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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BWB Builders
Rating: 5 out of 5
Extension Builder in Brentwood
We specialize is all types of brickwork and landscaping, From garden walls to extensions, Patio’s/Steps/Repointing/Brick Resoration/Demoltion/Damp Proofing and much more. We take pride in are work and customer satisfaction is are number 1 priority. Every job is completed to the very highest standard to leave you with a professional job. No job too big or small. Get in touch for free quotations. Thanks
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Latest review:
Bricklaying- 9 Mar 2026
Ben was great at doing our job, he kept me updated evry day from start to finish and matched the brickwork exactly to what was already there. Great service and definately kneww what he was doing - thanks Ben for a great job...
MINDA'S BUILDERS LTD
Rating: 5 out of 5
Extension Builder in Brentwood
We have fully equiped vans and all right tools,knowledge and expierience. We are able to undertake all general building work, and complete it on highest standards.We can source, advice and deliver ALL necessary materials. Our priorities are;QUALITY, RESPECT TO OUR CLIENTS HOME
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Latest review:
Bathroom Fitting- 23 Nov 2024
The building company were very professional, their work was of a high standard, and they carried out a great job. I was fully satisfied with the end Result, and I would recommend their services. I will definitely be using them again in the future.
BRT Engineering Limited
Rating: 5 out of 5
Extension Builder in Brentwood
We specialize in high-quality refurbishments, as well as exterior and interior construction services. With extensive experience in the industry, we offer a comprehensive range of solutions for building and property maintenance. Our expert team is dedicated to delivering exceptional craftsmanship and attention to detail in every project, ensuring your spaces are functional, durable, and aesthetically pleasing
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Latest review:
Bathroom Fitting- 6 Dec 2024
Very professional and good eye for detail. Have done good job on the cloak room renovation.
N.K carpentry
Rating: 5 out of 5
Extension Builder in Brentwood
NK Carpentry At NK Carpentry, we bring over 20 years of professional experience to every project, ensuring the highest level of detail and craftsmanship in all aspects of carpentry, joinery, and handyman services. Our fully qualified team specializes in: - Installing doors and fire doors - Kitchen fitting - Crafting bespoke wardrobes and cabinets - Building stud walls - Laying all types of flooring - Constructing timber roofs - Handling various handyman tasks - Performing any other carpentry works As a company owner, I take pride in leading a team that is fully insured and committed to excellence. Our strong labor connections and excellent client relationships ensure projects run smoothly, resulting in repeat business and satisfied customers. Contact us today to discuss how we can bring your carpentry and handyman projects to life with precision and care.
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Latest review:
Handyman- 20 Nov 2022
Excellent, arrived on time. Very professional
Addon Construction
Rating: 4.6 out of 5
Extension Builder in Brentwood
Addon Construction is a renovation company specialising in extensions, loft conversions, outbuildings, garage conversions and general building from foundations to finish.
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Latest review:
Fencing- 22 Mar 2022
Good on price, turned the job around quickly. Very efficient and helpful. Pleasant manner and friendly. Cleared up well when finished. Recommended
Baran Bay LTD
Rating: 5 out of 5
Extension Builder in Brentwood
At Baran Bay LTD, based in East London, we specialise in turning your vision into reality. Whether you're dreaming of a stunning side or rear extension, a spacious loft conversion, or a beautifully renovated kitchen or bathroom, our expert team is here to help. We offer: - Side and Rear Extensions: Create more space for your family to grow. - Loft Conversions: Make the most of your home’s potential with an elegant new loft. - Exterior Rendering: Enhance curb appeal and protect your property. - Interior Plastering: Achieve flawless finishes for a polished look. - Kitchen Fitting: Design and install your dream kitchen. - Bathroom Renovations: Transform your bathroom into a serene sanctuary. With a commitment to quality, attention to detail, and customer satisfaction, we deliver projects that exceed expectations. Let us help you make your home the perfect place to live.
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Latest review:
Okz and the team were amazing throughout my renovation. The work was done at the highest standard for a fair price. I had multiple quotes and builders who didnt match the quality I wanted, as well as communication with customer. Okz and the team got 1 month of work done in 16 days. They cleaned up very well, as my house is mid terrace. Shed was rebuilt into a proper room Loft boards put down Fibre glass roof (extension and shed) Drainage redone with channels Under stairs custom solution done
PBC Interior Design and Build
Rating: 5 out of 5
Extension Builder in Brentwood
Choosing the right contractor can be a minefield if your project needs specialist skills or a little extra care. As an established building company with 42 years trading experience we have gained an enviable reputation for personal service quality of workmanship and attention to detail.
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Latest review:
Extensions- 17 Nov 2016
Geoff and his men did a fantastic job. They were all very professional but also really friendly and helpful. They made sure we had, as little disturbance as possible whilst the job was going on which was great. Nothing was too much bother for them and I wouldn't hesitate recommending them to others.
CP Construction
Rating: 5 out of 5
Extension Builder in Brentwood
CP Construction have over 20 years experience in the building industry. We are able to carry out the smallest of projects to the largest - interior or exterior. All work is carried out to a very high standard. We always ensure 100% customer satisfaction.
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Latest review:
Groundwork & Foundations- 5 Nov 2013
Great service. Quick turnaround.
RIGHTBUILD Building Solutions
Rating: 5 out of 5
Extension Builder in Brentwood
We do all types of building work. New build, Refurbishment, Extensions, Loft conversion, Electrical, Plumbing, Bathrooms, Kitchen fitting, Decorating
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Latest review:
Extensions- 21 Nov 2022
very good ,highly recommended,affordable price,and friendly advise.
