Extension Builders in Brentford

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (18 reviews)

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Some of our top rated extension builders in Brentford

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Peter Build
Rating: 5 out of 5
Extension Builder in Brentford
We offer professional service for all your local building requirements. With our team of professionals no job is too small or too big to handle. From Small Brickwork jobs to large extension work, we can do it. Our team of professionals have years of experience and know-how to carry out all jobs to the highest quality without charging extortionate prices.We are a small friendly local Builders with over 20 years experience!
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Latest review:
Bathroom Fitting- 5 Nov 2019
I met up with Peter, told him what needed doing and he provided a detailed quote within days. I handed over a set off keys and basically left him and his team to get on with it! This was a time restricted job, he purchased all the material and provided all the receipts. I returned a week later to find the job completed to the highest standard surpassing my expectations. I will definitely be working with Peter again in the future and I would highly recommend him.
Steve Rochford
Rating: 5 out of 5
Extension Builder in Brentford
City & Guilds served bricklayer 45 year’s experience Very neat
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Latest review:
The work consisted of a single storey extension incorporating a small utility room. Stephen's building workmanship was excellent, as was his labourer. His professionalism was first class and he was prompt and reliable. We were extremely pleased with the work and the price which he quoted us. We would highly recommend Steve Rochford.
VCKS
Rating: 5 out of 5
Extension Builder in Brentford
VCKS Professional service provided on time
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Latest review:
Tiling- 10 May 2025
Victor is excellent. Gave a competitive quote and stuck to it. Victor works quietly and thoroughly. The job was completed on time and to a high standard. I will use him again and I recommend him.
Meshi Contractors Ltd
Rating: 5 out of 5
Extension Builder in Brentford
Meshi Contractors Ltd is a family run building company specialising in residential/small commercial general construction services in all areas, including electrical and plumbing works. We have over 15 years experience in all aspects of general contracting, including project design and project management. We specialise in lofts, single/double story extensions and full home refurbishment/commercial building refurbishments, change of use in line with council regulations and electrical works. We can also help you revitalise your outdoor space, specialising as well in summer rooms/multi-functioning garages. Landscaping and garden improvement services can also be provided. We are an all in one building company, working with the community to help build a concrete future. Contact us today for an estimate!
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Latest review:
Man and his team did a fantastic job on the renovation of our Edwardian home including a new kitchen, installation of a new lavatory, new bathroom, new flooring and general refurbishment throughout. From initial meeting all the way through to completion, Man was a pleasure to deal with - he is always smiling and very happy to offer guidance on plans. The job was done to a good standard and we would definitely recommend Meshi Contractors to any of our friends and family.
Angle Construction
Rating: 4.7 out of 5
Extension Builder in Brentford
We have been in the construction business for over 15 years doing all sorts of works, from minor works to full home constructions. No job to small no job to big. We work in and around London
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Latest review:
Windows & Doors (uPVC & Metal)- 28 Jan 2026
Very unhappy with how things went with Angle Construction overall. Poor comms during the transaction was the first red flag - no communication for 2 days the moment money was sent, however afterwards received an apologetic call - parts ordered and arrived in due course. Andrei turned up, and got to work on removing the old gate, but then started shaving down the post without saying anything -we were told after that the posts were not level. Eventually he said the door would need to be cut, which we agreed to. The door and posts were both cut to fit, but massive gap left at the bottom, and only half of the door fittings and no handles were installed! In addition, where the door was cut and the wood shaved made, a lot of mess was left all over the garden furniture and patio floor. Shocked at the lack of care and professionalism. He was clearly agitated and in a rush to leave. We have a working back door, but it looks like a real botched job. Not happy, and I would not recommend.
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
GRANDON LTD
Rating: 5 out of 5
Extension Builder in Brentford
