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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Howe Structural Consultants Limited
No reviews yet
Extension Builder in Brentwood
At Howe Structural Consultant we provide drawings for residential internal alterations. Typically we will be called to site to carry out a full dimension survey and produce a set of drawings along with structural calculations for the alterations. The builder will then work from these drawings to meet the clients requirements. The calculations can be sent to the local authority for approval. We have over 10 years experience of design and drawings.
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DEC Renovations
Rating: 3 out of 5
Extension Builder in Brentwood
Carpenter with 20 years plus experience. Small extensions, shop fitting, all first fix and second fix carpentry. Bespoke kitchens and furniture. Design and install bathrooms. Complete house refurbishment. Garden buildings patio and decking.
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Latest review:
Extensions- 21 Dec 2017
Dishonest from the start. Every excuse in the builders handbook (and new ones). Lazy (they like to work 10-1 and never a full week). Never finished the 2 month project after 6 months - walked away
Huseco Limited
Rating: 3.7 out of 5
Extension Builder in Brentwood
HUSECO Limited is a well-established family business specialising in domestic renovation and construction projects. Our portfolio of skills also includes architectural design, interior design, and planning, which allows for stylish renovations, extensions, lofts, and modern living spaces. We have a loyal team of highly skilled builders, and the dedicated project manager personally oversees all our projects
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Latest review:
Extensions- 14 Sep 2025
How long should a 3m extension take if drawings were approved in April, the conservatory was demolished, the foundation completed, and the steel structure was already on site by May.?
Florin
Rating: 5 out of 5
Extension Builder in Brentwood
I’ve got over 10 years experience in roofing industry,I’m a professional person,I’m not doing tipe of work that I never done it before,I don’t leave any jobs unfinished.I have done several roofing jobs for different companies base in London.
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Latest review:
Roofing (Pitched)- 29 Nov 2022
Florin and his team did a very good job fitting a skylight and rubber roof. Communication was very good and the standard of workmanship and overall finish were excellent. I would strongly recommend him
Bespoke Builds by JFN
No reviews yet
Extension Builder in Brentwood
Bespoke Builds by JFN delivers comprehensive building and home improvement services, specialising in loft conversions, home extensions, kitchens, and bathrooms. From full renovations to day-to-day maintenance and carpentry, we manage projects with precision, transparency, and a commitment to exceptional workmanship. We take pride in delivering reliable service, smooth project management, and quality finishes designed to stand the test of time. Your space, built better
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Joni building services
Rating: 5 out of 5
Extension Builder in Brentwood
We are family run with over decade of experience on businesses we do full bathroom refurbishment full house refurbishment , repairs , maintenance,etc
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Latest review:
Bathroom Fitting- 2 Mar 2026
I can’t recommend him highly enough, in just three days, he identified and resolved my bathroom leak that could easily have become a much bigger issue. He took the time to thoroughly investigate where the water was coming from, clearly explained his findings and advised on the most sensible next steps before carrying out the work. From start to finish, his work ethic was exceptional. He arrived promptly at 8am every day and worked through until 6:00pm without a single complaint, no matter how demanding or time-consuming the job became. His efficiency was impressive but what stood out even more was the quality of the finish - the bathroom now looks brand new again. Professional, hardworking and meticulous in his standards, he delivered outstanding results in a very short timeframe. I wouldn’t hesitate to use him again or recommend him to anyone needing reliable, high-quality building work
ANACOND LTD
Rating: 5 out of 5
Extension Builder in Brentwood
Throughout the years in construction my father has gathered well balanced team with broad range of experience in every aspect of the job. After acquiring my engineering degree and some experience elsewhere, I re-joined my father once again to provide the service we are both proud of. Our background and experience in construction, design and engineering allows us to provide our clients with high quality service and ensure smooth work-flow of each project. Attention to detail is the key!
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Latest review:
Ground floor rear extension and Loft conversion. First and Second fix works including drainage, structural (block work, wood work and steel work) electrical, plumbing, plastering and tiling. All works completed to a very high standard, we found Arnolda's and his team very helpful, thoughtful and pro-active nothing seemed to be too much trouble for him, we are more than happy with AnA's Construction Developments.
