Extension approved — now build it properly.
Bye-law drawings for house extensions in Jersey.
Once your extension has planning permission, bye-law drawings are required before your builder can start. Our Bylaw Plus extension drawings include full structural details, insulation specification, drainage, and all dimensions so your builder can price and build without needing anything else.
- Free Initial Consultation
- All In-House — No Subcontractors
- Bylaw Plus — Builder-Ready Drawings
- Jersey Only Specialists
- Structural Engineering Included
What's Included
- Bylaw Plus drawings at construction level
- Structural engineering details and calculations
- Insulation specification
- Foundation and drainage details
- Bye-law application management
How It Works
Post-planning brief
Once planning is approved, we move immediately to Bylaw Plus drawing stage.
Drawing production
Full construction drawings for the extension including structural, insulation, and drainage details.
Bye-law application
We submit and manage the application through to formal approval.
Planning Note
Bye-law approval for an extension must be obtained before any work starts, even after planning permission is granted.
Frequently Asked Questions
Guides that go deeper
- Bye-Law Drawings in Jersey: What They Are and Why They MatterThe difference between planning drawings and bye-law drawings — and why most people don't realise they need both before their builder can start.
- How Long Does Planning Permission Take in Jersey?Realistic timescales for householder, new build and listed building applications in Jersey — and the things that actually cause delay.
Ready to start your bye-law drawings for extensions project?
Free initial consultation. We advise on planning, costs, and timescales. Jersey only.