Extension Builders in St Ives, Cornwall

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Some of our top rated extension builders in St Ives, Cornwall

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B H Builders
Rating: 5 out of 5
Extension Builder in St Ives, Cornwall
B H Builders & property maintenance is a small building company in the heart of Cornwall, with over 20 years experience in all aspects of masonry and general building work from drainage right through to roofing. specialising in block/brickwork, plastering and rendering.
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Latest review:
Plastering- 23 Aug 2020
Ben was very professional and plastered my wall to a high standard. Very polite and tidy. Would definitely recommend and hire again.
Crofty Construction Ltd
No reviews yet
Extension Builder in St Ives, Cornwall
At Crofty Construction, we bring hands-on expertise, local knowledge, and a commitment to quality to every project we take on. Based in Cornwall, we specialise in residential building work — from extensions and renovations to structural repairs and bespoke finishes. With over 20 years of experience, our team combines practical know-how with a friendly, professional approach. We’re proud to offer clear communication, reliable timelines, and a clean, respectful worksite. Whether you’re planning a small upgrade or a major transformation, we’ll guide you through the process with transparency and care. We hold full SMAS Worksafe accreditation, are Gold members of Constructionline, and our team is SMSTS, CPCS, and CSCS qualified — ensuring your project is delivered safely, professionally, and to the highest standards. We’re fully insured, compliant with all building regulations, and happy to provide references from previous clients. If you’re looking for a builder who values craftsmanship and community, Crofty Construction is here to help.
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Williams carpentry & timber frame
Rating: 5 out of 5
Extension Builder in St Ives, Cornwall
WCTF carpentry and joinery company situated in Cornwall covering all aspects of carpentry, joinery and building. 1st & 2nd fix, renovations, new builds, custom cabinetry and wardrobes, kitchens, traditional cut and truss roofs. 15 years experience in the trade. All tools and required insurances for all aspects of the trade.
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Latest review:
Kitchen Fitting- 24 Oct 2023
Ash and Tom fitted our IKEA kitchen in our renovation project. They were absolutely fantastic. They problem solved various issues that arose with the kitchen, they have clearly huge amounts of experience with fitting kitchens and their carpentry background meant that the final product was brilliant. They worked quickly and effectively and got the job done in the time they said they would. They were kind and conscientious throughout. Would 100% recommend
lds specialised developments
Rating: 5 out of 5
Extension Builder in St Ives, Cornwall
Starting out. General handyman/builder (time served) Ground work (digger), electrical, plumbing, kitchens & bathrooms, carpentery, specialised spraying windows doors & kitchens 2k&1k, onsite metal fab, roof repairs, ICF trained,Ex panel beater/mechanic/sprayer, super yacht experience. Numerous self builds and renovation in UK and France. Have vast knowledge of products & practices across automotive, marine and building industries, allows me to solve problems. Emergency callout for above.
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Latest review:
Handyman- 6 Sep 2020
Very pleasant. Excellent multi skilled tradesman. We will definitely use him again Reasonably priced and would recommend to every body
Wynne Construction
No reviews yet
Extension Builder in St Ives, Cornwall
Wynne construction covers all aspects of building work, we offer a complete service from start to finish. With every job we undertake, we aim for the best possible finish and result to satisfy our customers wants and needs.
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West Cornwall Carpentry and Construction LTD
Rating: 5 out of 5
Extension Builder in St Ives, Cornwall
Hello, West Cornwall Carpentry and Construction is a family business. Our experience includes working for a high end furniture company and the past 30 years renovating, extending and building new builds for ourselves, now this last year we have started taking on projects for clients. We have a keen eye for detail and finish work to the highest standards. We are VAT registered, if that is an issue please do not shortlist us for work. Best Regards, The West Cornwall Carpentry and Construction team.
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Latest review:
Fascias & Soffits- 7 Jun 2024
Neat precise work. ( Several comments from neighbours about it.) Kept well informed as the job progressed. Left area very tidy and would use again.
ANNED DEVELOPMENTS LTD
No reviews yet
Extension Builder in St Ives, Cornwall
Anned Developments is a multi-disciplinary construction company delivering high-quality renovations, extensions, and new builds. With all trades working directly for us, we provide a complete service covering project management, engineering, and every phase of construction. We support both private clients and public-sector organisations, delivering reliable, fully managed building solutions.
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Atlantic Developments (penwith)ltd.
Rating: 5 out of 5
Extension Builder in St Ives, Cornwall
General builders.New builds,extensions,renovations and conversions. Over 25 years experiance based in St Just West cornwall. .
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Latest review:
Extensions- 23 Jan 2022
Given the complications on materials supplies, Matt and his team delivered exactly what I had asked for and discussed the build at every stage. I am extremely happy with the product and have been living in the build for a month now. Happy to recommend to anyone.
GTB Builders
Rating: 5 out of 5
Extension Builder in St Ives, Cornwall
