Extension Builders in St Austell

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Some of our top rated extension builders in St Austell

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BBR carpentry limited
No reviews yet
Extension Builder in St Austell
BBR Carpentry and Construction are a professional and reliable construction company covering the whole of Cornwall. Whether your looking to build your dream home or renovate/extend your current home look no further we will help you through the design, build and completion of your project.
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Julian Bursill Property services
Rating: 4.7 out of 5
Extension Builder in St Austell
I discovered my passion for building work to earn money while studying business at both college and university, 25 years later I have never looked back. I have three children and been with my wife for over 25 years.
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Latest review:
Conversions - General- 28 Feb 2016
Julian was very friendly, flexible and capable in completing a wide ranging job for us; including knocking through a wall to fit a new doorway, bricking up a door way and replacing it with a new window and helping design and construct an above ground fully insulated wine cellar. He also helped with the various building certification visits (which was very helpful as we had limited knowledge of the requirements). We found Julian's advice on construction materials and practicalities very helpful and were very happy with the clarity and level of costs/timing quoted at every stage. He was also flexible and understanding to changes/additions to the scope of work during the project. Julian seemed to be very happy to work to our timetable in terms of work and budget. After and during all the various stages of work Julian made sure to leave the house in good order, so the work was not too disrupting to our lives. We were very happy and would definitely use Julian again (and recommend others to do so).
Colvin Builders Ltd
No reviews yet
Extension Builder in St Austell
40 years experience.new build housing and extensions, renovations, stonework, general maintenance.
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Estuary Building and Plumbing LTD
No reviews yet
Extension Builder in St Austell
Estuary Building and Plumbing LTD have been running for the past 10 years and have completed various projects from commercial toilet blocks to single story extensions, we cater for any job big or small. We specialise in renovation works and work on listed buildings. We travel all over Cornwall.
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K & M Building and Landscaping Services
No reviews yet
Extension Builder in St Austell
Hello! Between me and Mike we have around 25 years experience and have a wide range of skills and abilitys; Carpentry Masonry Groundworks Landscaping Kitchen fitting Bathroom replacements Plastering Project management Loft Conversions And more, see pictures. Feel free to call us or find us on Facebook.
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MR Carpentry
No reviews yet
Extension Builder in St Austell
Trusted local business with 10 years of hands-on experience providing carpentry services to builders and contractors across Cornwall. We specialise in new builds, extensions and renovations. From bespoke builds to home renovations, I’m here to bring quality craftsmanship and attention to detail to every project. 🔨 New builds | Extensions | Renovations 📍 Cornwall
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Whyte's Building Contractors
Rating: 5 out of 5
Extension Builder in St Austell
A medium size family run Father & Son Builders with an established team. All trades covered with over 48yrs experience in our team we can take care of your whole project under one roof. Qualified tradesmen with a wealth of experience & knowledge specialising in domestic conversions, extensions and renovation works. No matter how big or small we cater for all while working to a high standard. Check our reviews for an insight to the quality of service and workmanship we provide along with customer care. Covering a wide area of the Southwest; Cornwall and Devon, Exeter to Lands End.
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Latest review:
Extensions- 30 Jan 2025
I was quite concerned before we started this job about the stresses of an extension with other things that were happening in my family life. Alan was a star from the beginning, he has always done what he said he would, he has set our minds at rest at each step of the process and kept us informed throughout. The costs were what he said at the beginning unless we negotiated otherwise. The boys on site were fantastic, I have two young children and they were lovely with them as well. The build went really smoothly and I can honestly say they have done a brilliant job, we are thrilled with the final build and it has made a huge difference to our lives. Absolutely fantastic all round.
Molyneaux Builders Ltd
No reviews yet
Extension Builder in St Austell
Looking for professional and affordable building services in Cornwall? Our builders provide expert New Build Construction, Extensions, Renovations and Groundworks in Cornwall. Molyneaux Builders Ltd are a well-established, reputable, family-run business that covers the whole of Cornwall. Priding ourselves on high quality work and excellent customer service, we rely heavily on recommendations and exceptional word of mouth. As a local contractor company, we are proud to have a proven track record for delivering construction projects and new builds on time, to a high standard and within budget. Striving to provide a service second-to-none, we work closely with each and every one of our clients to understand their needs to design a bespoke solution tailored to their budget and requirements.
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Red rock construction
Rating: 5 out of 5
Extension Builder in St Austell
We are a small family firm we cover all aspects of building work for renovations and new build homes and extensions as well as heritage restorations including traditional stone and lime work.i have worked in this industry for over 35 years and my sons now have 8 and 9 years in the trade . We are always approachable, polite, clean, and tidy and professional. I am fully insured and have a decent portfolio of completed jobs with recommendations
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Latest review:
Stonemasonry- 20 Jan 2020
A very conscientious and amenable person to work with. He completed the work efficiently and went out of his way to help my father. I would very happily recommend him.
Rob.S.General Builder
Rating: 5 out of 5
Extension Builder in St Austell
I passed my apprenticeship in 2010 in bricklaying with all the appropriate certificates. I have a portfolio of work I have done and been part off. I've been in the building trade since 2005 doing all aspects of the trades. I have recently left my position as site foreman for my employer to start on my own.
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Latest review:
Conservatories- 1 Feb 2026
Rob addressed the issues with our leaking conservatory roof the same day that we got in touch with him. He is a very pleasant and efficient person. We will be seeking his expertise again.
Virtue Contracting
No reviews yet
Extension Builder in St Austell
We are a property maintenance/construction company. Between myself and my partners we have over 75 years experience between us in various aspects of the building trade. We cover any work from as small as cleaning gutters or hanging doors to full renovations and new builds. Our service to our customers is paramount on a proactive or reactive basis, as well as the safety and well being of all our employees.
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D Ashwin
No reviews yet
Extension Builder in St Austell
High quality and hard working
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GM Haus Ltd
Rating: 5 out of 5
Extension Builder in St Austell
Providing the highest standard of work, accredited members of the federation of master builders and trustmark scheme. We are a team of friendly, highly skilled craftsmen covering all aspects of construction from new builds, timber frames, bespoke joinery, renovations and kitchen fitting. We also have access to masons, roofers, plumbers and electrician, completing our team. Our team are fully insured, first aid trained, have full qualifications and a combined 40 years experience in construction.
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Latest review:
Kitchen Fitting- 14 Oct 2018
Sam did a very professional job on our kitchen and down stairs toilet cupboard. He kept us informed of his progress and always made sure that the works progress and completion was to our expectation. The work was started and fineshed on time and within the budget we had planned. All areas were left in a clean and tidy state.
John Wilson
Rating: 5 out of 5
Extension Builder in St Austell
I am a Carpenter & Joiner with over 40 years experience in the trade working mainly on my own but using other trades as needed.
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Latest review:
Kitchen Fitting- 13 Jul 2015
Was able to help out immediately as we were in a very difficult situation. Sorted within the day. Thank you. Will be employing again for more carpentry.
I Jenkin Building Contractor
No reviews yet
Extension Builder in St Austell
Focused on providing quality results for customers and job satisfaction for myself
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Callum Craddock
No reviews yet
Extension Builder in St Austell
Hard working very knowledgeable of the trade been doing the trade for 7 years, went to college to get level 2,
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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.