hard working. When they came round to quote they were noticeably more thorough and showed more attention to detail than others. Their quotes were very competitive, their work was good and they removed all the rubbish as well. They also came back afterwards to check everything was working and to deal with a couple of 'snags'. We will be using them again.
Vali colour
Rating: 5 out of 5
Extension Builder in Brondesbury
Hello my name is Vali , I have been working in the construction industry 20+ years in this time I have run a small business in Italy ,built houses in Romanian and I am currently working in London as a bricklayer .
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Latest review:
Bricklaying- 1 Oct 2019
Excellent work on budget and time
DARDANIAL LIMITED
Rating: 5 out of 5
Extension Builder in Brondesbury
Dardani. al Limited Experts in RC frame construction, deep drainage, basements, groundworks, steel fixing, refurbishments, loft conversions, brick & block work, and underpinning. Delivering quality, precision, and reliability on every project — from the ground up, Tarmac takes on all aspects of ground works, including structure, landscaping, civil engineering, and fencing
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HomeDeco
Rating: 4.9 out of 5
Extension Builder in Brondesbury
We believe that every project deserves attention to detail, quality craftsmanship, and a commitment to excellence. Whether it's construction, renovation, interior finishing, or home improvement, our goal is simple: to deliver results that exceed expectations and create spaces our clients are proud of. We are committed to completing high-quality projects on schedule and within budget while maintaining the highest standards of workmanship, safety, and reliability. We take pride in building long-lasting relationships based on trust, reliability, and customer satisfaction. Our success is measured not only by the quality of our work but also by the confidence our clients place in us. After all, happy clients become returning clients :))
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Latest review:
Extensions- 4 Feb 2019
We have had the best possible experience dealing with Home Decorating. Gin and Jon are a powerful team effectively combining Gina's client facing capabilities with Jon's immense building experience. Highly recommended!
SONIM
Rating: 5 out of 5
Extension Builder in Brondesbury
SONIM LTD is a South London–based construction and refurbishment company specialising in high-quality residential projects. We deliver loft conversions, home extensions, kitchen and bathroom renovations, flooring installation, plumbing, and full property refurbishments with a strong focus on craftsmanship, attention to detail, and reliability. Whether you're expanding your home, upgrading your kitchen or bathroom, or undertaking a complete renovation, our experienced team is committed to delivering exceptional results — on time and within budget. At SONIM LTD, we believe in clear communication, transparent pricing, and building long-term trust with our clients. Your vision is our priority.
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Latest review:
Restoration & Refurbishment- 3 Nov 2024
Ion and his team were great, they worked really hard and the final result is fantastic, we are really pleased and will use them again! Ion gave lots of helpful advice.
UTALE
Rating: 4.7 out of 5
Extension Builder in Brondesbury
UTALEE PLASTARING Drylining RENDERING General buildings
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Latest review:
Plastering- 12 Jun 2026
Great communication clear pricing and really good and effecient work. Will use again!
ArhiTERRA design and build
Rating: 5 out of 5
Extension Builder in Brondesbury
We are a family business with a dedicated team specializes in works of any size ranging from the design through to building process. Our experience is vast and we stand for fast and high quality services beeing in construction industry for over 10 years . The following services are available: -design and build of extensions and lofts, -refurbisments, -swimming pools and outdoor spaces -landscape design More details can be found on our website.
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Latest review:
Architecture- 5 May 2018
Contracted to provide options for a new garage office and storage solution. They turned up promptly and were very polite and professional. Through many discussions they ultimately offered up a very good bespoke solution for our situation and once planning is approved we will have no issue with looking to them to complete the actual build. We have had a lot of issues in the past finding reliable trades but with ArhiTERRA design and build we felt confident in their ability to both visualise and implement the build as well as follow through on their promises. I would say that for anyone considering discussing a project with them that it is worth your time to at least have a meeting with them and judge for yourself.
LDN Construction
Rating: 4.6 out of 5
Extension Builder in Brondesbury
With over 20 years of experience, we specialise in loft conversions, roofing, extensions and more. We primarily operate in Greater London, Our team possesses diverse skills and knowledge, ensuring top-quality results. We take pride in delivering exceptional customer service, professional workmanship, and thorough aftercare. Choose us for your next project and experience the best in the business.
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Latest review:
Bathroom Fitting- 28 Nov 2024
in my place, everything looks fine. but they used long screws penetrated the downstairs pipeline, which made my life very hard, intense relationship with neighbors, neighbors tries to break in. and this problem is still going on. i don't know how to fix it.
O&L Renovations
Rating: 5 out of 5
Extension Builder in Brondesbury
I've been working in Buiding all my working life. I undertake full referbs and smaller jobs. My work is to the highest standard
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Latest review:
Handyman- 3 Sep 2017
Good work, good price and done quickly without any hassle. Highly recommend Jamie and his team.
Compact Building Ltd
Rating: 4.8 out of 5
Extension Builder in Brondesbury
Compact Building LTD Renovations | Refurbishments | Plumbing – Across London From full home makeovers to small upgrades, we deliver expert results with 0% interest payment options. Make It Compact. Make It Perfect.
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Latest review:
Bathroom Fitting- 21 May 2026
Petru fitted a new shower tray. It was a complicated job due to the location of the piping. Petru was very meticulous and ensured he completed the job correctly and to a high standard.
CONSTA Construction Limited
Rating: 4.6 out of 5
Extension Builder in Brondesbury
CONSTA Ltd - small construction company based in London, and characterises in flexibility to complete various jobs . There is list of different small or awkward completed jobs in our portfolio as well as more significant projects as loft conversions, extensions, full house reconstructions, new build and Passive House construction as well.
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Latest review:
Extensions- 29 Aug 2021
Communicated well at the start with reasonable cost. work was done well but the finishing was not so great as expected. The end cost was very expensive. Charged by the hour, the team were very slow which was upsetting to see me pay for time where they sat around not doing much. Ensure to agree fixed price. Communication after job is poor, double glazing has warranty which now not being able to communicate with kostas having to pay to get things done that should be covered in warranty. Central heating give huge problems. Do not use for big jobs

4.1

Top rated Extension Builders

Our Extension Builders in Brondesbury, are rated 4.1 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 Brondesbury?

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

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

What are the hourly rates of extension builders in Brondesbury?

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

Find extension builders in Brondesbury with MyBuilder

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

Step 2: Compare different extension builders in Brondesbury

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

Step 3: Hire Brondesbury extension builders with confidence

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

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

What to ask a Brondesbury extension builder before hiring?

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

An extension builder in Brondesbury 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 Brondesbury 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 Brondesbury?

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 Brondesbury 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 Brondesbury 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 Brondesbury

Can an extension builder in Brondesbury help with planning permission?

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

Many Brondesbury 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 Brondesbury help with materials and finishes?

Yes, most extension builders in Brondesbury 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.