BrownBricks Construction
No reviews yet
Extension Builder in Brentwood
"Welcome to Brown Bricks Constructions, your local builders with a witty touch! From painting and decorating to handyman work and everything needed within the house, we've got you covered. With our skilled craftsmen and friendly approach, we turn your house into a home. No task is too big or small for us – whether it's fixing a leaky faucet or transforming your space with a fresh coat of paint, we handle it all with precision and flair. Trust Brown Bricks Constructions for quality workmanship, attention to detail, and a touch of local charm. Let's build something wonderful together!"
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BE-O INTERIOR DESIGN AND CONSULTANCY
No reviews yet
Extension Builder in Brentwood
Be-o Design, Construction, and Consultancy prime intention is to provide cost-effective, quality design & build to all construction sectors throughout the UK. We have been thriving as a successful architectural, structural and MEP design, construction, and consultancy offering exciting and innovative solutions to a wide range of commercial, residential, and private projects. We have a hands-on approach and a commitment to simplicity, quality, functionality, and attention to detail.
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KEVIN CONSTRUCTION SOLUTIONS LIMITED
Rating: 5 out of 5
Extension Builder in Brentwood
Kevin Construction is a London-based, well-organised construction company specialising in large-scale developments alongside leading UK firms. We offer a full suite of services—from extensions and conversions to structural alterations and landscaping. With a dedicated team, digital management tools, and a focus on quality, we guide every project from planning to successful completion.
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Latest review:
Fencing- 13 May 2026
Kevin turned up on time and did a solid job on my fence. Would use again
S J Chester And Sons Limited
Rating: 5 out of 5
Extension Builder in Brentwood
We are a small run family business that covers all aspects of domestic and commercial building, from groundwork, small garden walls to extensions and new builds. We can project manage your job from start to finish including building control drawings, planning submissions and applications all the way up to the signing off of your project.
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Latest review:
Bricklaying- 18 Apr 2021
I am mate Stuart first time and I am a developer Very nice Understanding person They turn up on time every morning they done a beautiful job I will recommend them Stuart is very kind and always smiles I am very happy with the job and timescale Stephen is a nice person And they have very kind Staff they always clean up and leave the building site tidy and clean my job is going very fine and I will recommend Stuart and Stephen well done boys I am really happy for your patience and your understanding I will always do business and they’re kind people I like working with Stuart he really understands what Job needs thank you very much again I cannot wait to see the guys on the new jobs
G&B Welding
No reviews yet
Extension Builder in Brentwood
Welder Fabrication steel work for extension house,building garage workshop…!
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Design Spec Ltd
New on MyBuilder
Extension Builder in Brentwood
Design Spec Ltd is an established architectural design practice specialising in residential projects across Southend-on-Sea, London and the wider South-East. Founded in 2014, we have delivered hundreds of successful projects including house extensions, loft conversions, internal reconfigurations, garage conversions and new build homes. Our team prepares planning permission drawings, building regulations packages and detailed technical construction drawings. We operate on a fixed fee basis, providing clear and transparent pricing from the outset. Every project is managed on a 1-to-1 basis, ensuring consistent communication and a structured design process from concept through to approval. Our services include: • House extension design (single and double storey) • Loft conversion design • Planning applications and submissions • Building regulations drawings • Technical design packages for construction • Residential new build design If this sounds like something that would benefit you, then reach out to the Design Spec team today.
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RMT design and build ltd
No reviews yet
Extension Builder in Brentwood
RMT design and build ltd is fast growing construction company who undertake design build and maintenance. The company has been own by construction professional who has 20 year experience in construction and team of Structural Engineers.
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A.K construction
No reviews yet
Extension Builder in Brentwood
Hi i am skilled builder I doo all jobs Extension Loft Electric Plumbing Fencing Carpentry
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Emanuel. Sh
Rating: 5 out of 5
Extension Builder in Brentwood
Hello everyone My name is Emanuel. I’ve used this app for a long time as well as a few other apps. I’m a builder for 8 years now. Me and my team can do everything regarding building work such as new builds, extensions, loft conversions, sheds, patio, fencing, roofs, garden work, plasterboard , skimming, painting,everything inside the house and out If you see me as the person to work in your house, I’m more then happy to help Thank you
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Latest review:
Bricklaying- 15 Feb 2023
Emanuel was hired because he seemed knowledgeable about his trade and came across as a confident tradesman. He was punctual and worked with professionalism. He offered to advise where his input was needed. Overall I am pleased with his work and will hire him again or recommend him to family and friends.

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.