Bespoke Garden Rooms & Summerhouses
Insulated, year-round garden rooms and summerhouses designed and built from the ground up to extend your Cornish living space outdoors.
Get a Free QuoteCustom Garden Rooms Built for Cornwall
A bespoke garden room is the perfect way to add a home office, studio, gym, or relaxation space without extending your main house. At Kwilkyn Carpentry, we design and build fully insulated garden rooms and summerhouses from the timber frame up — handling everything from the structural shell to the interior fit-out.
Built to withstand the Cornish climate, our garden rooms feature properly insulated walls, floors, and roofs, double-glazed windows and doors, and weatherproof cladding. Inside, we can fit electrics, plastered walls, and even bespoke built-in furniture to make the space genuinely usable all year round.
Whether you want a compact summerhouse for the bottom of the garden or a substantial garden office with bi-fold doors, we manage the entire build from design to final decoration.
- Fully insulated, year-round usable structures
- Double-glazed windows and doors
- Electrics, plastering, and interior fit-out
- Weatherproof timber and composite cladding
Bespoke Design
Designed for your garden and intended use.
Weatherproof
Built to withstand the Cornish climate.
Fully Insulated
Usable comfortably all year round.
Full Build
From frame to final interior fit-out.
Our Simple 4-Step Process
From initial idea to final installation, we make the process smooth and stress-free.
Consultation
We assess your garden and discuss your intended use.
3D Design
We create SketchUp models of the structure and layout.
Building
We construct the insulated frame, roof, and cladding.
Fit-Out
We complete electrics, plastering, and interior finish.
Frequently Asked Questions
Ready to add a garden room to your home?
Book a design consultation today or upload photos of your garden for a free, no-obligation estimate.