I’m Gary, I’ve been in the trades for over 40 years covering various projects ranging from small repair work to building multi million pound houses. Im fully covered and insured and provide a reassuring process throughout the project. Using this app to fill space in the diary due to other customers having some delays. I cover all aspects construction. Some of services I provide are : New builds, Loft conversions, Extensions, Groundwork’s, Roofing, Summer house/sheds, 1st/2nd fixCarpentry, Kitchen/bathroom fitting, Internal/external doors and windows, Driveways, Full refurbishments and renovations, Masonry, Rendering/Plastering, Landscaping And more! Feel free to get in touch.. there are no jobs to big or small. Thanks, Gary.
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Latest review:
Roofing (Pitched)- 24 Feb 2026
I was very grateful to Gary and his team for getting me out of a hole when my 80 year old outbuilding roof was blown off by the January storm. From first to last he acted in a very professional manner by clearly outlining the issues that needed to be addressed and the way he would resolve the problem. I have nothing but praise for the whole experience and should misfortune ever come my way again I would, without hesitation, reach for the phone and ring him. When you find someone you can trust you invariably keep their phone number.
Black Lion Building Services
Rating: 5 out of 5
Extension Builder in St Ives, Cornwall
Here at Black lion building services we take a lot of pride in thinking outside of the box when it comes to making a house your home. We have a wealth of knowledge from many years in the building industry and can cover all your internal and external requirements
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Latest review:
Bricklaying- 8 Nov 2023
Tomos worked hard and did a goid job for us. Will use him again.
Mark Strick Carpentry
Rating: 5 out of 5
Extension Builder in St Ives, Cornwall
Apprenticeship served Carpenter with 20+ years experience in the construction industry. Friendly, approachable and a high quality of work delivered every time.
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Latest review:
Carpentry- 5 Sep 2020
Mark work has been exceptional. He is friendly whilst being professional. His time keeping has been spot on and he responds to queries quickly. No hesitation in recommending him. I will be using him again.
Osborn Construction
No reviews yet
Extension Builder in St Ives, Cornwall
All aspects of building works undertaken new build, renovations, from ground works too ridge, 20 years experience in the construction industry, fully insured
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James Vedmore Building
Rating: 5 out of 5
Extension Builder in St Ives, Cornwall
I'm a builder that thrives off good work and customer satisfaction. I work hard and I'm very punctual with a very good knowledge of the constitution industry. I love building and I want a successful business with customers happy with my work and happy to recommend me to friends and family.
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Latest review:
Exceptional commitment to pleasing demanding customers. Unusual attention to regular communication by txt Whatsapp and email throughout the process with thoughtful contributions to the evolving design and endless patience as we changed our minds. Excellent attention to detail and delightful approach to the whole process. First class team of other trades (electrician, painter, plumber) whom he project managed good humouredly and effectively. Remained on site throughout despite additional work to original specification and competing demands on his time. Extremely high standards of plastering, joinery and overall finish. Trustworthy and made the whole experience of house renovation a pleasure. No hesitation in recommending James. Will definitely keep him on speed dial for when we have more work!
Cornish Traditional Builders
No reviews yet
Extension Builder in St Ives, Cornwall
My name is Joe I have been a builder for 24 years. I like to be clean and prompt. I enjoy my job, meeting new people and helping them with their homes or projects.
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Cornerstone Structures
No reviews yet
Extension Builder in St Ives, Cornwall

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MAG CARPENTRY AND CONSTRUCTION
No reviews yet
Extension Builder in St Ives, Cornwall
We build to an exceptionally high standard, delivering quality craftsmanship across all aspects of building works. We are a friendly, approachable team while remaining highly professional, flexible, and committed to maintaining the same high standard of work on everything from the smallest jobs to full new-build projects.
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What types of services are offered by local extension builders in St Ives, 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 St Ives, 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 St Ives, Cornwall who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in St Ives, Cornwall?

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

Find extension builders in St Ives, Cornwall with MyBuilder

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

Step 2: Compare different extension builders in St Ives, Cornwall

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

Step 3: Hire St Ives, Cornwall extension builders with confidence

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

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

What to ask a St Ives, Cornwall extension builder before hiring?

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

An extension builder in St Ives, 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 St Ives, 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 St Ives, 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 St Ives, 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 St Ives, 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 St Ives, Cornwall

Can an extension builder in St Ives, Cornwall help with planning permission?

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

Many St Ives, 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 St Ives, Cornwall help with materials and finishes?

Yes, most extension builders in St Ives, 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.