Extension Builders in Swindon

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Some of our top rated extension builders in Swindon

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Montpellier Builders Ltd
Rating: 5 out of 5
Extension Builder in Swindon
We specialise in Renovations, New Build, Oak Buildings, Roofing, Barn conversions, Extensions, with over 20 years’ multiple trade experience within Building Sector. Covering all aspects of building work from start to finish. All work is insured and provided with our 'quality promise'.
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Latest review:
Electrical- 17 May 2017
Andrew of Kaldien was very quick to respond to my job. He went out of his way to visit our home out of working hours. He found the fault very quickly and luckily we only had to incur the call out charge which included half an hour's labour. The fault is up and running again and we couldn't be happier with his work. Will definitely be using Andrew again.
Pristine Property Care
Rating: 5 out of 5
Extension Builder in Swindon
A multi-trades builder working closely with customers to deliver Property Renovations, General Maintenance and Garden Rooms throughout the 3 Counties. Specialising in timber buildings, external and internal renovations; Tiling, Plumbing and Drainage, brickwork, carpentry, bathrooms, kitchens, insulation, rendering, plastering, Decorating, Hard landscaping and Fencing. Competitive rates and fully Insured.
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Latest review:
Fencing- 9 Aug 2020
First class company. Came to quote on time as promised. Hired without hesitation. Martyn made an absolutely first class job of our garden posts. Such neat and tidy work. Left no mess and we are delighted to know such a professional and friendly man who we will call upon again for any of our property work. You can’t get better than this level of service. Thank you Martyn.
ARLUN Groundworks LTD
Rating: 5 out of 5
Extension Builder in Swindon
Gloucester based Civil Engineering and Groundworks company, Owned by two brothers. currently looking to move the business forward. With over 15 years experience. Arlun Groundworks provide a comprehensive range of high quality services to include: Drainage, excavation muck shifting concrete finishing works patios driveways footings fencing landscaping full front and back garden renovations
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Latest review:
Driveways (Paved & Loose)- 15 May 2025
We recently had our Driveway replaced with block paving the work was completed by Arlun Groundwork’s. We are absolutely delighted with the transformation and can’t thank the team enough. Would highly recommend them, very professional and friendly team who ensured that we were kept informed of their progress and at the end of each day made sure the site was tidy and made safe. The amount of comments we have received from our neighbours have been extremely positive. Once again thank you Dan and the team.
TALL ORDER BUILDING SERVICES
Rating: 4 out of 5
Extension Builder in Swindon
Welcome! Here at Tall order we pride ourselves on having a keen eye for details and providing a affordable answer to high end finishes. We have Recently completed a stunning 3-year project in the Cotswolds, and we are now looking to use our skill and experience with you to create your ideas We are currently working with high-end property developers in Oxford and London. We actively seek new clients, developers, to cultivate positive, collaborative relationships within the construction industry. Our goal is to establish a reputable Building company that prioritize customer satisfaction and high-quality finishes. We take pride in accepting jobs that require a superior level of craftsmanship. No project is too big or small; our aim is to maintain a steady flow of work while delivering excellence.
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Latest review:
Carpentry- 17 Dec 2025
Top man is Laurence. A small job turned into roughly 3-4 months of work across more than one property. Great builder too who is adept in most areas from bricklaying, rendering, plastering, building furniture, woodwork and just about everything in-between. Capable in most aspects of building. Not your typical builder and a genuinely lovely guy nd very knowledgeable.
AM Hall Builders
Rating: 5 out of 5
Extension Builder in Swindon
All types of refurbishment works, extension and home improvements. Full bathroom and kitchen fitting service working to the highest quality
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Latest review:
Extensions- 21 Jul 2021
Top Tip - Engage Andy to do your work! We were delighted with the work Andy and his team completed on this new extension. Andy was on site throughout the build. His and his teams experience with this sort of work ensured that there was always a solution for minor problems and the advice they offered on light/space/design was invaluable. Despite the general increase in costs and shortage of materials during this pandemic, Andy brought the whole project in on time and within the original budget. His team worked well together, were polite and friendly and ensured that they understood the requirements and level of finish we were trying to achieve. In short - on time, on budget and a quality job. Can't recommend him strongly enough.
Cox’s Building Services
Rating: 4 out of 5
Extension Builder in Swindon
Specialising in groundwork, brickwork, landscaping & driveways. Extensions, new builds & repairs undertaken. Diggers/dumper and operator available at competitive prices, we provide our own grab lorry’s to get job completed quickly and efficiently. 26 years experience in the trade.
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Latest review:
Groundwork & Foundations- 12 Apr 2024
Excellent experience with Paul. He’s a problem solver, reasonable pricing and reliable. He built my house start to finish and it won’t be the last time I I use his services.
L&D plastering
Rating: 5 out of 5
Extension Builder in Swindon
We are independent company we have 25 years of experience in building industry we deliver high quality work a full house refurbishment, we do extensions, we do loft conversions we work closely with architects and designers to create the best possible build
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Latest review:
Extensions- 11 Jan 2023
Excellent service and worksmanship. Very happy with the finished project. They were a delight to work with. Happy bunch and communicated throughout the project, I highly recommend lulzim for any building and construction needs. Will definitely be using him again.
BespokeBuilds
Rating: 5 out of 5
Extension Builder in Swindon
