Extension Builders in Chelmsford

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.5 (11 reviews)

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Some of our top rated extension builders in Chelmsford

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AG Building & Plastering
No reviews yet
Extension Builder in Chelmsford
I have 17 years experience working as a general builder covering all aspects of building work. I have a very good all round knowledge of the building industry and would like to use my knowledge to complete the projects in your home from plastering kitchens bathrooms extensions alterations Capentry tiling and much more
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DezRez construction
Rating: 5 out of 5
Extension Builder in Chelmsford
Hello, I am a confident and trustworthy builder who covers a wide range of the building trades. I have 10 years experience in the industry and guarantee a desired result everytime.
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Latest review:
Plastering- 23 Nov 2025
Just had all my plastering work completed by Callum, a full Bathroom ceiling and lots of new electrical chases in 3 x additional rooms. Callum replied to my advert within an hour and he came and viewed the work and we agreed a rate within 2 days. Callum was very punctual and started work straight away by covering all our floors and carpets with plastic protectors. Callum was very polite and worked extremely hard all day without stopping, he also plastered in some additional areas adjacent to the areas that we agreed in the quote, which was great. Callum cleaned up and hovered in all the rooms when the work had been completed and left our house spotless The Finish of the plaster is fantastic and smooth. It’s a great job, well done and thank you. I wouldn’t hesitate to hire Callum again in the future and I will be definitely recommending Callum’s services to family and friends.
BelLace Construction
No reviews yet
Extension Builder in Chelmsford
The company was started this year and I have started it off the back of many years experience in project management on new build houses and education projects At BelLace we undertake all elements of work from D&B ,new build ,extensions and refurbishments We also undertake smaller trade element tasks as required
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Unity Building Solutions
Rating: 5 out of 5
Extension Builder in Chelmsford
At Unity building solutions we undertake any aspect of building work. From new build developments, restaurants, workshops and extensions, to driveways and landscaping. We also cover contract work, including all national public sectors. All of our personnel are fully qualified in each specific trade needed to complete each job. Every job we undertake is finished to the highest standards. We provide a safe and healthy working environment for our clients and operatives. We are a highly accredited company. Federation Of Master Builders, Chas Enhanced, Construction Line Gold, Safe Contractor Approved, ISO 9001 and ISO 14001
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Latest review:
Very professional team Worked well with me as a client to assure everything I wanted got met to a very high standard Future work is now booked in I’ll look forward to working with unity again Appreciate everything josh
HG Property Services
No reviews yet
Extension Builder in Chelmsford
I am an experienced multi-tradesman prepared to undertake a manner of property works and maintenance. No job too big or too small and I work by that. I undertake framing carpentry, roofing, fascia’s and soffits, decorating, dry lining, groundwork and more.
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Newstar Building Services Ltd
Rating: 4.9 out of 5
Extension Builder in Chelmsford
HI my name is Bill and I run a building company. All our work is base on recommendations costumers We work all around London.
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Latest review:
Hard Flooring- 22 Oct 2025
Enea did an incredible job, and we’re beyond happy with the final result. He was very accommodating, helped us choose the right tone of varnish beforehand, and kept us updated throughout the day by sending pictures of his progress (as we were both at work). Enea is trustworthy, and even though we didn’t have the chance to meet him in person, he left the flat securely, taking care of our keys and door. We highly recommend Enea!
JSSD construction Ltd
No reviews yet
Extension Builder in Chelmsford
Full refurbishment, loft convertion Extantions,new build, Electrical first and second fix
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Hatch construction bricklaying/Landscaping
No reviews yet
Extension Builder in Chelmsford
We do all aspects of Brickwork/blockwork, carpentry, footings, hard/soft Landscaping I.e (patios driveways turf) and now carpentery aswell
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Stark Management Limited
Rating: 5 out of 5
Extension Builder in Chelmsford
Accredited with the Federation of Master Builders, TrustMark, Better Business Group and Accreditus Register. Our specialities include New Build Projects, Developments, Extensions and Loft Conversions. We consider ourselves to be different from our competitors as we take on only one project at a time to ensure that we can give our clients our 100% focus and committment.
