Extension Builders in Dorset

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

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Some of our top rated extension builders in Dorset

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SPAW Construction Ltd
Rating: 5 out of 5
Extension Builder in Dorset
SPAW Construction Ltd is a Bournemouth based groundwork and construction company offering a comprehensive and professional service to the commercial and private sectors. Our experienced, competent and qualified team specialise in primary/secondary structural development including but not exclusive to; substructure, foundations, drainage systems and groundworks completion. Ultimately your project is our business and we are fully committed to making it a success.
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Latest review:
Waste Clearance- 25 Oct 2016
What a fantastic professional company! So glad I chose them. I wanted a concrete slab removed from my garden. Their quote came quickly and the price was reasonable for the work involved, which included removal of all debris. When I phoned to arrange a start date, I was fortunate that some of their workmen were in my area; about to finish another job, and so they were able to fit in mine immediately! The three workers were extremely hard working, polite and efficient. When the job was finished I was contacted to ensure that I was totally satisfied; which I was - I have no hesitation in recommending Spaw Construction. I would definitely use them again.
AUREX DEVELOPMENTS LTD
Rating: 5 out of 5
Extension Builder in Dorset
Aurex Development is a high-end construction and property-development company based in Bournemouth, covering Dorset, the South West, and nationwide for the right projects. We specialise in premium residential building, roofing, refurbishments, and extensions for homeowners, landlords, and investors who expect quality, reliability, and a professional finish. With strong hands-on experience across roofing, structural works, and full property renovations, we manage projects from start to completion with attention to detail and clear communication throughout. Our services include: Roofing installations, repairs, and replacements Full property renovations Extensions and structural works Brickwork and external construction Kitchens, bathrooms, and finishing Project management We focus on durability, clean workmanship, and delivering every project on time and to a high standard. Aurex Development – Precision in construction. Excellence in finish.
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Latest review:
Painting & Decorating- 25 Apr 2026
Went out to tender for an emergency redecoration following a tenant eviction, the Aurex Team were prompt and professional and met on site at short notice and had the quote back the following day, they put a team of decorators in and completed prep work, emulsion (6 bedroom house) and gloss work all round, job completed in 6 days to a decent standard and we also bounced them over to another property mid job to give a quick turn round for another new tenant. We will be using Aurex Developments again
S@j building
No reviews yet
Extension Builder in Dorset
I have a very wide experience in the building from under the ground up to the roof I have built house’s start to finish for 20years
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Sticks and Stones Construction
Rating: 5 out of 5
Extension Builder in Dorset
I'm an honest, reliable, hard working builder who offers a friendly, clean and tidy service. I'm a qualifeied bricklayer and plasterer, however i have experience in patio laying, driveways, fencing, tiling and roofing.
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Latest review:
Groundwork & Foundations- 2 Dec 2019
Ali, was polite, professional and helpful when managing my requested works. All proposed works were performed as described, to time and cost. I will happily refer, recommend Ali for future works. Regards, James
Wrey Architectural Design
Rating: 5 out of 5
Extension Builder in Dorset
Wrey Architectural Design is based in Bournemouth and cover the South of England. We offer a professional design service and with extensive construction experience, knowledge of building techniques and regulations we will take on any design project from small to large. Professional construction qualifications and references available on request.
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Latest review:
Extensions- 5 Dec 2022
Ian drew up the plans for our extension and the installation of an en-suite. We found him to be professional, helpful and understanding from the very start of the process. Would definitely recommend him.
Edenbridge Property
Rating: 5 out of 5
Extension Builder in Dorset
At Edenbridge we are focused on providing a high quality service with complete customer satisfaction and will do everything we can to meet your expectations. From a new extension to a bespoke garden room please contact us for a competitive quotation. All workers are fully insured.
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Latest review:
Extensions- 21 Dec 2017
Kevin and his brother carried out a single storey extension to the rear of our property. The extension was built as per the drawings we supplied. He was happy to sort out any issues we came across and was very reliable and trustworthy, always turning up when he said he would and was very approachable and happy to explain things during the build. Would recommend for similar builds.
QBS Building Services
No reviews yet
Extension Builder in Dorset
QBS Building services, with over 30 years experience, we pride ourselves on the quality of our work, our scope of work covers new builds to extensions, to stonework to patios, with only qualified tradespeople, giving the best attention to detail, giving you the best outcome for any of your projects.
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AUBS Construction
No reviews yet
Extension Builder in Dorset
Experienced Team here at Aubs construction Ltd, we have over 30 years experience in the trades and have been completing all kinds of construction work with 5 star reviews on Google. We Fit a lot of magnet kitchens as we come recommended by them and also work alongside bathroom elegance for bathrooms, there’s no job to small or to big which we wouldn’t be happy to take on, so if your looking for the perfect job with a perfect finish then please don’t hesitate to contact us, we’d be happy to help.
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PROEVO Developments Ltd
Rating: 5 out of 5
Extension Builder in Dorset
