Builders in Penzance & West Cornwall
Kestevyn is a local building contractor based near Penzance, taking on house extensions, renovations and alterations across Cornwall.
Because we also do polished concrete and landscaping, we can take a project from groundworks right through to the floor finish and the garden — one team, one point of contact.
What we do
House extensions
Single-storey and two-storey extensions, garden rooms and porches, built to plan with tidy sites and clear timelines.
Renovations & alterations
Full home renovations, knocking through, structural openings and reconfiguring layouts to suit how you live.
Groundworks & structural
Foundations, slabs, drainage and structural work done properly from the ground up.
Kitchens, bathrooms & interiors
Fitting out the finished space — kitchens, bathrooms and interior finishes, including microcement and concrete worktops.
Frequently asked questions
- Which areas do your builders cover?
- We're based near Penzance and work across West Cornwall, including St Ives, Hayle, Helston, Camborne, Redruth, Falmouth and Truro.
- Do you provide free quotes?
- Yes. We come out, look at the job and give you a clear, itemised written quote at no cost.
- Are you insured?
- Yes, Kestevyn is fully insured for the work we carry out.
Areas we cover
Building & Renovation across West Cornwall, including:
- Penzance
- Newlyn
- St Ives
- Hayle
- Helston
- Camborne
- Redruth
- Falmouth
- Truro
- St Just
- Marazion
- Mousehole