Extension builders in Chelmsford

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.4 (9 reviews)

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Some of our top rated extension builders in Chelmsford

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Cannon Building LTD
No reviews yet
Extension Builder in Chelmsford
We are local building company to Billericay and surrounding areas, we undertake all types of building and maintenance works, Or team have over 100years combined experience. We offer free advice, estimates and quotations Our prices are always competitive And have many very satisfied customers
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Johny the Builder
Rating: 5 out of 5
Extension Builder in Chelmsford
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.
Meades building sernvices
No reviews yet
Extension Builder in Chelmsford
Honest reliable hard working neat and tidy
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Todd Construction (uk) Ltd
No reviews yet
Extension Builder in Chelmsford
With decades of combined experience, our team covers every aspect of construction, giving our clients one trusted contractor from start to finish. Whether you’re a homeowner looking to improve your property or a business requiring reliable commercial contractors, we’re committed to delivering projects on time, on budget and to the highest standard. Our goal is simple. To build lasting relationships through exceptional workmanship and outstanding customer service.
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True Timber Carpentry & Construction
No reviews yet
Extension Builder in Chelmsford
Hi I'm Chris, I've got extensive knowledge of the building trade through 25 years experience as a carpenter. I have a keen eye for detail and a passion for perfectionism. I understand how important your build is to you - and it's just as important to me. Areas of expertise including but not limited to: * Extensions * Loft conversions * Kitchen installations * Orangeries * Garden rooms * Renovation work * Gazebos * External BBQ cabinetry and decking *2nd fix carpentry work
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Atlant Construction Ltd
Rating: 5 out of 5
Extension Builder in Chelmsford
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
DT interiors
No reviews yet
Extension Builder in Chelmsford
Trading under D Thurley Multi trade builders… NEW to the site.. checkout photos for some of our previous projects. Undertake work anywhere from the ground up, inside and out. With over 30 years of professional, high quality workmanship. Specialists in refurbishments/extensions/loft conversations/bathroom/kitchen fitting. Also landscaping including summer houses/games rooms/fencing/patios. No job to big or to small. Competitive rates.
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Craig Rutherford
No reviews yet
Extension Builder in Chelmsford
I have been in building trade over 40 years and have vast experience in all trades . Plastering is my favoured trade followed by bricklaying . I build extensions, refurbishing work, concreting, driveways, landscaping, plumbing, carpentry, tiling outside and inside. All roofing including flat roof in fibreglass finish. I work 7 days a week if required and am available 24hrs a day . I travel to all parts of the uk if required and no job is too big or small . I ensure the work area is kept clean and tidy and I offer advice and alternative ideas if required .
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CGS carpentey
No reviews yet
Extension Builder in Chelmsford
All carpentry and building work undertaken. Finished to a top professional quality.
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Homestyle Building Services
Rating: 5 out of 5
Extension Builder in Chelmsford
An Established building company operating for over 30 years. Offer a small friendly efficient reliable service . High standards of work. Satisfaction guaranteed .
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Latest review:
Bricklaying- 28 Oct 2020
Mark was quick to respond to & quote the job. He was reasonably priced and did a very professional job. He was punctual and was very open and honest regarding the work undertaken. I would highly recommend Mark based on the work he has done for me. Thanks again.
Haycroft Construction
Rating: 5 out of 5
Extension Builder in Chelmsford
Haycroft Construction has been proudly operating for over 15 years, building a strong reputation for reliability, quality and professionalism. We pride ourselves on providing honest, competitive pricing while delivering all works to a consistently high standard. Our experienced team is committed to completing every project efficiently and within agreed timescales, without compromising on quality or workmanship. Customer satisfaction is at the heart of everything we do, and we aim to provide a professional, reliable service from start to finish.
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Latest review:
Waste Clearance- 7 Oct 2026
An excellent and trustworthy company. They cover a broad range of services. I would highly recommend.
Harrison cook
Rating: 5 out of 5
Extension Builder in Chelmsford
Family run buisness All aspects of roofing Offering a 10 year garentee on all new roofs.
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Latest review:
Harrison completed the job to a high standard. He worked late to ensure the roof was left water tight overnight. The site was left clean and tidy.
Planet Construction Group Ltd
No reviews yet
Extension Builder in Chelmsford
Planet Construction Group (PCG) is an Essex-based construction and facilities management company, delivering groundworks, extensions, and general building works across Essex and Greater London. Our services span residential and commercial projects, from single-storey and rear extensions to full groundworks packages, subcontract works, and ongoing facilities maintenance for commercial client.
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MBS Commercial construction Ltd
Rating: 5 out of 5
Extension Builder in Chelmsford
We at MBS Commercial construction Ltd, are a self sufficient construction company who specialise in commercial and industrial industries including facilities management, we also cover domestic clients and factions. We are construction line gold, all operatives are NVQ qualified in their respective trades and all supervisors hold SMSTS and first aid training. We take pride in our work and stick by our core key company values of; 1. Reliability 2. Transparency 3. Cohesion 4. Sustainability With these at the helm of all our dealings, we strive to deliver projects on time, within budget, safely.
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Latest review:
Carpentry- 15 Sep 2024
MBS provided a great service. They were professional and pleasant, communicated well and did the work required.
A C Brickwork
Rating: 5 out of 5
Extension Builder in Chelmsford
My name is Adam, I run AC Brickwork which undertakes all brickwork (small and large jobs), extensions (start to finish), landscaping, block paving, driveways and patios and general maintenance. Please have a look at my website for more info, pictures of completed jobs and references. Thanks
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Latest review:
Extensions- 3 Apr 2010
i was a bit unsure about using my builder for the first time but after reading adams profile, feedback and visiting his website decided he was the brickie for me. i initially gave him a small job and was very pleased with his manner, workmanship, tidiness and punctuality that i would certainly recommend him to friends and will be using him again in the coming weeks
Dansbuilding&landscaping
No reviews yet
Extension Builder in Chelmsford
At dans building & landscaping we believe quality matters. We’re not the cheapest—and that’s by design. We’re a building and landscaping company that takes genuine pride in every project. With a reputation for honesty, reliability, and hard work, we don’t just show up—we stick around. From the first sketch to the final stone, our team is committed to getting the job done right, with craftsmanship that stands the test of time. Choose trust. Choose quality. Choose Dans building &landscaping
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4.4

Top rated Extension Builders

Our Extension Builders in Chelmsford, are rated 4.4 out of 5 based on 9 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Chelmsford?

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

Find extension builders in Chelmsford with MyBuilder

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

Step 2: Compare different extension builders in Chelmsford

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

Step 3: Hire Chelmsford extension builders with confidence

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

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

What to ask a Chelmsford extension builder before hiring?

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

An extension builder in Chelmsford 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 Chelmsford 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 Chelmsford?

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 Chelmsford 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 Chelmsford 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 Chelmsford

Can an extension builder in Chelmsford help with planning permission?

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

Many Chelmsford 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 Chelmsford help with materials and finishes?

Yes, most extension builders in Chelmsford 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.