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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Modernise 360 Ltd
No reviews yet
Extension Builder in Chelmsford
Welcome to Modernise 360 Ltd, where we specialize in transforming homes through our expertise in home extension, loft conversion, and renovation services. With a keen eye for detail and a commitment to quality, we bring your vision to life, creating personalized, functional living spaces that reflect your unique style. Our collaborative approach ensures that you are involved in every step of the process, from the initial concept to the final construction phase. We prioritize open communication, transparency, and customer satisfaction, striving to exceed expectations and deliver results that are not only visually appealing but also durable and sustainable. By combining innovative design with expert craftsmanship and utilizing the latest industry practices and technologies, we aim to add long-term value to your property. At Modernise 360 Ltd, we are dedicated to making your home renovation journey seamless and enjoyable, turning your house into the home you've always envisioned. Join us in experiencing the transformation and making your dream home a reality.
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Birch Building and Decorating Services
No reviews yet
Extension Builder in Chelmsford
Reliable experienced builder of over 40years A good communicator
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George matthews
No reviews yet
Extension Builder in Chelmsford
No job to big or to small , we love to on any size work and have it dealt with in a professional manner. Extensions , garden walls , brickwork repairs , pointing anything brickwork related can be corrected or built
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Lowes plastering
No reviews yet
Extension Builder in Chelmsford
At Lowes Plastering, we specialise in high-quality internal plastering and external rendering services. With over 20 years of hands-on experience in the trade, we take pride in delivering professional workmanship and flawless finishes on every project. From smooth internal plastering and skimming to durable external rendering and modern coloured render systems, we provide reliable, long-lasting results tailored to your property. Whether it’s a small repair or a full property transformation, we are fully insured and committed to delivering every job with attention to detail, cleanliness, and complete customer satisfaction. Trusted, experienced, fully insured, and dedicated to quality – Lowes Plastering gets the job done right.
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PDM construction
No reviews yet
Extension Builder in Chelmsford
New to my builder . Discounts to first 5 customers!!!! Reliable builders. Capable of all aspects the trade ..
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White Carpentry & construction
No reviews yet
Extension Builder in Chelmsford
Hi I’ve been doing carpentry and building for the last 9 years I specialise in carpentry and set my own company up in 2018 since leaving a building local firm in Essex to set of on my own and inspire to have a successful building company myself
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P.Martin
No reviews yet
Extension Builder in Chelmsford
30 years experience within the building trade, bricklaying, plastering, carpentry, plumbing
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Haymore Ltd
No reviews yet
Extension Builder in Chelmsford
Built on over a decade of experience across just about every sector of construction, we have the know-how to get your project done. If you're after a loft conversion, rear extension, annex, or even a complete house overhaul, we can do it! Truthfully, almost any builder can do all that, so what makes us stand out from the crowd? We set up Haymore to be different from day 1. Our motto is “Construction Simplified” and we really believe that is what we offer.
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Peter May
No reviews yet
Extension Builder in Chelmsford
We offer a full range of building services from a garden wall/landscaping, to extension/renovation to full new build and everything in between. 40 years experience in the building industry
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Ambee property services Ltd
Rating: 5 out of 5
Extension Builder in Chelmsford
We are a dedicated team of construction specialists at Ambee Property Services LTD, committed to delivering technical precision and high-end luxury finishes. Our journey is defined by a relentless pursuit of quality craftsmanship, ensuring that every renovation, extension, and loft conversion we undertake is a testament to excellence. We believe in the power of technical precision to transform spaces, whether it is a sophisticated family home upgrade or a complex commercial project.
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Latest review:
Really pleased with the extension work completed by Ambee Property Services. The team were professional, reliable and did a great job from start to finish. The quality of the work was excellent, and everything was completed to a high standard. Would definitely recommend them!
G&M Building Contractors Essex Ltd
No reviews yet
Extension Builder in Chelmsford
We are specialist building contractors for all residential and commercial fit out including design,Planning to completion. Specialist joiners & all aspects of carpentry Specialist Decorators All mechanical & groundworks.
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AJ Partners Ltd
Rating: 5 out of 5
Extension Builder in Chelmsford
We are family business working in different levels of building industry. Refurbishment, supply and fit and installation service. Carpenter, Joinery, Tiling, Plumbing, etc. Supply or supply and fit, refurbish and new build We completed various projects in London and surrounding areas We listen to our clients needs and liaise with you throughout your project to ensure that the project finishes on time and on budget. Trades 15 Years of experience and good reviews leads our work.
