Extension Builders in Brentford

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 Brentford

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FKL
Rating: 5 out of 5
Extension Builder in Brentford
Hi thanks for taking the time to read my company profile, Form Construction specialise in extensions lofts basements and renovations. We strive to deliver quality workmanship. We pride ourselves on being quality tradesmen, always going the extra mile for our clients. We work with many different suppliers to ensure our clients get good value and good quality materials. If you feel we are suitable for your project please get in touch to discuss your project Many thanks John Campbell
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Latest review:
Kitchen Fitting- 3 Sep 2020
Very reliable, hard working and talented ! His quotation was incredibly reasonable too. Very grateful
Ag-Renovations
Rating: 5 out of 5
Extension Builder in Brentford
Dear all. My name is Andrzej Galka, and I am the founder of AG-Renovation Ltd, a trusted building company. We have successfully completed many projects across Richmond, Kew Gardens, Chiswick, and Teddington, specialising in house extensions, loft conversions, and full home renovations. Our clients value us for our high-quality workmanship, reliability, and transparent approach. We are proud members of the Federation of Master Builders and are TrustMark registered, ensuring every project meets the highest standards. We are also fully insured with AXA Business Insurance for your complete peace of mind. We also provide a complete, stress-free service – from initial groundwork and structure through to finishing touches. I am a Gas Safe registered engineer and fully qualified to work on hot and cold water cylinder systems, which means we can manage every aspect of your project without the need for multiple contractors. If you are planning a building project, I would be delighted to visit, discuss your requirements, and provide a detailed quotation. References and examples of our completed work are available on request. With best regards, Andrzej Galka Founder & Director AG-Renovatio
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Latest review:
Central Heating- 3 Oct 2025
Very happy and impressed with the quality of work by Andrzej. He was both efficient and considerate in his work, checking with me to make sure I was happy with the radiator position, the piping, etc. Other people would have just done whatever they wanted to complete the job quickly. Would definitely recommend to anyone looking for someone that actually cares about the details.
Noar Construction Ltd
Rating: 5 out of 5
Extension Builder in Brentford
NOAR CONSTRUCTION LTD Building &refurbishments Roof - extensions Loft conversion Carpenter Kitchen & bathroom Handyman Elektrik Gas Engineer
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Latest review:
Extensions- 23 Nov 2024
Noar Construction Ltd was one of five companies that tendered for my job, which was a like-for-like porch building in a conservatively listed building. It might look easy, but it was a very difficult job, as this had been demolished prior to contacting this company. The drawings provided were not good enough to complete the work as instructed by the council. I sent photos of the existing porch with the approved drawings. Bam! We got exactly what was there before; you cannot tell the difference, and this was done within the agreed timeframe. They were very helpful and went the extra mile to ensure it was built as per specification and within our budget. Thank you, Noar Construction Ltd. I will surely use you again for future projects and will highly recommend your services.
4 You Residential Limited
Rating: 5 out of 5
Extension Builder in Brentford
We have over 18 years of experience in residential and commercial refurbishment. We are skilled team of managers, architects, builders and craftsmen, competitively priced and flexible to suit your needs. We specialise in building basements, extensions, loft conversions and carry out full house refurbishments as well as working on smaller projects like kitchens, bathrooms, joinery and fit-out. Our team is energetic, fully insured, certified and recommended by long list of happy clients.
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Latest review:
Groundwork & Foundations- 18 Jul 2019
My wife and I have been truly impressed by Victor and Tom's quick turnaround and willingness to get the job done to an extremely high standard. Their men were friendly, efficient and tidy which is invaluable when taking on any new and daunting property project. As a result of their efficiency we are hoping to work with Victor and his team again in the coming months and would highly recommend them to anyone looking for a reliable and professional contractor.
Miftari construction ltd
Rating: 5 out of 5
Extension Builder in Brentford
Hi my name is Dritan Miftari I have worked in construction for over 20 years I started my company in 2013. I have lots of experience in construction. We do lofts, extensions, refurbishments, kitchen and bathrooms, flooring and painting and decorating. No job is to how small or to big for us. Kind regards Dritan Miftari
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Latest review:
Fantastic to work with
Takuski and The Builders Ltd
Rating: 5 out of 5
Extension Builder in Brentford
"Takuski and The Builders Ltd." is a team of professional construction workers . Our priority is to work safe and to high possible standard.
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Latest review:
Restoration & Refurbishment- 16 Feb 2018
Adam and his team did a brilliant job! My flat was in very bad condition. They gutted the whole flat and refurbished everything to a very high standard. Work performed included, new boiler and radiators installation, complete refit of bathroom and kitchen including all tiling, plumbing and electrics, new spotlights and wooden flooring throughout, new doors and skirting boards and all painting and decorating. They also arranged for all skips and rubbish clearance. I simply left the keys with Adam and he performed all work with minimum guidance. I would touch base a couple of times every week or when things needed to be discussed. He was happy to purchase most materials and provide receipts. I would highly recommend Adam and will definitely use him again for future work.
Singh builder
Rating: 5 out of 5
Extension Builder in Brentford
My first priority customer happy, once chance give me, trust my work.
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Latest review:
Bathroom Fitting- 30 Dec 2025
I have to say, i’m very pleased with my new bathroom. Singh builders has done a brilliant job and was really impressed with the professionalism, advice and support thought-out the project. I highly recommend them to anyone that is looking for a plumber
