Extension builders in Cornwall

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 5 (2 reviews)

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Some of our top rated extension builders in Cornwall

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Gds carpentry & construction
No reviews yet
Extension Builder in Cornwall
About Us - We are a small, established carpentry and construction company based in North Cornwall, specialising in high-quality finishes across all aspects of our work. With over 18 years of experience in the building industry, we have built a solid reputation for craftsmanship, reliability, and attention to detail. We take pride in delivering well-managed projects from start to finish, working closely with clients to ensure their ideas are brought to life to a high standard. Whether it’s bespoke carpentry, renovations, or larger construction projects, our focus is always on quality workmanship and clear communication. Much of our work comes through recommendations and repeat clients, and we are happy to provide references upon request.
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Oliver Douglas
No reviews yet
Extension Builder in Cornwall
I've been lucky enough to have spent the last 15 years building homes that are usually in excess of 2-3 million pounds, during These years my attention to detail I believe can't be beaten. The last 5 years i have been a site manager with anywhere up to 30 people on site, so dealing with clients architects and all other trades comes very easily for me .I specialise in natural stone and my work has had 2 awards and featured in grand designs catalogue multiple times. All aspects of building work can be undertaken by myself from digging footings and slabs to 2nd fixing carpentry. Every job, large or small scale will always have my full attention and dedication. So if your needing a garden wall building or your dream home then get in touch with me and I know you'll be very happy from the outcome
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Christopher Ayling
No reviews yet
Extension Builder in Cornwall
Hi I’m Chris I am a qualified carpenter of 13 years with experience in new builds, renovations, extension. I also have previous roofing work experience in slating and tiling again from new builds to complete replacement of existing roof.
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Mehrivan Lagos Group
No reviews yet
Extension Builder in Cornwall
We are a team of civil engineers with strong international experience in construction, refurbishment, and architectural finishes. With over 18 months of hands-on work in the UK, we have contributed to one of the country’s largest precast architectural fabrication operations. Before that, we successfully delivered more than 42 projects across Iran and Nigeria, ranging from residential renovations to large-scale commercial developments. Our background in engineering ensures that every project is completed with precision, structural understanding, and high-quality workmanship. We bring a global perspective, strong technical skills, and a commitment to delivering reliable, professional refurbishment and decoration services for every client.
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TP Builders
Rating: 5 out of 5
Extension Builder in Cornwall
We are a family run company . Can do anything from changing a light bulb to building a property. All property maintenance inside and out undertaken.
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Latest review:
Bricklaying- 19 Feb 2020
I would highly recommend TP Builders. They arrived early in the morning and worked non stop. We were really happy with the completed job and wouldn't hesitate to use this company in the future.
Steve Richards general builder.
Rating: 4.6 out of 5
Extension Builder in Cornwall
I have over 30 years experience in all aspects of building construction from footing to roof,fully insured and C&G approved. as a sole trader I pride myself on being reliable and hard working and covering all aspects of development.a good working invoromen is also important working closely with you the client to achieve your goals.
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Latest review:
Fascias & Soffits- 31 Aug 2025
Great Father and Son team. Took the trouble to overcome any problem and see the job finished to a high standard. Highly recommended. Thank you.
Simon Benney Carpentry and Building
No reviews yet
Extension Builder in Cornwall
Covering all aspects of construction. Carpentry 1st and 2nd fix, extension,bathroom refurbishments. The old cliche no job is too big or too small Excellent customer care is always must.
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Overland Construction (SW) Limited
No reviews yet
Extension Builder in Cornwall
We are building contractor who will undertake new builds, extensions and loft conversions. All aspects of construction are considered with free advice and quotations. Fully insured and testimonials are available upon request.
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A.M.Honey Building & Joinery
Rating: 5 out of 5
Extension Builder in Cornwall
I have gained a reputation for quality and service to the highest standards. My main objectives are always to achieve client satisfaction within time constraints and budget. Please check out my Facebook page to see more pictures of previously completed projects! Anthony Honey
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Latest review:
Anthony, commitment to our renovation project was outstanding workmanship which he and his team took immense pride in , we now have our dream home, our grateful thanks to them , they all have excellent skills and we are very much indebted to him,
Celtic builders
No reviews yet
Extension Builder in Cornwall
All areas of carpentry and landscaping as a team of two we cover all the fine carpentry works including most types of flooring. As well as slab laying and Cornish stone hedging also builds start to finish. With our tight nit trusted sub contractors for electrical and plumbing we have everything you need to build what you need.
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J Brown Building Services
No reviews yet
Extension Builder in Cornwall
J Brown Building Services, A reliable, diligent, accomplished tradesman.
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Scott Laity Carpentry
Rating: 5 out of 5
Extension Builder in Cornwall
