Extension Builders in Brentwood

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.4 (14 reviews)

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Some of our top rated extension builders in Brentwood

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Studio Charrette Property Limited
Sponsored
Rating: 1 out of 5
Extension Builder in Brentwood
Studio Charrette Limited is a trusted provider of expert building and planning services. We proudly support homeowners in Gravesham, Dartford, Medway, Chatham, Gillingham, Strood, Rochester, and Maidstone. Specializing in high-quality construction and planning solutions, we are committed to delivering professional expertise tailored to each project’s unique needs. As part of our service, we offer planning, drawings, design, building regulations, and structural calculations, ensuring all necessary protections are in place if required. VIEW OUR BROCHURES
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Latest review:
Extensions- 7 May 2026
They did not do anything after making a payment of £1190
Skilled carpentry ltd
Rating: 4.9 out of 5
Extension Builder in Brentwood
I am hardworking person, passionate off the job I am doing. You won't regret choosing me. I am working in construction for more then 10 years. I have attached few pictures of the jobs I have done, just few of them, Please have a look.
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Latest review:
Carpentry- 7 Jun 2026
Excellent craftsmanship, very happy with my stairs. Did extra smaller jobs for me too, which helped me out massively. Much appreciated.
Bricklayer
Rating: 5 out of 5
Extension Builder in Brentwood
Hi. I am a bricklayer for 15 years and more very professional and more.
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Latest review:
Bricklaying- 25 Apr 2026
Agron is very pleasant to work with,polite and hard working. He got our job done as promised and responded very quickly to our query and based on our positive experience,i wholeheartedly recommend Agron for your bricklaying needs.
TA Cannon Building and Maintenance
Rating: 5 out of 5
Extension Builder in Brentwood
I have been in the business for over 20 years. I have a great team along side of me and an impressive portfolio to show work I have completed.
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Latest review:
Groundwork & Foundations- 17 Jul 2024
Tommy had great communication. Was happy to change plans as the project developed and completed the job on time and budget. Would recommend.
J&N Contractors
Rating: 5 out of 5
Extension Builder in Brentwood
We are a family run building company , originally established in the East End of London back in 1971 , now operating from Essex, covering the whole of London and Essex. Approved by trading standards with a £5million public liability insurance.
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Latest review:
Extensions- 10 Oct 2024
Great job done under difficult circumstances (all through the toughest part of the pandemic). Great follow up/after-care service to make any issues or problems right. Great bunch of people to work with that kept me informed and up-to-date. Didn't ask for huge amounts of money up-front, just as they went along. Would highly recommend.
Kameron Whiting
Rating: 4.8 out of 5
Extension Builder in Brentwood
Whiting Building Company Specialise in Roofing. If your in need of a Roof Repair or Replacement and you are worried about getting a Cowboy that takes your money and doesn’t fix the problem. 🤠 Well worry No more, as we are the best in the Business and we will solve the issue and show you the evidence after to prove it. 📸 But we don’t just stop there we do so much more without dropping our high standards. 👌🏼 So what are you waiting for…👇🏼 Get yourself a Free Quote Now!!! www whitingbuild com ☝🏼☝🏼☝🏼☝🏼☝🏼☝🏼☝🏼☝🏼
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Latest review:
Bricklaying- 18 Mar 2023
Kameron was great. Will definitely use him again.
Bush Builders (Essex) Ltd
Rating: 5 out of 5
Extension Builder in Brentwood
Local builders to Brentwood and the surrounding areas. We Have over 25years experience in the trades. We specialise in extensions, refurbs new bathrooms and kitchens, all aspects of groundwork. No job too big or small. We employ all tradesmen including : General Builders Carpenters Bricklayers Electricians Gas Safe Plumbers Tilers Plasterers Painters and decorators
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Latest review:
Bush builders did a great job replacing a ceiling in our house along with adding extra joists and insulating. Their professionalism was evident from our initial meeting which was further backed up with the competitive quote they provided and the extra care they took to make sure we had the right type of sheep's wool insulation for the job. It only took a few days to do the whole thing and they left the room as clean as possible after such a messy job.
Spear Construction Limited
Rating: 5 out of 5
Extension Builder in Brentwood
We are Spear Construction Limited .. we strive to be the best in both value and quality! Supplying our clients with the best service possible! We cover all aspects of construction… No job too small or big! - Extensions - loft conversions - Kitchens - Garden rooms
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Latest review:
Carpentry- 18 Nov 2024
Did a great job, thanks Dave!
JUDD PLASTERING
Rating: 5 out of 5
Extension Builder in Brentwood
Welcome to Judd Plastering - We specialise in all aspects of Plastering and Rendering whilst providing a friendly and reliable service to all our customers. We have a fresh enthusiastic approach to all aspects of the job, whether it would be a small ceiling to a full house. We are fully qualified and insured covering all of London and Essex.
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Latest review:
Plastering- 4 May 2019
Very pleased with the work, did 2 ceilings, competitively priced and in our case was able to get the work done in less than 1 week from posting the initial advert on here! Would use again in the future.
Elliotts Construction ltd
Rating: 5 out of 5
Extension Builder in Brentwood
Elliotts construction is a family run business based in Essex. We provide all aspects of domestic building work to a high quality standard in and around Essex.
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Latest review:
Bricklaying- 17 Aug 2019
Excellent finish, very tidy and clean. We are really pleased with the end result. Would recommend to anyone requiring brick work.
MGB SOLUTIONS LTD
Rating: 4.4 out of 5
Extension Builder in Brentwood
Professional Kitchen Fitter with 20 years experience.
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Latest review:
Kitchen Fitting- 18 Nov 2025
Original timeline stretched a bit due to his other jobs but this was fine. Mario started work early and finished early which suited us. He came to visit and we agreed a price at the start and he stuck to it even when he realised some additional plumbing would be needed. He was honest about some accidental damage. Attention to detail is good and he has all the kit. I would have given 5 stars- he's a proper professional and I enjoyed working with him. 3 stars only because as soon as the work was done he became incommunicado (I messaged a week later to ask how to lift door which had dropped down a few mm on fridge). The warranty advertised is one of the reasons I went with MGB which was £200 more expensive than contenders so this was disappointing. I would have asked him to do my parents' new kitchen too otherwise.
