Extension Builders in Swindon

Easily find verified Swindon Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Swindon.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in Swindon

258 Results

Sort by:

OPM OXFORD
Rating: 5 out of 5
Extension Builder in Swindon
I ben working over many years with estate agents and individuals landlords in variety of the projects in property maintenance.
Get in touch
Latest review:
Dorinel and his team have completed a full renovation for me year end 2022. He has also carried out other jobs in the past and his workmanship has always been to an excellent standard and completed the work within the said time frame. Would recommend him.
Cotswold Oakwood Limited
No reviews yet
Extension Builder in Swindon
We specialise in creating refined, bespoke luxury extensions and renovations that perfectly align with your property and vision. Excellence in every detail.
Get in touch
Paul walker carpentry and property maintenance
Rating: 5 out of 5
Extension Builder in Swindon
We are a small reputable company specialising in all aspects of carpentry and property maintenance with 20 years of experience within the building trade.
Get in touch
Latest review:
Carpentry- 7 Dec 2021
Job well done at a fair price
Manor Developments Oxford Ltd
No reviews yet
Extension Builder in Swindon
We are a building company who provide high-quality residential construction services across Oxfordshire and surrounding areas. We specialise in extensions, renovations, alterations, and bespoke building projects, delivering quality workmanship with a personal approach. We aim to make the building process clear, straightforward, and stress-free, while maintaining consistently high standards from start to finish.
Get in touch
lee burbury construction limited
Rating: 5 out of 5
Extension Builder in Swindon
I have been in the trade 20 years with 95% of my work coming from recommendations. I have a crew of skilled tradesmen consisting of plasterers, labourers and carpenters and we pride ourselves on honesty, quality and high standards of work but also building a good relationship with our customers.
Get in touch
Latest review:
Lee was very professional from day one, turning up on the dot for pre-sales appointments which was always appreciated. He kept us informed of progress and of course the inevitable hiccups and we always felt we know where we were on the project. The workmanship of Lee and team was always excellent and Lee built a high level of trust very quickly.
Andy Bell Construction
Rating: 5 out of 5
Extension Builder in Swindon
Andy Bell Construction is a trusted company with over 30 years experience. We undertake everything from new houses, extensions, driveways, roofing repairs, rubber roofing, garden walls, landscaping, re-pointing, dry stone walling, natural stonework, repair work or maintenance that you require to your property. I provide a quality service, overseen by myself with an excellent team of qualified tradesmen . We are thoroughly professional and reliable builders who works to the highest standards.
Get in touch
Latest review:
Bricklaying- 30 Mar 2017
Really great service from start to finish. Very efficient in answering questions and providing the initial quote. Would recommend and will be inviting Andy back to complete more works on our property
James Cullip Building
No reviews yet
Extension Builder in Swindon
I have a good experience in many fields of building, I have built small extensions and conversions at a high standard for a number of years. I basically do everything from the ground works to the roof tiling. I do not undertake in plumbing or electrical works.
Get in touch
Ben Smith Carpentry & Building
Rating: 5 out of 5
Extension Builder in Swindon
We are high quality and recommended building and carpentry contractors. Within our company we have 35 years of experience in building, carpentry and renovation. We are also Fensa registered windows and doors installers. We are registered with a number of trade associations these include: Trust Mark - Government Endorsed Standards Consumer Protection Association CSCS Registered Offering an insurance backed guarantee on all works References available on request
Get in touch
Latest review:
Extensions- 9 Apr 2018
Ben and his team were excellent and have produced a high quality extension for the price quoted. I very much valued that they were always clean and tidy, courteous and were available to contact during the build.
4Walls Project Management Ltd
Rating: 5 out of 5
Extension Builder in Swindon
4Walls Project Management Ltd specialises in the successful delivery of mutli-trade projects for residential and commercial clients. We provide a comprehensive project management service along with being the single point of contact for clients and trades people which increases the efficiency and reduces the time, stress and potential misunderstandings involved in a project for everyone. We can walk you through the entire project from concept to completion or get on and get it delievered for you.
