Extension Builders in St Austell

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Some of our top rated extension builders in St Austell

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Swift Solutions
Rating: 4.8 out of 5
Extension Builder in St Austell
I have 20 years experience as an electrician and am part of a competent persons scheme meaning that I can self certify my own work. I specialize in all areas of domestic electrical work. I also have over 20 years of building and maintenance experience, which means I can undertake and oversee small building works such as extensions, bathrooms and kitchens from start to finish. I use bonafide sub contractors for all areas of the job to complete projects to a high standard.
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Latest review:
Bathroom Fitting- 21 Apr 2025
Initially we were in touch with Dan about the installation of an extractor fan, but on his visit to the property it was clear that he'd be the right person to do much more. Essentially, he re-furbished the whole property, with a new kitchen, re-designed main bedroom, new front and back doors, a new flat roof over the bathroom, new shelving in the front room, painting throughout and clearing a derelict gazebo in the back garden. We were very happy with the advice and work that we received from Dan, including the way he brought in a couple of sub-contractors such as for carpentary and roofing.
Lewis noble
Rating: 5 out of 5
Extension Builder in St Austell
Hello I am Lewis a bricklayer of 14 years experience & the proud owner of NobleLandscapes, we take on .Extensions .stonework .Garden walls /retaining walls .repointing .Newbuilds .patios .sleepers .General landscaping
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Latest review:
Bricklaying- 14 Feb 2025
Explained what I wanted and the job was well done at a very fair price. I found Lewis to be professional, friendly and polite. Won’t hesitate in asking him in the future for quotes for further work.
Building With Frames
Rating: 5 out of 5
Extension Builder in St Austell
BWF build to the highest standards with environmental and energy efficient consideration at all times. New builds to extensions in the South West area, using SIPS and Timber Frame with integrated renewable technologies.
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Latest review:
Steve built an insulated, wooden-framed workshop/studio for us in our garden. We are delighted with the final result which is attractive and well finished despite being built to a tight budget. Steve is extremely knowledgeable, experienced and professional with impressive skills both practically and as a project manager. A real strength was his ability to listen, and respond, to what we wanted. We found him flexible and considerate, keeping mess to a minimum and communicating well with us throughout. He took a pride in his work and was completely honest and trustworthy. Our project was completed on time and within budget. We would definitely ask stteve to do work for us again and would recommend him to friends.
K Stevens Builders
Rating: 5 out of 5
Extension Builder in St Austell
45 years experience as a mason and general builder. Renovations, new-builds, ground works, drainage and landscaping.
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Latest review:
Extensions- 27 Jun 2024
Kev and Louis did a great job on our project. They were friendly, tidy and considerate throughout the work and were happy to accommodate changes and adjustments as requested. I would highly recommend!
J Prescott Building & Plastering
Rating: 5 out of 5
Extension Builder in St Austell
I have been working within the industry for over 20 years on a self employed basis. Learning my skills with various established builders within my local area. I am a qualified plasterer which I have been mostly doing for over 10 years. This also includes work with lime products and have managed to build a repeat custom for various work needed.
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Latest review:
Plastering- 28 Jun 2017
James and associate carried out all works to a high standard despite some pretty poor weather!Very pleased and will use again.
Dan Steele
Rating: 5 out of 5
Extension Builder in St Austell
I have been working as a carpenter In Cornwall for 24 years and I am happy to travel anywhere within a 25 mile radius of Newquay. I have worked on a range of projects from just a simple decking to the construction and management of a whole house. I have an eye for detail and pride myself on quality workmanship for a fair price.
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Latest review:
I cannot fault Dan in any way. His work was exemplary. He was friendly, approachable and guided me through every step of the reconstruction process. He always arrived on time and went over and above what was expected of him. I trusted him and would, without question, give him my full recommendation.
Mtb carpentry
Rating: 5 out of 5
Extension Builder in St Austell
Fully qualified carpenter/joiner covering all aspects of carpentry. My aim is to complete the job to the highest standard and on time .15 years of on the tools experience
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Latest review:
Carpentry- 6 Aug 2025
Mike was quick to estimate and returned his quote in good time. He turns up when he said he would. His workmanship is very good and cleaned up any mess leaving our place very tidy. We are well pleased with the 6 new Oak doors fitted. We would have no problem in using Mikes services again.
A1 carpentry services
Rating: 5 out of 5
Extension Builder in St Austell
Im a fully qualified carpenter with 20years experience. I cover all aspects of carpentry from cut roofs to kitchens. We also undertake renovation work from one room to a whole house.
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Latest review:
Hard Flooring- 24 Sep 2024
Very pleasant to have in my home, excellent job, no fuss, cleaned up after himself...a proper professional, thanks
Jamie hawken
No reviews yet
Extension Builder in St Austell
Hi my names Jamie and I’m a self employed builder covering all aspects of masonry. I’m neat tidy punctual and work to a high standard if you have any questions feel free to ask.
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Mokas
Rating: 4.5 out of 5
Extension Builder in St Austell