Bespoke Builds is a Construction Company providing top quality service from start to completion. We offer a wide range of services. Due to over 10 years of experience in the trade, we know how to assess and complete a job with competence and professionalism. Our team is qualified in Bricklaying, Plastering and plumbing.
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Latest review:
Plastering- 16 Oct 2024
Ben and his colleagues have done a brilliant job of re-rendering the outside of my house in South Warwickshire. I really can't fault the team's work. They were all very keen to ensure that we were happy with the work. The project was undertaken in some challenging weather conditions at times and we did have some delays as a result. Communication was excellent. We always knew what was happening. I would very highly recommend BespokeBuilds to anyone needing rendering or plastering. Excellent!
Lock-Down Construction & Safety Services Ltd
Rating: 5 out of 5
Extension Builder in Swindon
We are a family run company with over 50years experience in construction. We offer services including all groundworks, Health & Safety, Training and project management. All our employees are highly trained and skilled to ensure we complete our work to a high standard
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Latest review:
Groundwork & Foundations- 16 Feb 2022
They kept us informed all the way through, from the dates, times and what was happening, etc. Really good job done and everything cleaned up and tidy. I would highly recommend this business, and the guys were great. Thank you for a good job done.
SH Services
No reviews yet
Extension Builder in Swindon
As the owner of SH Services I have 25 years of experience in the refurbishment industry. I believe in a flexible approach to any refurbishment as projects can often change throughout the process.
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Darren Hendry Bricklaying Building Contractor
Rating: 5 out of 5
Extension Builder in Swindon
Darren Hendry Bricklaying and construction. Quality time served tradesmen with the experience and expertise to get the job done. Please get in touch for a free no obligation quotation. We look forward to hearing from you. Kind regards Darren Hendry.
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Latest review:
Fencing- 16 Dec 2024
Absolute fantastic guy very reliable and trustworthy would definitely recommend him to anyone who wants work done I’ve already asked him to do another job for me come the summer if you need work done I would recommend him to anybody
OFI Builders
Rating: 5 out of 5
Extension Builder in Swindon
We pride ourselves in doing the best for the customer and will not accept a 'that will do' attitude; only perfection is acceptable. We have over 15 years experience in all aspects of the building trade from hanging a door to building a house under ground.
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Latest review:
Extensions- 23 Mar 2018
Job was started on time and I was kept informed all the way through on what and when things would be done. The extension was completed on time and was exactly as I requested, a couple of very minor issues came to light after the work was completed, but all that was needed was a quick phone call and things were put right the same day, I class that as good service. I would highly recommend OFI Builders.
County construction
No reviews yet
Extension Builder in Swindon
We have over 40 years experience between us in construction and always deliver a quality finish. We specialise in all aspects of brickwork, repointing,groundwork, patios and complete garden and home renovations. And always guarantee complete customer satisfaction. No job is too big or small.
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MB Brickwork
Rating: 5 out of 5
Extension Builder in Swindon
I am a bricklaying and building contractor with over 20 years experience working in and around Oxfordshire. I pride myself on producing a high standard of workmanship and making sure clients are left with a job they can be proud of. I work alongside some of the best tradesman , so no job is too big or too small.
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Latest review:
Extensions- 17 Apr 2021
Very positive and friendly. Had some good ideas. Waiting for him to do some more work for me
W.Mulhern Roofing & Building
Rating: 4.9 out of 5
Extension Builder in Swindon
I have been Roofing for 30years, Specialising in Slating and Tiling, New roofs and repairs, Approved Installers of Liquid Rubber Systems, EDPM, GRP, Built up Single Ply roofing, All aspects of Lead work (chimneys valleys parapets etc) Fitting of Velux roof lights, dormer windows, Upvc Fascia Boards and Guttering, Repointing. Loft Conversions
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Latest review:
Roofing (Flat)- 28 Aug 2024
Thorough and professional, reasonable cost and careful work done.
Fidus building
Rating: 5 out of 5
Extension Builder in Swindon
Here at Fidus Building, we aim to provide a stress free building works. With a team of trades on side, We range anything from refurbishments to extensions. No jobs to big or small. Start to finish we are there.
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Latest review:
Demolition- 14 Dec 2023
Ashley was absolutely brilliant. Was available quickly to complete the work and was really happy with the price. Since then I have asked Ashley to do many jobs for me and I have been really happy with everything. Ashley goes beyond the call of duty and offers advise and expertise whenever required.

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

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

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

What are the hourly rates of extension builders in Swindon?

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

Find extension builders in Swindon with MyBuilder

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

Step 2: Compare different extension builders in Swindon

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

Step 3: Hire Swindon extension builders with confidence

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

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

What to ask a Swindon extension builder before hiring?

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

An extension builder in Swindon 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 Swindon 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 Swindon?

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 Swindon 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 Swindon 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 Swindon

Can an extension builder in Swindon help with planning permission?

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

Many Swindon 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 Swindon help with materials and finishes?

Yes, most extension builders in Swindon 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.