Extension Builders in St Austell

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Some of our top rated extension builders in St Austell

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JE Build Limited
Rating: 5 out of 5
Extension Builder in St Austell
Father and son building business with over 50 years experience. We offer the complete building service finished to a very high standard. Quality tradesmen NVQ2 and NVQ3 qualified. We specialise in extensions and complete refurbishments. We will only leave the job the customer is 100% satisfied.
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Latest review:
Joinery & Cabinet Making- 15 Mar 2018
Polite and Friendly and listens to the clients' needs and finds solutions to the problems. Very good communication and kept me well informed. Excellent workmanship, really pleased with the finished job. Very reasonable quote. Joe came and solved the technical issues with the job. Worked his schedule around me. Turned up on time, did a full days graft(8:30-6), cleaned up afterwards. Took everything in his stride. Found ways to re-use materials to reduce cost. No hidden surprises. Gave different payment options, and advice on how to preserve the doos. Can not rate Joe highly enough. I fully recommend him and will be hiring joe again.
Pendragon Builders Limited
Rating: 5 out of 5
Extension Builder in St Austell
I carry out a wide range of building work. From basic building maintenance to new build houses. Specialist flat roof installation, commercial and domestic. I can prepare drawings for planning applications and building control. With over 30 years experience in many trades.
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Latest review:
Extensions- 10 Nov 2019
Great service, willing to listen to ideas and adapt where needed. Kevin and the team have worked around us using the house as a childminding business and planned each stage of the build to minimise disruption. They have inputed their design ideas which as made the extension even better than planned! The quality of the building work is very good. I would recommend them.
D.Wicks General Building & Plastering
Rating: 5 out of 5
Extension Builder in St Austell
General Builder & Plasterer With over 15 year’s experience. No job to big or to small with reasonable rates
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Latest review:
Plastering- 1 Dec 2024
Start to finish an excellent job. Don't be put off by the low number of reviews for this company starting out for himself. Communication, work ethic, and standard of work excellent. Can't rate him highly enough. Will not hesitate to hire him again.
Barrett construction SW
Rating: 5 out of 5
Extension Builder in St Austell
Here at Barrett Construction we aim to make your dreams and ideas a reality while leaving you overwhelmed with our services .Our quality assurance begins with our initial contact with you the customer and also the advice we provide. Each stage of our work is set to outstanding standards. Whether you're looking to expand or refine your home with either a complete new build-conversion-extension-renovation or general maintenance inc landscaping/ groundwork’s we have you covered along the way.
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Latest review:
Demolition- 2 Sep 2021
Two fast and efficient young men did a very professional job,I would deffinatly hire them again.
Mid Cornwall Masons
Rating: 5 out of 5
Extension Builder in St Austell
Ex Royal Engineer Mid Cornwall Masons with over 20 years experience in the trade. I offer a very high standard of work and attention to detail from start to finish. Hard working fast reliable team. I specialise in stone work and all aspects of historical buildings preservation and restoration, working on buildings over 450 years old, We offer very competitive prices (materials and labour) All work is fully insured and guaranteed Working to the highest of standards from start to finish .
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Latest review:
Damp Proofing- 28 Feb 2021
Laurence did a big damp proofing overhaul in our annex which involved stripping walls out and rebuilding them amongst other things. Laurence is friendly and takes pride in his work. He will repeat or re-do something if it is not just perfect. He is great at keeping his work area clean and tidying up. He did a few finishing bits and bobs on our annex a few weeks later and even hoovered again! The job took a little longer than planned because Laurence and his team were so busy, but I can't hold that against them because the finished product was just perfect with attention to detail. Laurence is always professional and friendly. The delays were certainly worth the wait. I would wholeheartedly recommend Laurence and his team.
Andrew Mears
Rating: 5 out of 5
Extension Builder in St Austell
At AKM Carpentry Ltd, we specialize in offering bespoke joinery, custom kitchens, and built-in furniture that cater to your individual style and needs. Our experienced craftsmen blend traditional methods with modern innovation to deliver stunning, functional pieces that enhance your living spaces. Whether it's an elegant kitchen design or tailored storage solutions, every project is executed with meticulous attention to detail and an unwavering commitment to quality. Transform your home with AKM Carpentry Ltd, where your vision is brought to life through exceptional craftsmanship.
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Latest review:
Carpentry- 28 May 2022
Great communication, great workmanship, very friendly and top service all round. Will be using again in future!
Morgan Pascoe Building
Rating: 5 out of 5
Extension Builder in St Austell
We are a local building firm, undertaking work from fencing and decking to complete renovations and everything in between! We work closely with other trusted tradespeople to ensure a stress free high quality job throughout.
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Latest review:
Carpentry- 19 Jan 2023
Morgan also did some other jobs for me which I was really pleased with (covering pipes in kitchen, putting in a cornice, doing flooring and shelves for old airing cupboard). He did well to put in a wood surround for the gate and, when I wanted him to do something different in terms of the lock, he was very flexible and came back and did this despite the rain and wind.
Gareth Bilkey Building Contractor
Rating: 5 out of 5
Extension Builder in St Austell
I have pride in every job that I do as a general builder within the trade since leaving school, I specialise in masonry work such as plastering, rendering, skimming and other general building work. I have knowledge and expertise within stonework, new builds and extensions. A special interest in tiling and paving.
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Latest review:
