Do I Need Planning Permission for Roof Work? (UK Rules)
Some roof work needs planning permission. