Quick contact info

Contact us today for your no obligation free advice and quotation.

Monday-Friday: 9am to 5pm; The Builder, Cornerstone House, Park Ave, Saint Ives TR26 2DN 07767 457790 jason@thebuilderinstives.co.uk
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The Builder

Full service building & construction company

Need a reliable building company in West Cornwall? The Builder in St Ives can help with extensions, conversions, and all types of refurbishments.

Our Services

Residential & Commercial

High-end renovation work, to transform your property.

Barn, Loft or Garage

Convert your space into a beautiful home or additional room.

single & double storey

We can help you plan, design and build your dream home extension.

The Builder in St Ives has over 30 years experience in the Residential and Commercial building industry. We provide a full range of building services, from jobs like kitchen & bathroom refits, to building two-storey extensions. We can also undertake house, cottage, and shop refurbishments, plus loft and barn conversions. Our excellent reputation for the high quality of our work, covers St Ives and the surrounding West Cornwall areas, including of Carbis Bay, Hayle and Penzance. No job is too big or too small, so call now to discuss your project.

Call us now to discuss your project

07767 457790

The Builder

Project Management

We offer free initial consultation and written budget proposal, together with honest advice about your requirements and potential costs. The Builder can also work in partnership with your architect or interior designer if required.



Thank you for all your efforts on Lahaina, we simply could not have done it without you. We look forward to working with you for many years to come.


Jason and his team converted our garage in to a bedroom with en-suite in St Ives and did a beautiful job would definitely recommend.


Jason did a great job on our attic conversion. He took on the job where others declined. We were given lots of good advice all the way through. I wouldn't hesitate in recommending him


Excellent work! Jason and his team did a brilliant job renovating our house. I wouldn't hesitate to recommend them, high quality workmanship at a competitive price.

M Dinham

Jason Watson built a new balcony plus fitting new sliding doors and window to my property in St Ives. Job was challenging as property is top (3rd) floor on busy harbour front, so working at high level with large scaffold and many people on street below. Jason did an excellent job and I would have no hesitation in using him again.