Self-contained space for family — with its own front door.
Convert garage to annexe in Jersey.
Converting a garage to a self-contained annexe provides independent accommodation for elderly relatives, adult children, or carers. We handle the planning application, confirm Jersey's annexe policy requirements, and produce Bylaw Plus drawings for the full conversion.
- Free Initial Consultation
- All In-House — No Subcontractors
- Bylaw Plus — Builder-Ready Drawings
- Jersey Only Specialists
- Structural Engineering Included
What's Included
- Free consultation and planning route advice
- Planning drawings
- Planning application
- Structural engineering
- Drainage and utility design
- Bylaw Plus drawings
- Bye-law application
How It Works
Planning advice
We confirm the planning route for a garage annexe in Jersey, including the ancillary use requirement.
Application
We produce drawings and submit the planning application.
Bylaw Plus
Full construction drawings including kitchen, bathroom, insulation, and utility connections.
Planning Note
A garage annexe must remain ancillary to the main dwelling under Jersey planning policy — it cannot be sold or independently let without further planning permission.
Frequently Asked Questions
Guides that go deeper
- Garage Conversion in Jersey: Planning and Bye-Law GuideConverting a garage in Jersey — when planning permission is needed, the bye-law standards that apply, and the parking issue that catches people out.
- Permitted Development Rights in JerseyJersey's permitted development rules are narrower than England's. What you can build without a full planning application, and the traps that catch people out.
Garage Conversions we have taken through planning
Garage Conversion
“Turned our unused double garage into a gym and extra guest room. The whole process from the initial survey to passing through the planning portal was straightforward and completely stress free.”
Studio Above Garage
“Built a home office studio above our detached garage. The drawings kept the ridge height within local restrictions, saving us from a lengthy planning battle.”
Ready to start your garage to annexe project?
Free initial consultation. We advise on planning, costs, and timescales. Jersey only.