Hello! My name is Alex and I’m a professional builder we always proud for the jobs we do We provide the best service for the clients 20 years experience doing this job by my hands I like negotiating with the clients all time to find a way to do the best for the job Please for experienced and professional please do call as we Proof our trades
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Latest review:
Bathroom Fitting- 6 Jul 2024
We appointed Aleks and his team to refurbish a cloakroom, a bathroom and staircase. Aleks' approach to work is highly professional and he has a great eye for detail. He was happy to provide advice but was also very flexible to accommodate our requests. We would highly recommend hiring Grandon Ltd and wouldn't hesitate to use them again.
Mr Syed Zaidi
Rating: 5 out of 5
Extension Builder in Brentford
We carry out all types of building work to a very high standard. We pride ourselves on our friendly team and can do attitude. We will treat your home Like ours and make every effort to you updated before, during and after the works. We are extremely hard working and always give 100% on each job we undertake.
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Latest review:
Decking- 6 Sep 2026
Syed and team did a fantastic job replacing our decking. I had a garden party scheduled and they went above and beyond to ensure they finished the job on time for it.
W4 Builders
Rating: 5 out of 5
Extension Builder in Brentford
We do all kind of building services in west London. We do painting, decorating as well as plumbing and electrics. We do bathrooms and house extensions and full property refurbishments.
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Latest review:
Robert Biegala has done laminate flooring, decorating and other tasks in my office in Farringdon. It was pleasure to work with Robert as he is a reliable, responsible and trustworthy person. His communication was consistent and reassuring. Robert is proactive and finds solution to any problems which arise during works. I would highly recommend his services.
Constructum contracts limited
Rating: 5 out of 5
Extension Builder in Brentford
Founded in Twickenham by lifelong friends Alex and Steven, Constructum Contracts Ltd has been delivering high-quality construction and bespoke craftsmanship across Surrey and South West London since 2024. Our combined expertise spans building surveying, project management, general construction and high-end bespoke carpentry — giving clients the confidence of both technical knowledge and practical experience on every project. Steven began his career after earning a Diploma in Construction from Richmond College, working for a respected local builder specialising in loft conversions, extensions and residential renovations throughout the Richmond upon Thames area. While gaining hands-on site experience, he completed a BSc in Building Surveying at Nottingham Trent University. Following graduation, Steven worked for a multi-disciplinary building consultancy in London as a Building Surveyor, Contract Administrator and Project Manager. His portfolio ranged from residential apartment blocks to commercial properties, with particular expertise in the preservation and restoration of historic buildings in Central London. Most recently, he worked in Australia as a private Building Control Surveyor on new-build developments, before returning to the UK to bring his technical knowledge and project leadership back to clients in SW London and Surrey. Alex also began his studies at Richmond College, developing a strong trade foundation in carpentry. Coming from a family of plumbers and electricians, he was immersed in the construction industry from an early age. Over the years, he has refined his skills across multiple trades, including plumbing, electrical works, bespoke cabinetry and kitchen installations. With a particular focus on high-end bespoke carpentry, Alex has worked alongside some of Surrey’s leading cabinetry, wardrobe and kitchen installation companies. He now brings that craftsmanship and attention to detail to every Constructum project. At Constructum Contracts Ltd, we combine professional oversight with skilled workmanship. Whether you require building surveying services, structural alterations, extensions, renovations or bespoke carpentry, we pride ourselves on reliability, transparency and delivering exceptional results with the highest standards of workmanship. We look forward to seeing how we can assist with your project.
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Latest review:
Joinery & Cabinet Making- 9 Jun 2024
Alex has made a great job of our bedroom cupboard. He was reliable, punctual, polite, worked really hard, and cleared up afterwards. The work is of an excellent standard. Would definitely recommend!
ANDREES UTILITIES LTD
Rating: 5 out of 5
Extension Builder in Brentford
