Roof lights only — often the simplest planning route.
Velux loft conversion in Jersey — planning and bye-law guide.
A Velux loft conversion uses roof lights set flush into the existing roof slope rather than adding a dormer. It may fall within permitted development in Jersey, avoiding the need for a full planning application. We confirm your planning position and handle bye-law drawings.
- 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 permitted development check
- Planning application if required
- Structural engineering (floor and staircase)
- Bylaw Plus drawings
- Bye-law application
How It Works
PD check
We confirm whether your proposed Velux conversion falls within permitted development or requires a planning application.
Application if needed
We submit a planning application if required.
Bylaw Plus
Full construction drawings for floor, staircase, Velux positions, and insulation.
Planning Note
The Jersey test for rooflights is not the English one about projecting above the roof or facing a road. It turns on how close the rooflight is to your neighbour, how high it sits above the floor inside, and how much of the roof is already glazed. Building bye-law permission is needed whatever the answer. Head height is the other limit: some rooflight-only lofts are less usable than a dormer would be, which we check before you commit.
You will not need planning permission if all of these apply:
- The property is not listed, and the work is within its domestic curtilage
- Any rooflight within 10 metres of a neighbouring boundary has the bottom of its frame at least 1.7 metres above the finished floor inside
- Dormers and rooflights together take up no more than half the roof
- Your permitted development rights were not removed by a condition on an earlier permission
Further reading
Frequently Asked Questions
Guides that go deeper
Loft Conversions we have taken through planning
Velux Roof Lights
“Installing four roof lights into a sloping roof needed planning approval due to local conservation guidelines. The team handled the submission and gained approval within six weeks.”
Loft Conversion with Dormers
“Getting dormer windows approved in a strict area was never going to be simple. These guys knew the exact guidelines to reference in our application, which saved us months of going back and forth with the department.”
Roof Line Alteration
“Raising the roof ridge height to fit another bedroom seemed like a long shot. The 3D drawings provided to the planning committee showed it would not impact the street scene, and it worked.”
Ready to start your velux loft conversion project?
Free initial consultation. We advise on planning, costs, and timescales. Jersey only.