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Latest review:
New Builds- 24 Jul 2025
job
D2 Design And Build Ltd
Rating: 5 out of 5
Extension Builder in Chelmsford
We are a fit-out and joinery manufacturing contractor servicing the retail, commercial, domestic industries.we feel we have a feel for what is expected and in many cases lacking of a fit out company in today’s market,we promise to provide an unrivalled service with regards to cost and programme which is only surpassed by our quality and attention to detail.With over 50 years of combined experience in shopfitting,building,joinery,decorating, plastering.
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Latest review:
Joinery & Cabinet Making- 15 Mar 2019
Fantastic Job. Lovely new wardrobe doors. If specified a time were on time each and every time. Allways answered any questions. Kept informed as to time scale. Would highly recommend!
DAVIMA LTD
No reviews yet
Extension Builder in Chelmsford
We are a company that specializes in office fit-outs, general building, homes refurbishment and kitchen installation. We handle both small and large projects. For us, every client is important. We’ve been working in this field for over five years, ensuring reliability and high-quality workmanship.
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Keivin Topalli
No reviews yet
Extension Builder in Chelmsford
We specialise in many types of foundations. We are a team of 3 professional groundworkers. Things we specialise in: Piling (all types of mini piling,drop cases, screwpiling) Foundations (rafts, beams etc) Digger work( site prep, site clearance or your simple digger work) Steelfixing to engineered standards/ drawrings concrete laying ( to desired level)
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Today General Dream Construction
No reviews yet
Extension Builder in Chelmsford
Welcome, and thank you for viewing my profile. My name is Emmanuel Amos, and I am a highly skilled and dependable bricklayer and construction professional with over 9 years of experience delivering high-quality workmanship on residential and commercial projects. I specialise in bricklaying, garden walls, extensions, structural masonry, repointing, repairs, and general building work. My focus is on precision, durability, and a clean, professional finish that adds real value to your property. I bring both international and UK site experience, and I understand the standards, safety requirements, and expectations of clients across the UK. Every project I undertake is completed with attention to detail, strong workmanship, and full respect for your property and time. I work efficiently, maintain a clean and safe workspace, and ensure all work meets professional and structural standards. I pride myself on honesty, reliability, and clear communication from start to finish. My goal is not just to complete a job, but to deliver results that exceed expectations and build lasting trust with every client. Whether your project is small or large, you can expect quality workmanship, professionalism, and dependable service. Contact me today
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Sgt carpentry and building
No reviews yet
Extension Builder in Chelmsford
Hi I'm Steve I'm a carpenter. We have been building loft conversions and extensions around Southend . We also fit bathroom and kitchens . Doors . Stairs . Most trades we have if we can't do it our self's .
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DJRBUILDCO LTD
Rating: 5 out of 5
Extension Builder in Chelmsford
DJR BUILDCO LTD is a professional building company specialising in loft conversions, extensions, refurbishments, and structural works across London, Essex, Hertfordshire and Cambridgeshire. We provide a complete service from initial advice and planning support through to construction and Building Control sign-off. We pride ourselves on high-quality workmanship, clear communication, and reliable project management from start to finish. Whether it’s a full extension or a smaller renovation, we work closely with our clients to deliver projects on time, on budget, and fully compliant with current Building Regulations
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Latest review:
DJR Build Co Ltd completed our loft conversion between October and November, and we are over the moon with the final result. From start to finish, they were extremely professional and a pleasure to deal with. The quality of the work is excellent, and the whole process felt smooth and well managed. We would happily recommend their services to anyone.
ROSSIS CONSTRUCTION LTD
Rating: 4.9 out of 5
Extension Builder in Chelmsford
FMB member
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Latest review:
Extensions- 24 Feb 2020
Rosin was fully committed to the job from the beginning. His pricing was reasonable and the building work was professional. His time keeping was 100% with outstanding work ethics. Highly recommend.

4.5

Top rated Extension Builders

Our Extension Builders in Chelmsford, are rated 4.5 out of 5 based on 11 reviews from customers like you.

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Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

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.