Extension Builders in Devizes

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

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 Devizes

240 Results

Sort by:

Moloney Contractors Limited
Rating: 4.8 out of 5
Extension Builder in Devizes
We are a family based construction firm with 32 years experience. We will design and build individual homes to suit any style, size or budget. We also undertake conversions and extension's and smaller projects such as fitted kitchens, staircases, bathrooms and much more.
Get in touch
Latest review:
Extensions- 9 Dec 2018
Brendan project managed our large and rather complex kitchen extension in our old Victorian school House. From start to finish he was excellent with a great eye for detail. He was professional 100% reliable and we always felt he was acting with our best interests at heart in terms of quality and costs. We would hire him again at the drop of a hat!
Seam Construction
Rating: 5 out of 5
Extension Builder in Devizes
Seam construction. Building contractor. Warminster. 30 years experience working on a variety of projects. To maintain and enhance your home or property. Groundwork from underpinning' foundations, driveways patios landscaping. Bricklaying House walls garage walls garden walls and all repairs and alterations including structural openings. Stonework and lime pointing. We have a fully quilified team and liability Insurance. General building and maintainence. Carpentry. .
Get in touch
Latest review:
Bricklaying- 1 Oct 2018
Jules did a first class job on the wall, slabs and concrete path. He provided excellent value-for-money and was always punctual. He is also a very friendly person who was easy to get on with. I would have no hesitation in using him again and in recommending him to anyone needing this type of work.
Whitehouse plastering services Ltd
Rating: 5 out of 5
Extension Builder in Devizes
Friendly and reliable company, willing to undergo a variety of building work and general property renovations
Get in touch
Latest review:
Restoration & Refurbishment- 17 Feb 2026
We recently had our bedroom ceiling vaulted by Joel and the team, and we couldn’t be happier with the experience. From start to finish the team were punctual, hardworking and genuinely pleasant to have in the house. They went out of their way to minimise disruption to our day-to-day life and left everything clean and tidy at the end of each day, which we really appreciated. The finished vaulted ceiling looks fantastic and has completely transformed the room. We were so impressed with the quality of their work and professionalism that we’ve since asked them back to replaster our landing and stairs and fit new carpets. We would definitely recommend them without hesitation.
Hemp Construction
Rating: 4.9 out of 5
Extension Builder in Devizes
eco-friendly recycling/construction company based in Standerwick near Frome, We do everything from the ground up, new builds, extensions , loft conversions and ground work. We are also registered with the council so we can do DropCurb/Highway work ect Sustainable insulation , thermal hemp products giving you better rating on your EPC report (energy saving) and good for the environment.
Get in touch
Latest review:
Driveways (Paved & Loose)- 16 Jan 2026
Absolutely marvellous, couldn't be happier. Ryn is a great, positive character and team do a fantastic job no matter what the weather and make a good job perfect. We couldn't recommend them highly enough, worth more than 5 stars.
JR Tree and Land Services
No reviews yet
Extension Builder in Devizes
We are a small business with over 10 years experience we can undertake jobs from landscaping, fencing, tree surgery and hedge cutting. We offer maintenance contracts but can also design and build custom flat back sheds, out buildings and summer houses. On top of all of this, we are also trained in building work and have previously owned and run a construction company - extensions, house renovations and building work
Get in touch
Sean loft
Rating: 4.5 out of 5
Extension Builder in Devizes
Groundwork’s , knock through , footings , Concreting, patios , soak aways , drainage , steel installs , demolition , fencing , block and brick work , block paving , clearances….
Get in touch
Latest review:
Conversions - General- 28 Sep 2025
Sean did an excellent job- his communication was outstanding, he did exactly what we asked him to do and left everything tidy afterwards. Would definitely use him again and recommend him to others.
J.halliday
No reviews yet
Extension Builder in Devizes
halliday builders- over 25 years of experience offering bricklaying to general building extensions new builds and more.we carry out all your general building work. Our work is always carried out professionally and unique to a high expectation. We take pride in all our work to make sure every job is efficient and finnished to the highest expectation we offer many trades within us to make sure every job is completed.we look forwards working with many clients who need our service.
Get in touch
ZH Carpentry
No reviews yet
Extension Builder in Devizes
8 years experience in general carpentry and building. All aspects of carpentry from loft conversions to hanging single doors. Friendly and reliable, feel free to check my socials to see more work @ZHCarpentryandBuilding
Get in touch
Zjn building services
No reviews yet
Extension Builder in Devizes
I am a stonemason based in the vicinity of bath, I am a sole outfit unless the work requires, take on all small building projects from garden wall repairs, and patios to the replacement of masonry window or door surrounds.
Get in touch
John Bodman Ltd
No reviews yet
Extension Builder in Devizes
We are currently booking work for 2024. General Building Company with over 50 years experience. All aspects of work undertaken, from extensions to houses, renovations and repairs. New Builds-NHBC registered builder.
Get in touch