ASECO Electrical Solutions
Rating: 5 out of 5
Extension Builder in Brentford
I'm a qualified and self employed electrician with over 10 years experience in electrical industry. I specialise in all aspects of domestic and commercial installations. With me you will get high quality standard of work and reliable services at competitive price.
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Latest review:
Electrical- 29 Apr 2022
Did really great work for a fair price. Will definitely use again. Very informative and he helped get plugs in the right place
Marble Line Interiors Ltd
Rating: 5 out of 5
Extension Builder in Brentford
Whether you’re planning to redo one or two rooms, or your entire property, our experienced and highly skilled team can help. With more than 10 years of experience, we provide a range of specialists plumbers, Gas/heating engineers, bathroom fitters, painters and decorators and more services that are all always performed with a high degree of care and focused attention to detail to leave precise and smooth results.
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Latest review:
Gas Work- 26 Feb 2024
Ivan and his colleague provided a very good service at a competitive price. They completed the job on time and left the site in a tidy state. Happy to recommend Marble Line Interiors
Orland
Rating: 5 out of 5
Extension Builder in Brentford
I have been working in building industry for 16 years . I started as electrician after I finished the college. Until 2010 I was doing electrical jobs full and partly rewiring houses . In 2010 I started painting and tiling flooring, kitchen and bathroom fitting ,loft conversion and rear extensions, getting together a small team when needed. I have trade insurance and qualifications. Kind regards Orland Bogdani
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Latest review:
Bathroom Fitting- 13 Jul 2023
We honestly can’t recommend Orland highly enough. He came in mid job after we got abandoned by some shady builders, and was just fantastic. Built us a wonderful bathroom in under a week - was polite, professional, arrived early and all his work was to a very high standard. Would definitely ask him to help with future projects!
Sandhu Renovation
Rating: 4.6 out of 5
Extension Builder in Brentford
Sandhuuk77748
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Latest review:
Carpentry- 7 Dec 2025
Arrived on time, finished the job. Good work.
Rose Projects
Rating: 5 out of 5
Extension Builder in Brentford
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!
THANDI & KARTAR DEVELOPMENTS LTD
Rating: 5 out of 5
Extension Builder in Brentford
A structured and well mannered approach is applied to all our construction works we project manage. Our work ranges from extensions to full property refurbs, however we also provide additional services like helping you buy the right property or even a buy to let!
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Latest review:
Extensions- 8 May 2024
T&K immediately understood what we wanted to achieve and made beneficial changes to the architects plans. T&K were patient when we changed our minds. The quality of work including subcontractors was excellent. Snagging was fixed with alacrity. The finished project looks stunning.
W5 Construction ltd
Rating: 5 out of 5
Extension Builder in Brentford
I am Robert Kaminski, and founded W5 Construction Ltd in 2012. My team and I have several decades of experience in construction, and are specialists in helping domestic customers maximise their existing space. We are based in Ealing and cover all areas of West London. We take pride in exceeding our client's expectations, managing your project from start to finish, allowing you to have a stress free experience.
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Latest review:
Restoration & Refurbishment- 6 Aug 2020
Great job done. The guys were very hardworking and the finish is to a very high standard.
Toca Construction Ltd
Rating: 5 out of 5
Extension Builder in Brentford
Multi trade for more than 9 years family run friendly and reliable will undertake any job, any size, be it replacing a leaking tap , or undertaking complete refurbishment . We pride ourselves on providing an honest and reliable service We offer free estimate so don't hesitate to get in touch Thanks
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Latest review:
Decking- 21 May 2026
Bujar was a professional through and through, and his brother, nephew and friend who assisted on the job were skilled and very friendly to be around. He made suggestions as we went that improved the job and was very courteous, even coming by to check on a delivery when we were away for the day. Would definitely recommend.
Marcin Building Contractor
Rating: 5 out of 5
Extension Builder in Brentford
25 years experience,all building work undertake, handyman service
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Latest review:
Hard Flooring- 12 Dec 2017
Two rooms in one day. The work was done to a high standard and everything fit as it should. He left the job tidy and neat, when I walked into the room, it was if the floor had laid itself. We also hired him to install a double glazed window for us, again work done excellently and no less left

4.2

Top rated Extension Builders

Our Extension Builders in Brentford, 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 Brentford?

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

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

What are the hourly rates of extension builders in Brentford?

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

Find extension builders in Brentford with MyBuilder

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

Step 2: Compare different extension builders in Brentford

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

Step 3: Hire Brentford extension builders with confidence

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

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

What to ask a Brentford extension builder before hiring?

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

An extension builder in Brentford 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 Brentford 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 Brentford?

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 Brentford 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 Brentford 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 Brentford

Can an extension builder in Brentford help with planning permission?

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

Many Brentford 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 Brentford help with materials and finishes?

Yes, most extension builders in Brentford 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.