We're here to turn your property dreams into reality. From concept to completion, trust PROEVO for a seamless property transformation. Why choose PROEVO? *Committed to excellence and customer satisfaction *Competitive pricing with a no-obligation quote Let's embark on a journey of transformation together, join the Property Evolution today!
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Latest review:
Plumbing- 13 Feb 2025
Attended an urgent job straight away. Great communication and completed all the works to a high standard.
Two Counties Construction
Rating: 3.9 out of 5
Extension Builder in Dorset
Company now in liquidation. Account to be deleted as soon as My Builder respond
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Latest review:
Windows & Doors (uPVC & Metal)- 14 Sep 2024
We were happy before it rained and we thoroughly checked their work. They left mess, razor sharp edges on the glass, and glass overhanging neighbours land a little bit. We asked them to return to remedy this which they said they would do this coming Tuesday. Since then we have also noticed that they have cut our glass too short, cut the new hardwood at too steep an angle which was bodged in with wood filler, and now it's rained this new roof has massively leaked. In places where the glass is cut too short and even along the length of one of the new wooden beams; must be missing a bit of silicone. It is now Saturday and we have called them 2 days ago on Thursday, yesterday Friday we called and texted, and today again we both texted and one of us called them, to check if they are still coming on Tuesday or not. 3 days is not unreasonable to return a call or text just to confirm either way. More rain is due between now and then, concerned about lack of communication and quality of work.
Jubilee Builders Ltd
No reviews yet
Extension Builder in Dorset
We are here to make your dream home a reality! Our team of building and carpentry specialists have over 25 years of experience. We have built up a strong reputation for maintaining excellent communication with our customers, always making sure that they are happy every step of the way. We will provide you with a complete service from initial design all the way through to completion. Our projects are always timely, clean and to the highest degree of craftsmanship.
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Octavian Landscape & Construction
No reviews yet
Extension Builder in Dorset
My name is Octavian Nicolaev and I have an experience of over 10 years in Landscaping. I graduated the University of Horticulture with a specialization in landscaping design. In this country I had to work mixed in landscaping and construction, so I accumulated a lot of experience in construction in this country and I can say that I am able to build by myself any client asks me.
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Oak Dowel Carpentry
Rating: 5 out of 5
Extension Builder in Dorset
My name is Tomasz, carpenter-joiner by trade. Oak Dowel Carpentry is reasonably new to the area . My experience and expertise ranges from general carpentry and joinery, through furniture making, custom build wardrobes, kitchens, bespoke furniture, real wood and engineered flooring, framing and partitioning, doors and windows, decking and others. Also providing other building services as decorating, tiling, general building etc.
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Latest review:
Very professional approach, work done with attention to detail. Tidy, reliable and quick, just as it should be! Will definitely recommend!
Grant ellis
No reviews yet
Extension Builder in Dorset
All Aspects of brickwork stone work And alterations
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WPD Building Services LTD
New on MyBuilder
Extension Builder in Dorset
With over 30 years of combined experience in the building industry, we provide a complete range of construction services, from groundwork and structural building through to the finishing touches that bring your project to life. Whether you're planning an extension, renovation, new build, kitchen installation, bathroom refurbishment, or general building work, our skilled team delivers high-quality workmanship at every stage. We work with trusted professionals across all trades, allowing us to manage your project from start to finish with efficiency and attention to detail. Customer satisfaction is at the heart of everything we do. We take pride in our reliability, professionalism, and the quality of our work, ensuring every project is completed to the highest standard and every customer is left happy with the finished result. We cover most of the South of England and have experienced tradespeople available across all aspects of the building industry.
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Laytonscapes building & property renovations
No reviews yet
Extension Builder in Dorset
Laytonscapes building and property renovations provides reliable, high-quilty building, renovation, repairs and property maintenance services. We pride ourselves on excellent workmanship, honest communication, and completing every project to a high standard, whether its a small repair or full renovation.
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What types of services are offered by local extension builders in Dorset?

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

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

What are the hourly rates of extension builders in Dorset?

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

Find extension builders in Dorset with MyBuilder

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

Step 2: Compare different extension builders in Dorset

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

Step 3: Hire Dorset extension builders with confidence

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

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

What to ask a Dorset extension builder before hiring?

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

An extension builder in Dorset 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 Dorset 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 Dorset?

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 Dorset 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 Dorset 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 Dorset

Can an extension builder in Dorset help with planning permission?

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

Many Dorset 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 Dorset help with materials and finishes?

Yes, most extension builders in Dorset 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.