We’re a small, family-run carpentry and construction company with over 23 years of experience. Our journey began in London, where our founder worked alongside the talented team at Ruddy Fit Out and Joinery. That’s where a true passion for woodwork and building craftsmanship was born — a passion that continues to shape everything we do today. Over the years, we’ve built a strong reputation among our clients for being punctual, reliable, and detail-oriented. We take pride in delivering work that’s not only solid and long-lasting, but also clean and beautifully finished. From first fix to second fix carpentry, we cover all aspects of joinery and construction, offering top-quality results on every project — big or small. Whether we’re crafting bespoke interiors or building complete homes, we bring the same dedication, skill, and positive energy to every job. We believe that great craftsmanship starts with passion — and that’s exactly what we bring to every home we help build.
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Latest review:
Carpentry- 28 Nov 2025
Awesome! Very skilled builder and also reliable. I highly recommend him!
Elliot Higginson Design & Build LTD
No reviews yet
Extension Builder in St Austell
EH Design and Build LTD: Your vision, Our expertise, One seamless process. At EH Design and Build LTD, we understand that building or renovating your dream space can be a complex and overwhelming undertaking. That’s why we’ve streamlined the entire process by offering and complete turnkey service, bringing all the essential elements under one roof. We’re not just builders, and we’re not just a design team- we’re a unique combination of both, working in perfect synergy to bring your vision to life. Our dynamic duo at the helm comprises Morgan our seasoned construction expert, and Elliot, our visionary design and management lead. With Morgan’s understanding of the building process and Elliot’s creative flair and project oversight, we ensure a seamless journey from concept to completion. What sets us apart is our ability to handle every aspect of your project in-house. From initial design concepts and planning permissions to the actual construction and finishing touches, we’ve got you covered. Whether you’re dreaming of a contemporary home extension, a stylish kitchen renovation or a complete new build, EH Design and Build Ltd is your one stop solution. Let us take the stress out of your project and turn your dream into reality.
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PR Developments
Rating: 5 out of 5
Extension Builder in St Austell
P. R.Builder groundwork s landscaping. Extensions newbuilds renovation work brick stone block work drainage plastering dry linning roofing patios all construction work undertaken .All work fully insured. References and photos if required.I have over 40years experience in construction and building problem solving and expertise to under take any problematic situations underpinning sureing and any drainage sewer problems free advice given. All work is warranteed .Very friendly and easy to work with and listen to what customers needs .Expert in drainage and water problems replace old drainage broken collapsed inspection chambers soakaways water treatment plants drainage fields. There isn't any problems the I can't overcome.
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Latest review:
Extensions- 21 May 2025
We recently had a one storage extension built by Phill and Angel and we are extremely happy with the result. He was professional, punctual, and easy to work with from start to finish. The quality of his work is excellent, and the new extension blends in perfectly with the rest of the house. Phill kept everything tidy and on schedule, and he made sure I was happy with every part of the job. I really appreciated his attention to detail and clear communication throughout the project. I would highly recommend Phill to anyone looking for a reliable and skilled builder. Thank you again for the fantastic job!
Drakes
Rating: 4.8 out of 5
Extension Builder in St Austell
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Latest review:
Handyman- 29 Apr 2026
Absolutely delighted with my flat pack assembly I would certainly recommend very prompt getting back to me does a brilliant job I wouldn’t hesitate in calling the firm again Thank you Ian.
M wilton
No reviews yet
Extension Builder in St Austell
Hi.I have been self employed for 13 years as a general builder.all aspects of the building trade undertaken from groundworks,blockwork,stonework,slab laying,excavation works,plastering,rendering,tiling etc
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RJC Building & Plastering
Rating: 5 out of 5
Extension Builder in St Austell
Hi, my name is Rich and I'm an independent builder and plasterer working all over Cornwall; I'm based in Newquay. I aim to provide a competitive and friendly service with the promise of a high quality finish. Hard working, punctual and reliable, I enjoy sharing my expertise and ideas with customers to help jobs run smoothly, and to the client's specification.
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Latest review:
Plastering- 24 Jan 2019
Highly recommended. Richard quickly came round to price up the ceiling to be plastered. He managed to fit me in at a time which suited me. He was clean, tidy and punctual. I have already recommended him to a friend.
EGD Renovations
Rating: 5 out of 5
Extension Builder in St Austell
EGD Renovations was founded in 1996 and is based in Newquay, operating throughout Cornwall. We specialise in full property renovations for private clients, including extensions, structural alterations, kitchen and bathroom installations, tiling, painting & decorating, and landscaping. We handle everything except electrics, plumbing, and plastering. To provide a complete service, we work closely with trusted electricians, plumbers, and plasterers, coordinating all trades and managing your project from start to finish. In 2021, we won a Cornish Buildings Award for outstanding restoration of an historic building, demonstrating our commitment to quality craftsmanship across all types of projects.
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Latest review:
Painting & Decorating- 15 Aug 2011
Absolutely fantastic job. Very professional from first contact to completion of the work. Reasonably priced, but the quality of the work was exceptional, with great attention to detail. Very flexible to get job completed on time, will definitely use again and can thoroughly recommend.

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.