Bricklaying- 2 Dec 2016
Gareth is a brilliant tradesman, he has a keen eye for detail and goes the extra mile to achieve the perfect finish. We have had many positive remarks about his workmanship and if you are looking for someone to build for you we couldn't recommend him more highly. He was here every day on time and works really hard. Gareth gave us a job price which was very competitive and stuck to it. We would definitely use him again.
Holloway Electrical
Rating: 5 out of 5
Extension Builder in St Austell
Holloway Electrical is your local specialist that offers a fully qualified, reliable service all aspects of electrical installation works. From full domestic rewires right down to changing a light fitting. No job is too small. We offer competitive prices and a reliable service. Member of Napit Approved Installer scheme and TrustMark. All works carried out comply with latest versions of IET Wiring Regulations BS7671 & Part P Building regs. Holloway Electrical is a contractor you can trust.
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Latest review:
Electrical- 11 Jul 2016
Very happy with Jamie's work.
Lemara Developments
Rating: 5 out of 5
Extension Builder in St Austell
Hello, my name is Paul. I have over 15 years experience in the building trade. I am friendly, reliable and always complete work to the highest of standards. I take great pride in being able to offer a high standard of work at competitive prices. From a leaking tap to a full bathroom installation or a small plaster repair to a complete new build. Please get in touch for a free quotation.
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Latest review:
Plumbing- 22 Jan 2021
work completed and he was very professional. Very reasonable price as well.
tlm building
No reviews yet
Extension Builder in St Austell
ive been in the building game for 7 years and I take on work from landscaping plastering block work timber framing and much more
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Gough construction
Rating: 5 out of 5
Extension Builder in St Austell
General building and roofing
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Latest review:
Conversions - General- 27 Mar 2025
From start to finish Ant was a pleasure to deal with, communication 10/10, him and his team arrived at the time arranged and worked extremely hard, the end result is spot on, and Ant knows he’ll be back for further works soon ! Cheers mate !
GL Masonry
No reviews yet
Extension Builder in St Austell
On the trowel masonry Brickwork company covering Cornwall, specialising in all aspects of brick, block, stonework. Anything from foundations, garden walls to new build traditional and timberframe masonry, plastering works also with over 20 years experience. Feel free to drop me a message or look up on the trowel masonry online
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Harayes
Rating: 5 out of 5
Extension Builder in St Austell
CAD designs, specialist restoration, renovations, remodelling, property management, disabled adaptation specialists more… We also have a sister company providing epoxy resin floor and worktop installs (Cornish Bespoke).
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Latest review:
Plastering- 9 Oct 2018
Very pleased with end result and happy to recommend
AJT Construction Ltd
Rating: 5 out of 5
Extension Builder in St Austell
Established for over 25 years, we can do everything from putting up a shelf to building a new house. My company has undertaken complete house renovations, extensions and we specialise in quality kitchens and bathrooms. I have a number of repeat customers who will happily give references for our friendly approach, reliability and attention to detail. I pride myself on my ability to listen to what you want and work with you to achieve what you are looking for. See more examples of my work on my Facebook page AJT Construction Ltd.
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Latest review:
Extensions- 20 Jul 2024
Andy has just completed a large extension and renovation of my house and I can't recommend him highly enough. His original quote was very fair, and he kept me abreast of any changes that occurred as we went along. Andy (and his colleague Darren) worked very hard to make our ideas a reality. He offered creative solutions to issues as they came up, and was even happy to visit during the weekends to get the last bits of snagging done. His tiling in particular is exceptional (3 bathrooms done), and he even turned his hand to building us some built-in wardrobes and a huge bookcase. He's honest, reliable, hardworking, knowledgeable, and fun to have around. If you've got a building job I'd seriously consider adding him to your shortlist. You won't regret it.
Jarek Building and construction
Rating: 5 out of 5
Extension Builder in St Austell
Hi, the main aspects we deal with are tiling, bathroom assembly, plasterbording, plastering, painting,bricklaying,flooring, stud walls, timber frame construction. The experience we have allows us to finish every project in the budget and make the customer happy.
Get in touch
Latest review:
Bathroom Fitting- 28 Dec 2025
Great guy. Quick and good value

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

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 St Austell 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 St Austell who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in St Austell?

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

Find extension builders in St Austell with MyBuilder

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

Step 2: Compare different extension builders in St Austell

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

Step 3: Hire St Austell extension builders with confidence

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

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

What to ask a St Austell extension builder before hiring?

Before hiring an extension builder in St Austell or extension building company in St Austell, 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 St Austell?

An extension builder in St Austell 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 St Austell 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 St Austell?

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 St Austell 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 St Austell 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 St Austell

Can an extension builder in St Austell help with planning permission?

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

Many St Austell 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 St Austell help with materials and finishes?

Yes, most extension builders in St Austell 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.