Johny the Builder
Rating: 5 out of 5
Extension Builder in Brentwood
PROFESSIONAL BUILDERS. Johny The Builder Ltd are Building Contractors based in Romford, Essex. We undertake commercial and domestic Refurbishments, Roofing, Loft conversions, Brickwork, Extensions, Basements and new building projects. We make your House a Home
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Latest review:
Extensions- 28 Sep 2018
Johnny was very nice to deal with. When there were problems they were quick to find ways to rectify them. They started at short notice& finished on time which I was very impressive. We got a no. of quotes,Johnny was middle of the range but with a better level of service than others. Johnny was very open about when things might cost more &gave us the option if we wanted to proceed. A few things to note: -this was our 1st experience of any building work &we should have remembered they are builders, not designers -we both work long hours &so most days didn't see the team to get an update or brief them. This meant a few things were missed or miscommunicated - while most of the team were lovely the electrician used was horrible to deal with. He got very cross about requested changes, didn't deliver everything requested &just did silly things like putting in a light switch with 2buttons where there was only one Light or hanging lights incredibly low when we had given measurements of where we wanted them - we got Johnny's team to build some extra storage for us which on the whole was fine but some things weren't centred or for example the wine rack they built was wonky Overall, it was a good experience and we would recommend them but would suggest be home to oversee the work more than once a week (must be true of any building work!) and get your own electrician. Very happy to talk to people and give references-the house looks great now.
HURRICANE CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Brentwood
Essex based building company dealing with renovations, extensions, new builds and commercial building projects - as well as carpentry contracting, kitchen fitting, all general building requirements.
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Latest review:
Extensions- 26 Jan 2023
From first meeting Andy I got a good feeling, turned up when he said he would to view the job, provided an estimate very quickly too, based on the initial drawings. Once the final quote was agreed, (after structural calculations) other than additional works that were required (outside of Andy’s control) there was no overrun at all. All this during a time of hugely increasing prices. Throughout the build they used good quality materials and didn’t try to reduce his costs, right down to the paint upon decoration. Offered help and advice on other parts of the build that I was taking on myself, and we are very happy with the finished extension. There was an overrun on proposed completion date, but Andy tried to keep me updated throughout, I also have no concern should I ever need to call Andy back for any issues, but don’t expect that to be needed. Thanks Andy and team.
MODEFAST LTD
Rating: 4.9 out of 5
Extension Builder in Brentwood
I’m a leading Paving Contractor in the East London area. I began working for myself in 2014 and have developed extensive knowledge and experience in a wide range of areas. No matter why you hire me, I’m committed to making sure I give 100 percent to each job I take on. Contact me to set up a no-obligation consultation today.
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Latest review:
Landscaping- 26 Nov 2025
Great job would definitely recommend
Atlant Construction Ltd
Rating: 5 out of 5
Extension Builder in Brentwood
ATLANT is part of a group of construction companies working in the High-End residential sector throughout London & the South East. Our projects include: New-Build Bespoke Houses / Small Developments / New Basements / Large Residential Extensions / Significant Refurbishments / with a value from £100k up to £2 million -- Our main aim at ATLANT is to combine the creativity of design with the practicality of construction to build unique and special homes.
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Latest review:
New Builds- 22 Jan 2021
Fantastic job on time and well within budget
mds construction
Rating: 5 out of 5
Extension Builder in Brentwood
An established bricklaying business offering all aspects of bricklaying services in and around London and the south east areas. We are reliable,friendly, professionals that take pride in our work and guarantee jobs to the highest standards.
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Latest review:
Bricklaying- 6 Sep 2021
Mark arrived on time and did an excellent job for us. Cleaned up well, and was very polite and courteous throughout. I would highly recommend Mark to anyone looking for a good builder to complete their project at a very reasonable price. Thanks again Mark.
FMbuildersuk
Rating: 5 out of 5
Extension Builder in Brentwood
We have been in the building trade for over +10 years. We do all aspects of work from interior to exterior work. We have a team that can help you with the work that is needed. We carry our loft conversations, extensions, painting & decorating work and also driveway services. Please find our pictures of work that has been carried out in the last few years to a high standard. We are a team that want to help and complete work to the BEST for our customers.
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Latest review:
The whole team that worked on the refurbishment, which included the electrician, plumber, painter/decorator and plasterer were very professional, hard working and made sure the work was completed on time. i will definitely them again.
brickfields construction
Rating: 5 out of 5
Extension Builder in Brentwood
Welcome to Brickfields Construction – Your trusted builder based in Essex. At Brickfields we pride ourselves on delivering reliable, high-quality building, renovation and landscaping services you can depend on. We are a highly recommended family run business with over 30 years experience With a reputation built on trust, transparency, and craftsmanship, our team works closely with you to bring your vision to life. Whether it’s home improvements, new builds, extensions, renovations, landscaping or larger projects, we guarantee professional service and results that stand the test of time.
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Latest review:
The best construction company for custom home building. Trust Brickfields. They were really helpful from day one and very easy to work with. They provide reliable construction services at competitive prices. I am highly impressed by their on-time project completion, very impressed with their quality craftsmanship. The entire job went very well, and the team are very courteous and professional, with attention to detail. I loved how the team behaved and listened to all my requirements. They finished the work within the given timeframe without compromising quality. So, anyone looking to have work done, contact Brickfields

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.