Create More Space Without Moving Home
A house extension is one of the most effective ways to increase your living space while enhancing the comfort, functionality, and value of your property. Whether you need a larger kitchen, an open-plan living area, an additional bedroom, or a dedicated home office, a well-designed extension allows you to adapt your home to suit your changing lifestyle.
At Warvena Construction, we design and build high-quality house extensions across Cornwall, delivering tailored solutions that blend seamlessly with your existing property. From the initial consultation through to the final finish, we focus on craftsmanship, practicality, and attention to detail.
What We Build
- Single-storey house extensions
- Double-storey extensions
- Rear extensions
- Side return extensions
- Wraparound extensions
- Kitchen extensions
- Dining room extensions
- Living room extensions
- Bedroom extensions
- Home office extensions
- Utility room extensions
- Structural alterations
- Steel beam installation
- (RSJs) Roofing and external finishes
- Electrical and plumbing installations
- Internal plastering and decorating preparation
- Flooring and joinery
- Full project management
Why Warvena
- Every extension built to the same standard as a bespoke new build
- Proper drawings and resolved specifications before work starts
- Built around you living in the home — clean, low-disruption sites
- AONB, conservation area, and listed property planning experience
- TrustMark registered · Passivhaus Trust listed · AECB members
House Extensions Near You in Cornwall
We work across the county — Truro, Falmouth, Redruth, St Ives, Newquay, St Austell, and throughout Cornwall.
FAQs
How much does a house extension cost in Cornwall?
Cost depends on size, specification, and ground conditions. We price each extension against a resolved design, so the figure reflects your actual project. Happy to discuss realistic budgets early.
Do I need planning permission?
Some extensions are permitted development; many aren't — especially in AONB zones, conservation areas, and listed properties. We advise on your specific property early.
Can I live in my home during the build?
In most cases, yes. We plan around you — dust protection, usable kitchens and bathrooms, clean sites throughout.
How long does an extension take?
Single-storey: typically three to five months. Two-storey and wrap-around take longer. Design and planning happen first.
Can you extend a listed or period property?
Yes. It needs matching materials, sympathetic design, and listed building consent alongside planning. We have the experience.
THINKING ABOUT HOUSE EXTENSIONS IN CORNWALL?
Warvena Construction are TrustMark registered builders based in Redruth, Cornwall. Listed on the Passivhaus Trust directory and members of the AECB, we build certified Passive House homes across Cornwall for private clients, architects, and developers.