Extension Builders in Bath

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 5 (6 reviews)

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Some of our top rated extension builders in Bath

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Chew Valley Builders
Rating: 5 out of 5
Extension Builder in Bath
We are a small friendly Bristol based construction company working within the Bristol and BANES areas. Previously concentrating within the property development market we are now scaling down our operations to cater for the domestic clients. With over 20 years experience in the construction industry we are able to carry out all aspects of Refurbishment, Alteration and Extensions, New Build, Design & Build and can take on any size project form inception to completion.
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Latest review:
Conversions - General- 10 May 2023
Barrie has been considerate and transparent throughout the process. He understood our original requirement and developed a solution that met our price range. The garage conversion has been finished to a high standard and we have no issues with the final spaces that has been created. In total the project took just over 2 weeks to complete all of the works, including a new French door, electrical sockets, insulation and plaster/paint. We have enjoyed having friendly faces pop in every day and would happily recommend them.
E M Builders
No reviews yet
Extension Builder in Bath
I have been in building trade for over 40 years. My initial trade is plastering, though I have mainly concentrated on building extensions and general home improvements.
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Sulis masonry limited
No reviews yet
Extension Builder in Bath
We are a fully experienced workforce, With many skills. We are a stonemasonry and general building business
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TJ Building (Bristol) Ltd
Rating: 5 out of 5
Extension Builder in Bath
TJ Building (Bristol) Ltd, led by Thomas John Wood with 20+ years of construction experience, is a trusted company in the Bristol area. Tom and his team stay up to date with current UK Building Regulations, ensuring reliable work and well-informed recommendations.
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Latest review:
Extensions- 16 Sep 2021
Tom did an excellent job in completing my porch, despite having to work through a back injury. He was always prompt, and kept me informed of work in progress and timescales. He managed the job very well, and ensured that the door and window that were supplied by Price Glass were fitted in tune with the porch build sequence. He kept me informed of any changes to the budget caused by changes that were requested or necessitated by external factors. I would certainly recommend Tom for your project.
D.Robson Construction Service’s
Rating: 5 out of 5
Extension Builder in Bath
I am a qualified bricklayer, with experience in stonework, brick/blockwork, fencing, landscaping, plumbing, tiling, plastering, dry lining etc. I can undertake all aspects of building work, and with an expansive knowledge, can give advice freely to anyone in need.
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Latest review:
Dan has recently completed the brickwork on our new driveway. Absolutely dedicated from the start - the result is better than we imagined. He is a reliable tradesman who put weekend after weekend to get our project done. Everyone who has visited during and since have commented on the quality of the work. Would happily use Dan again and no doubt will do in the future.
Property services bristol ltd
Rating: 4.8 out of 5
Extension Builder in Bath
Having worked in the commercial construction industry for 20 years specialising in interior fit outs I have now decided to start branching out to domestic work. The difference usually from commercial and domestic is the standers having worked on multi million pound projects the attention to detail is vital , a lot of domestic workers couldn’t deliver the quality of work needed for commercial projects. Also the advantage is able to programme works to be most efficient as possible .
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Latest review:
Extensions- 31 Jul 2024
Initially the basement conversion looked good but now I am experiencing significant problems . The plumbing hasn’t been completed properly and the rework before plastering is awful so the plaster has now popped and will all need redoing . The wall was not insulated properly . Highly disappointing DO NOT USE.
J K BUILDERS & PLANT HIRE LTD
Rating: 4.8 out of 5
Extension Builder in Bath
JK Builders are a highly qualified, professional and friendly development business, we have over 20 years’ experience in the building trade. We pride ourselves on quality workmanship, efficient and attention to detail that exceeds our customers’ expectations, no job to small and specialise in everything from driveway to house renovations and extensions as you can see from our great profile of pictures the standard we work to, look forward to working alongside you in any project that we take on
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Latest review:
Extensions- 14 Jan 2019
We were very impressed with Jamie's overall approach to the project. They were able to resolve issues that arose during the build, quickly and efficiently. Jamie has an excellent team with a wide range of specialist skills who were friendly, courteous and tidy at all times. The project was completed in a timely manner with no hidden extra costs. We are very pleased with the end result and would have no hesitation recommending JK Builders for work of this type.
ultra trade
Rating: 5 out of 5
Extension Builder in Bath
We are a Building/construction business and have been in the trade for 34 years. I did a five year engineering apprentiship and have passed carpentry/bricklaying/electrical/plastering etc courses over the years. We specialize in all forms of Quality domestic building work to include all internal and external construction.
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Latest review:
Extensions- 8 Feb 2026
Excellent work carried out by Graham, Ollie, Turks and the team! Ollie and the team worked hard to get the bathroom extension done with minor alterations at my request taken into account and catered for. Would highly recommend the team who were polite, courteous, worked hard and were tidy.
JMR Building
Rating: 5 out of 5
Extension Builder in Bath