PSB CONSTRUCTION & PROPERTY DEVELOPMENTS LTD
No reviews yet
Extension Builder in Devizes
A small company based in Melksham, but covering all of Wiltshire. Qualified in Bricklaying and Carpentry but vast experience in Groundworks and Landscaping also.
Get in touch
T & G DOBBIN Complete building services
No reviews yet
Extension Builder in Devizes
T & G DOBBIN Complete building services Carry out new build extensions, alterations, renovation work and all carpentry requirements. Full bathroom and kitchen renovations and all property maintenance. 40 years experience in the construction industry with our own in house fully qualified plumber. As the company title says we are the complete building service.
Get in touch
Electrical & general maintenance
No reviews yet
Extension Builder in Devizes
I have been in the building industry for 30 years. I have acquired lots of knowledge in all trades which help in providing a top level service. I have been working as an electrician for 20+ years. I have 5 million public liability insurance and am registered with the NICEIC my governing body.
Get in touch
16 Groundworks
New on MyBuilder
Extension Builder in Devizes
Ive been in groundworks for 31 years now mainly in new build residential sites putting in the roads and foundations for new houses and then installing all the drains. Once built we carry out all the finishings like the patios, drives and landscaping so it's ready to handover to move in. Generally sites have ranged from 50-150 plots with different style houses. Im now moving away from this to start on my own and not for the big companies anymore. All contractors should have a minimum cscs/cpcs qualification when in construction to prove they have been suitably trained. I also have my smsts which is a site mangers qualification so this shows that I have the experience and knowledge to do the job to a high quality and safly. Also now specialised in resin paths and driveways.
Get in touch
Lewis building limited
No reviews yet
Extension Builder in Devizes
Lewis Building specialises in expert masonry, delivering high-quality brickwork, blockwork, and stonework for domestic and commercial projects. With years of hands-on experience, we pride ourselves on precision, durability, and attention to detail in every job, whether it’s extensions, garden walls, fireplaces, or bespoke stone features. We work closely with clients to understand their vision and provide practical solutions that combine structural integrity with aesthetic appeal. Fully compliant with building regulations, our masonry work is built to last, with careful preparation, accurate leveling, and high-quality materials. From traditional brickwork to modern block construction and natural stone, we bring skill, craftsmanship, and reliability to every project. Our professional approach ensures projects are completed on time and to the highest standards, earning the trust of homeowners, developers, and contractors alike. At Lewis Building, we are passionate about the craft of masonry and committed to delivering work that stands the test of time.
Get in touch
Brickwood Construction and Developments LTD
Rating: 4.5 out of 5
Extension Builder in Devizes
Brickwood Construction and Developments LTD, directors Chas Morris and Ben Ryan. Between the 2 directors we have over 30 years experience in the construction industry and well over 100 years combined with the rest of the team. We do all aspects of building work from kitchens to extensions to new builds. We can help with any of your construction needs from design to build.
Get in touch
Latest review:
Extensions- 5 Feb 2021
We have had an extension and complete reconfiguration of our ground floor space to include a completely new utility, shower room and large kitchen/dining/living area with newly fitted kitchen. Brickwood have done a brilliant job for us. They did exactly what they said they would to a very high standard of workmanship. They kept us in the loop at all times. Their workforce are very personable, always respectful that they were working in our home. The directors - Ben, Chas and Fabian - are extremely approachable, solution-focused and hard-working. They weren’t phased by any of the unforeseen issues or COVID related supply difficulties. They always found a way forward. They made sure that all the relevant structural engineering and building regulations certificates were obtained. I cannot recommend Brickwood highly enough. It feels as though we have a ‘new house’.

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

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

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

What are the hourly rates of extension builders in Devizes?

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

Find extension builders in Devizes with MyBuilder

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

Step 2: Compare different extension builders in Devizes

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

Step 3: Hire Devizes extension builders with confidence

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

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

What to ask a Devizes extension builder before hiring?

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

An extension builder in Devizes 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 Devizes 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 Devizes?

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 Devizes 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 Devizes 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 Devizes

Can an extension builder in Devizes help with planning permission?

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

Many Devizes 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 Devizes help with materials and finishes?

Yes, most extension builders in Devizes 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.