We are now trading as S & T Carpentry Ltd offering Carpentry services across West and Mid-Cornwall. We take on anything from kitchen refurbishment to project managing large extensions. We enjoy great working relationships with our customers, suppliers and sub contractors.
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Latest review:
Carpentry- 21 Jan 2025
Scott and Tristan were an absolute pleasure to work with…. Their work was nothing short of perfection… they kept me informed on a daily basis and did the most fantastic job… I’m hoping they will come back and do more… I have highly recommended them to my friends and would highly recommend them to anyone… thankyou both for your amazing work
J R Hickson Building Services
Rating: 5 out of 5
Extension Builder in Cornwall
J R Hickson Building Services is a small business run by the founder Jack Hickson. Jack is a qualified, established builder, offering a wide range of building services covering renovations, refurbishments, new builds and excavations in West and Mid Cornwall.
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Latest review:
i can thoroughly recommend Jack and his team. Reliable, friendly, informative and with excellent communication skills. The job didn't go quite as planned, and Jack was flexible and in touch all the time. We will definitely be using him again. His plastering was excellent, and our tenant was kept up to speed every step of the way, which we all appreciated. Thank you
Scott Taylor
Rating: 5 out of 5
Extension Builder in Cornwall
We are a general building company and have nearly thirty years experience specialising in building and roofing work. We are fully insured and experienced in new builds, extensions, renovations, barn conversions etc and will also take on any maintenance jobs. It is of upmost importance to keep our customers happy and we will go above and beyond to do this.
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Latest review:
Extensions- 12 Nov 2017
Scott was professional, always ready to give advice, thorough and timely, keeping us up to date with the progress. The job was done quicker than expected and the price was adjusted accordingly. I definitely would recommend him and look forward to working with him in the future.
AP carpentry & Construction
Rating: 5 out of 5
Extension Builder in Cornwall
Established in 2006 with buiding and construction background.Fully qualified & insured. City & Guilds carpentry & joinery covering all aspects. With extensive experience. From joinery to timber frame and cut roofing .Plyed with a broad and time served building knowledge & skills .from ground works, form work, to block work ,plastering and rendering, cladding. from new builds built to latest specification to alterations ,conversions & renovations. A good long established network of trades.
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Latest review:
Extensions- 11 Oct 2024
Adam was very helpful and accommodation from start to finish. He completed our extension for us, adding drainage, a new warm roof, insulating and cladding the outside of the existing property and new extension, fitting doors and windows, adding stud walls, finishing the internals to plaster and fitting internal doors and skirting. He spoke to building control and worked with them to ensure the work was fully compliant with building regulations. He's was very accommodating with payments, which were completed in stages and we had a lot of trust in him because of this. He was flexible in terms of when he completed the work for us as well, which really helped. If we had any slight changes we wanted to make or we noticed any issues he was very fast to fix these and he ensured all of his work was carried out to a high quality. He is aways very friendly and positive and I would highly recommend him to anyone thinking of doing something similar.
Building Restoration Specialist
Rating: 5 out of 5
Extension Builder in Cornwall
Traditional approach to building, construction, restoration, renovation and repair. Qualified, competent and experienced.
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Latest review:
Guttering- 9 May 2018
Absolutely fantastic job. Worked like a trooper in all weathers. Nothing was too much Trouble and the work has been finished to a very high standard. Cleared up after himself each evening and worked through into the evenings often. Even the rain did not put him off and carried on working soaked through. If you are looking for a true expert for finlock guttering removal or replacement. Jason Shaw is your man. We had all concrete guttering around the bungalow removed and also removed from inside the conservatory. He made sure all openings were securely covered , taped up so we had no dust in rest of the house. We can highly recommend him .

Top rated Extension Builders

Our Extension Builders in Cornwall, are rated 5 out of 5 based on 2 reviews from customers like you.

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Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

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

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

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

What are the hourly rates of extension builders in Cornwall?

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

Find extension builders in Cornwall with MyBuilder

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

Step 2: Compare different extension builders in Cornwall

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

Step 3: Hire Cornwall extension builders with confidence

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

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

What to ask a Cornwall extension builder before hiring?

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

An extension builder in Cornwall 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 Cornwall 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 Cornwall?

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 Cornwall 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 Cornwall 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 Cornwall

Can an extension builder in Cornwall help with planning permission?

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

Many Cornwall 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 Cornwall help with materials and finishes?

Yes, most extension builders in Cornwall 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.