My self (Mark) and my son Joe have been in the building and glazing industry for over 20 plus years. From Conservatories and windows now more Bifolds and Roof lanterns. Changing conservatory roofs to light weight tiled warm roofs to give you a greater heat saving and comfort level. Making older conservatories into full walled extensions. Or a complete single storey new extension from start to finish. We offer a full planning and drawings service. Fascia, soffits and guttering is offered along with full Garage Conversions. All Building Control applications and managing is standard. I f want a flat roof we offer Firestone rubber roofs. Then flat glass panels or Lanterns. In all colours. Bifolding doors in Aluminium from 2 panes to 8 panes wide again in White, Anthracite Grey or Black as standard or dual colour with White inside and any of the 3 colours outside. New standard glazing windows and doors in UPVC or Aluminium. Along with Composite front doors in a wide range of designs and colours. Extensions can be a traditional build ( wet build bricks and blocks) or a Modular Build we tend to build more of especially in high impact drainage areas and offers more speed of build. This includes walls and roof pods for warmth and speed.
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Latest review:
Extensions- 24 Feb 2026
Can’t be more pleased with Mark and his Son, job was completed to a very high standard.
mpw brickwork
Rating: 5 out of 5
Extension Builder in Bath
Vanity Construction Group delivers high-quality renovations and building services with a focus on craftsmanship, reliability, and clear communication. From bathrooms and kitchens to full home projects, we create spaces that combine function, style, and lasting value.
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Latest review:
Bricklaying- 23 Feb 2020
Excellent work. Worked hard to get the job done.
Srdennis&sons
No reviews yet
Extension Builder in Bath
35 years experience family run business new builds, extensions, renovations, ground works, landscaping and loft conversions
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Modernization
Rating: 5 out of 5
Extension Builder in Bath
Hi, I am an NVQ qualified Carpenter/General Builder with proven multi skilled experience of working in a domestic and commercial building services environment.I am organized, motivated, honest and always working to the highest standards.I have an analytical approach and I am a good problem solver.
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Latest review:
Extensions- 6 Jul 2026
Really pleased with the work carried out. The quality of the workmanship was good, and the team worked hard throughout. I’d happily use Igor and his team again for future work and would recommend them to others
Set Square Group ltd
Rating: 5 out of 5
Extension Builder in Bath
Set square group is a family run business. We are honest and reliable people who take great pride in each and every job we complete. We have good communication skills and find it a pleasure to deal with customers on a daily basis. No job too small.
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Latest review:
Extensions- 17 Nov 2024
We decided to just do single storey rear extension, full width of the house and 4.5 length with Ryan. As well doing extension, change ground floor layout, make old kitchen into utility room, downstairs toilet & shower, take down old kitchen window to make a hallway, then in living room, remove old patio doors and change it into double doors into the new extension. We wanted the boiler moved from our bedroom to new extension too. Installation of kitchen, flooring and painting was going to be done by us. All other work by them. It wasn’t just reasonable price and previous good review reason for choosing Ryan, Set Square was member of federation of builders, he come out couple of times, quote he give gave a good breakdown of work that was going to be covered. What I like about Ryan is the material he used was high quality and not cheap version ones. Overall, I think we were lucky that Ryan was available and we discovered him. Work done to high standard. Thanks Ryan and family.
Brace & Co building services
No reviews yet
Extension Builder in Bath
Hello I am Shane from Brace and co. I set the company up after serving in the trade industry for the last ten years.Here at Brace and co we offer complete building services from design to finish. We have contacts with various trades to offer a complete service. We will consider every job put forward as we like to meet everyone's demands, we have know many different specialist trades also.
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Palmer’s Woodworking
Rating: 4.9 out of 5
Extension Builder in Bath
Hi, I’m a local carpenter/builder with 10 years experience behind me. Offering reasonable rates and friendly service - choose Palmer’s Woodworking.
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Latest review:
Carpentry- 27 Aug 2026
Alex was absolutely great, very professional and sorted everything for a great price. Thanks very much!
MBBM
Rating: 4.9 out of 5
Extension Builder in Bath
Let me introduce myself my name is Dan, Butson construction limited, we cover all aspects of building Maintenance, kitchens, bathrooms, loft conversion, extensions, HMO etc, we are reputable reliable company that work to the highest standards. The quality of our work and quality of customer care is of paramount importance to us, we also offer design and build services from architects, structural engineers etc
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Latest review:
Extensions- 21 Oct 2025
Dan and his team did an amazing job of our single story extension. Dan provided a very comprehensive breakdown of his quote, which he stuck to throughout the build. We made a few changes as we went along and Dan accommodated these without hassle. The timescales were a little longer than planned, but this was due to the weather and other factors outside of control. Overall Dan provided us with a very competitive quote and met all our expectations in terms of quality and finish. We would have no hesitation in recommending Dan, and in fact we have done already to 2 of our friends :-)

Top rated Extension Builders

Our Extension Builders in Bath, are rated 5 out of 5 based on 6 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Bath?

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

Find extension builders in Bath with MyBuilder

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

Step 2: Compare different extension builders in Bath

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

Step 3: Hire Bath extension builders with confidence

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

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

What to ask a Bath extension builder before hiring?

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

An extension builder in Bath 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 Bath 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 Bath?

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 Bath 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 Bath 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 Bath

Can an extension builder in Bath help with planning permission?

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

Many Bath 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 Bath help with materials and finishes?

Yes, most extension builders in Bath 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.