Masterbuild & Maintenance South East Ltd
Rating: 5 out of 5
Extension Builder in Brentwood
We specialise in all aspects of building work & maintenance work & aim to complete works to the highest of standards along with completion dates.We pride ourselves on our reliability and extensive knowledge of the trade. We deliver a wide range of building services & cater to both the domestic and commercial build. All to include New builds, Extensions, Loft conversions, We aim to achieve high quality workmanship and trust within working relations between ourselves and the client.
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Latest review:
Loft Conversion- 23 Nov 2021
We instructed Masterbuild & Maintenance to undertake a loft conversion and side extension to our bungalow in the spring of 2021. Dan and his team worked tirelessly to ensure that we were happy with every stage of the build and it was never too much for any of them to make modifications to get the desired result. They were hardworking, diligent and genuinely cared about their work which shows in the quality of their workmanship and the various trades employed. Dan’s team worked well together and were on-site every day for the 6 month build. We thoroughly enjoyed working with them on the project and can honestly say that we couldn’t have imagined any other builders doing the work. We are over the moon with the end result and receive so many wonderful comments from people about the job. We would absolutely recommend Dan and his team to undertake any building project and cannot commend their work highly enough.
Morkus Carpentry
Rating: 5 out of 5
Extension Builder in Brentwood
Welcome to my profile. It's obvious that one of the biggest fears of yours is that you end up with a tradesmen that will be a cowboy-builder, and it's fine to worry about that. I'm in this business for quite long time and I met too many of them/fixed the mess they made. My feedback will prove you that I'm not one of them, I love what I do and for me the best thing is to see a happy customer after I finished my project.
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Latest review:
Kitchen Fitting- 28 Sep 2018
Very clean and tidy worker, also very careful and particular in his work. We found him to be very approachable and respectful, so we felt happy to leave him to complete his tasks. We would have no hesitation in inviting him back to do further work.
Trevor chamberlain
Rating: 5 out of 5
Extension Builder in Brentwood
Hi im Trevor Chamberlain im a qualified and insured builder and Landscaper with over 25 years of experience in Essex and surrounding areas. Key Services: • Patios • Driveways • Brickwork • Extensions • Turfing • Fencing I pride myself on being reliable, tidy, and transparent. Check my gallery for photos of my recent work Ill look forward to working with you
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Latest review:
Bricklaying- 29 Mar 2026
Trevor is a true professional. The paving work was completed beautifully and to an exceptionally high standard. I really appreciate the care he took with the design, as well as the time and attention he dedicated to delivering such a great result.
Refurbish & maintenances
Rating: 5 out of 5
Extension Builder in Brentwood
Hi there, my name is Sokol I’m I builder, I do this work for over 10 years and i have a lot of experience on painting kitchens bathrooms,tiles,floors,doors roof works, loft conversion and a lot more other things.
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Latest review:
Carpentry- 12 Apr 2026
I initially hired them to build a stud wall and box in some pipes, and I was really impressed with both their work and attitude. They were professional throughout, turned up on time, and completed everything to a high standard. Communication was very easy—they were clear, responsive, and happy to answer any questions I had. After seeing the quality of the work, I asked them to take on a few additional jobs, such as painting, fitting lights, trimming doors and much more, which they were more than willing to do. They handled the extra tasks efficiently and without any fuss, and everything was completed quickly. Overall, a reliable, skilled, and easy-to-work-with builder. I would definitely recommend them.
Steve Holland
Rating: 5 out of 5
Extension Builder in Brentwood
I am a highly skilled and professional builder, I have been bricklaying for 22 years and served a 3 year apprenticeship. I have a great deal of experience in all aspects of building work and although bricklaying is my main trade I'm a skilled multi trader and have built many extensions/houses.
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Latest review:
Groundwork & Foundations- 5 Feb 2017
good job done ...would use again
WBS Builders
Rating: 5 out of 5
Extension Builder in Brentwood
40 years experience, ALL TRADES covered, no subcontractors, no headaches. New kitchens, including quartz worktops, wet-rooms, extensions. All alteration and improvement works...plastering, carpentry, brickwork, tiling, flooring, structural works, plumbing etc **SPECIALIST in rectification of poor work from previous contractors. Problems solved, here to help. 3 years warranty specialist for a major national retailer of kitchens/bathrooms (u can do it) rectifying where others had failed.
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Latest review:
Carpentry- 10 Jun 2024
Prompt, efficient and professional. Carried out all works to a very high standard - Many thanks!

4.4

Top rated Extension Builders

Our Extension Builders in Brentwood, are rated 4.4 out of 5 based on 14 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Brentwood?

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

Find extension builders in Brentwood with MyBuilder

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

Step 2: Compare different extension builders in Brentwood

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

Step 3: Hire Brentwood extension builders with confidence

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

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

What to ask a Brentwood extension builder before hiring?

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

An extension builder in Brentwood 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 Brentwood 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 Brentwood?

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 Brentwood 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 Brentwood 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 Brentwood

Can an extension builder in Brentwood help with planning permission?

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

Many Brentwood 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 Brentwood help with materials and finishes?

Yes, most extension builders in Brentwood 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.