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Latest review:
Kitchen Fitting- 7 Jun 2020
We liked Alex from the first meeting and the first impression was spot on. Alex did an amazing job on our kitchen, which was half initiated by another tradesman. He reviewed the work and fixed many issues, always explaining and communicating well. Our kitchen had to be adapted and had some non standard cabinets but Alex was able to do all the additional features we asked for and with a great result. He also recommended some design changes which we agreed to and love. He finished the work, reviewed everything and signed off, always with a smile which is a plus. Definitely highly recommended and we will call him again in the future for sure. Thank you Alex!
Gemini Properties
No reviews yet
Extension Builder in Chelmsford
We specialise in property refurbishments, and domestic extensions and all trades in between. We are NIC EIC registered for electrical work and use a Gas safe registered company for all gas associated work.
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Be you build
Rating: 5 out of 5
Extension Builder in Chelmsford
Be You Build is a trusted general building contractor specialising in house extensions, HMO conversions, renovations, landscaping, and property improvements. We work closely with homeowners, landlords, and developers to deliver high-quality projects from start to finish. Our services include single and double-storey extensions, full property refurbishments, HMO conversions, structural alterations, brickwork, groundworks, patios, driveways, fencing, and landscaping. We pride ourselves on professional workmanship, clear communication, and delivering projects safely, on time, and within budget. Whether you’re looking to create more living space, add value to your property, or transform your outdoor areas, Be You Build is committed to bringing your vision to life with quality you can trust. Constructionline Gold Member | Fully Insured | Free Quotations
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Latest review:
We was recommended Tom and rob from be you build Ltd buy a work colleague Who had their extension built by Tom and the Team. The guys come out and see us at the property and went over our plans and put together a competitive price from start to finish. The Team was great to deal with and come across extremely knowledgeable. They managed to get us booked in within four weeks turned up when they said they would a team of 3 delightful gentlemen done the works they protected all of our furniture helped move stuff out of the way and sheeted everywhere up properly the works took one week as the company had explained. Everything was done professionally to a high stranded with minimal disruption to home life. Can’t fault the Team nor the finish of the job. Thank you to all involved would give more than five stars if I could can’t fault the Team their work ethic communication and professional professionalism. Thanks again guys Dave smigg
CM Fixing Limited
Rating: 5 out of 5
Extension Builder in Chelmsford
Façade & Cladding * Façade installation across a wide range of systems and materials * High-performance rainscreen cladding systems * GRC (Glass Reinforced Concrete) façades * Metal panel façades * Terracotta rainscreen systems * Curtain walling systems * Shopfronts and glazed façades * Atriums * Canopies * Louvres and ventilation systems * Privacy screens * External façade paint refurbishment * Mastic and façade sealing works Curtain Walling Installation of curtain walling systems, including: * Schüco * ALUK * Metal Technology * Smart Systems * Jansen * Single and double-glazed curtain walling systems * Structural glazing * Structural silicone glazing Windows & Doors Supply and installation of: * Aluminium windows and doors * Steel windows and doors * PVCu windows and doors * Timber doors * Composite doors * Commercial and residential entrance doors * Glazed doors and screens * Shopfront doors and systems Glass Supply & Installation * Single and double glazing * Replacement glass * Structural glazing * Safety and toughened glass * Laminated glass * Insulating glass units (IGUs) * Glass for windows, doors, curtain walling and shopfronts Internal & Specialist Glazing * Internal glazed partitioning * Internal partitioning systems * Structural glazing * Suspended ceilings * Glazed screens and internal doors * Glass replacement and remedial works Door Automation Supply, installation, servicing and maintenance of automated door systems, including: * Automatic sliding doors * Automatic swing doors * Entrance automation systems * Door operators and controls * Sensors and associated hardware
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Latest review:
Windows & Doors (uPVC & Metal)- 16 Sep 2026
Reliable, courteous and transparent. Marian is very efficient and fixed the window on the same day I made the enquiry. Highly recommend.
Mason Plumbing & Heating (Essex) Ltd
Rating: 4.7 out of 5
Extension Builder in Chelmsford
Here at Maison Construction & development Ltd we offer a reliable, responsive service that encompasses everything necessary to keep buildings safe, watertight and looking their best. Bringing a professional, friendly and competitively priced service for all of your needs!
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Latest review:
Bathroom Fitting- 20 Feb 2020
Excellent job!! So pleased with both new shower room and bathroom. Neat and tidy workmanship. Not only did Phil do exactly what we wanted but came up with some really great alternative ideas. Explains everything throughout the whole process, and a good price too. Still have some more work lined up for Phil, and would have no problem recommending him, (actually already have) Many thanks Phil Kim Lawford, Essex

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.