Get in touch
Latest review:
Extensions- 8 Feb 2020
Absolutely brilliant. Andrea is so knowledgable, and her attention to detail is incredible. It’s really so reassuring to be able to leave everything to such a consummate professional, knowing that she can be trusted to raise with you any and all decisions in good time (even the most minor ones!). So relieved to have gone through such a big project with so little stress!
Townsend Builders Ltd
Rating: 5 out of 5
Extension Builder in Swindon
I have owned Townsend Builders for the last 6 years, started off in stonemasonary with very bespoke work however demand has led me to undertaking extensions, renovations and all building work. Groundwork’s Brick/block work Plastering Roofing 1st & 2nd Fix carpentry
Get in touch
Latest review:
Extensions- 9 Sep 2019
We are so happy with the room that Townsend Builders have just completed. It is a quality build finished to a very high standard that is exactly what we wanted. Matthew is a very knowledgable and skilled builder who has an eye for detail and will consult with you on decisions that may improve your design. The build has been completed before it was due to start as a delay in another job left an opening that we could take advantage of. Even when the weather was not ideal Kevin the bricklayer continued to build and has done a great job of the walls. All of the subcontractors that Matthew has recommended have carried out their work to the same high standards which is testament to Matthew's overall approach. We have already booked him to carry out further work and will use him for our next project without hesitation. Thank Matthew, Kevin & Mason
Bristol Home Improvements Ltd
Rating: 4.9 out of 5
Extension Builder in Swindon
Thank you for looking We are a family run business, with over 35 years experience within the trade 10 year warranties on all glass and products Insurance back guaranteed for piece of mind. Certass Registered to be able to sign your windows/doors off, we pride the company on 100 percent customer satisfaction, we also do not have salesmen or premises, so the overheads are low So we can give you a very competitive price
Get in touch
Latest review:
Conservatories- 24 May 2026
I am really pleased with the work done. I would recommend them to anyone
Threesixfive FM Services LTD
No reviews yet
Extension Builder in Swindon
Trading since 1980 general builder apprenticed as a carpenter .. Member of the federation of master builders..
Get in touch
Cholsey Brickwork
No reviews yet
Extension Builder in Swindon
My name is Gary I specialise in all aspects of brickwork ,repointing,hard landscaping and ground works. I've been in the bricklaying / building trade for 16 years I also have vast experience in garden walls, large boundary walls, Retaining walls, Patios, Driveways, new builds and refurbishments
Get in touch
Brick King
No reviews yet
Extension Builder in Swindon
Expert Bricklayers – Quality, Reliability, Craftsmanship Based in Oxfordshire area, my team delivers superior bricklaying and general masonry services. With 15 years of experience, our certified team specializes in all aspects of brick and block work for residential and commercial projects. We ensure meticulous attention to detail, structural integrity, and a professional finish on every job. From new constructions and extensions to expert repairs and garden walls, we are the trusted local choice for durable, high-quality results. Contact us today for a free estimate.
Get in touch
NC Carpentry & Construction
Rating: 5 out of 5
Extension Builder in Swindon
In Construction the final appearance of the finished product is everything. Here at Nc carpentry Construction Ltd we try to achieve all the elements of getting a perfect job every time. Those elements are final presentation,dedication and experience to meet the clients needs. With years of experience from doing small jobs to big new builds we are 100% dedicated to the final appearance.
Get in touch
Latest review:
Conversions - General- 14 Oct 2018
Noel and Dan did a very good job converting our shed into an office. They were always on time, were very good at communicating, and always cleaned up after themselves at the end of each day. There was a problem with an electrician who let them and us down - prolonging the job by a few weeks. However, their own work was excellent and to time, and we are enjoying the fruits of their labour. I would very happily recommend them (although perhaps not the electrician!).
Makespace
No reviews yet
Extension Builder in Swindon
I am a multi trade company Makespace. We worked for an architect for over 18 years on loft conversions and extensions. Now we are going alone in the market so are looking for help to get clients. We have never had any complaints and pride ourselves on a professional manner and finish.
Get in touch

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.