We provide a complete range of high-quality building and home improvement services, delivering reliable workmanship and attention to detail on every project. Whether you're renovating a single room or transforming your entire property, we are committed to completing every job to the highest standards. Our services include: Bathroom design, renovation, and installation Kitchen fitting and complete kitchen refurbishments House extensions Loft conversions Driveway and paving installation Interior and exterior painting and decorating Roofing repairs, replacements, and maintenance Certified electrical installations and repairs Professional plumbing services, including installations and repairs From the initial consultation through to project completion, we focus on clear communication, quality craftsmanship, and customer satisfaction. We work with homeowners and businesses, delivering projects on time, within budget, and in full compliance with current building regulations. No matter the size of the project, our goal is to create durable, functional, and beautifully finished spaces that add value to your property. Contact us today for a free, no-obligation quotation and let us help bring your vision to life.
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Latest review:
Bathroom Fitting- 13 Sep 2026
From the start there was clear transparency on what needs to be done at what price. Very professional, excellent finish to the job, will be hiring for all my future work. Went above and beyond, they have passion in what they do. You won't regret hiring them.
Bischell Construction Limited
Rating: 4.9 out of 5
Extension Builder in Brentford
Design & Build projects that squeeze more out of every pound spent. We’ll deliver an outcome for you that looks a lot more expensive than it really is. It will be tailored to your lifestyle, designed for your senses and fine-tuned to minimise lifetime costs. If you have an eye on value, or looking for maximum ROI, we’ll deliver more for less. It’s about smart design and construction, so the result gives you more performance, better quality of life and a stronger return from your budget.
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Latest review:
Architecture- 27 Jul 2026
Very friendly, professional and trustworthy. Really took his time when he came to assess my walls and gave a very detailed explanation and highlighted all risks. Good communication, I would use him again
Pavlito Construction Ltd
Rating: 5 out of 5
Extension Builder in Brentford
Pavlito Construction Ltd is a family run business with over 15 years of international experience in construction and general building (Germany, Italy, Poland and UK). We have worked extremely hard in order to establish a well respected name and reputation.
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Latest review:
Restoration & Refurbishment- 15 Feb 2016
Pawel and his team modernised our two bedroom house from top to bottom. They installed central heating in every room, they removed our old warm air heating, made an open plan for the kitchen and living room area, installed new bathroom and kitchen units and did the tiling too, they updated our electrics and sockets and also plastered and painted the walls and fitted our wooden flooring for downstairs. The job was completed within 12 weeks. We were very happy with the modernisation, our home looks completely different and has a new modern fresh feel. We will definately be using Pawel and his team for future jobs. Thanks again Khalima
DRYPSIAK
Rating: 4.9 out of 5
Extension Builder in Brentford
Hello everybody! My name is Viktor. I am professional carpenter and joiner. I have big experience in first fix and second fix carpentry and joinery jobs. I install doors, skirtings, architraves, make partitions, and all jobs wiht wood. I make lofts conversion. I have experience 7 yers in carpentery and joinery, and lofts conversion. I also have big experience in bricklaing jobs, and in extention jobs.
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Latest review:
Carpentry- 21 Dec 2025
Viktor and Michael are very friendly and professional. They were on time and the price quoted was the price I paid. I hired them to install architraves around 4 internal doors and I am very happy with their work. They made sure I was happy with the work before they left and they took time to clean up after as well. They take real pride in their work as all the joints are perfectly aligned and all the nails are sunk in to the wood so I can apply filler afterwards and paint. Viktor also made a quick trip to Screwfix to ensure he used the strongest adhesive to fix the architraves to tiles in the bathroom. I will hire Viktor and Michael in the future to refurbish my stairs and install wall panelling on the stairs wall. I highly recommend them for their honest and professional work.
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:
Restoration & Refurbishment- 1 Jul 2026
You will be happily surprised with the approach of Andrew. He is frank with his information, he is flexible to consider costs, neighbours, timing, options to solve a problem or complete the job. His crew is tidy and courteous. He estimates job time and stays to meet tit. He is experienced and practical. I want to use him for every job!
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

3.9

Top rated Extension Builders

Our Extension Builders in Brentford, are rated 3.9 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 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.