Garden Annex Builders & Installers UK
Garden annexes (sometimes called granny annexes) include a kitchenette, bathroom and sleeping area for self-contained living. They typically need planning permission and full building regulations sign-off.
Typical size
20–40m²
Price range
£45,000–£95,000
Lead time
4–10 weeks
Garden Annex specialists
Ark Design Build
Bespoke garden rooms tailored to enhance your outdoor living.
Baltic Bespoke
Custom-designed garden rooms and luxury outdoor living spaces in North West England.
BDR Bespoke Gardens & Offices Ltd
Custom garden rooms and full outdoor space design services in Surrey.
Bespoke Garden Rooms
Bespoke Garden Rooms offers quality garden buildings tailored to your needs.
Blyss Garden Rooms
Bespoke garden rooms in North West London.
Cambridge Garden Studios
Bespoke garden studios designed and built with over 30 years of experience.
Cedar Garden Rooms
Cedar Garden Rooms creates bespoke, high-quality garden rooms and offices.
Composite Garden Rooms
UK's leading garden building specialists creating beautiful garden rooms.
Country Garden Rooms
Handcrafted, fully insulated garden rooms tailored for your needs.
Garden Annex FAQs
Do I need planning permission for a garden annex?
Yes — annexes used as ancillary living accommodation usually require full planning permission and must comply with building regulations for habitable rooms.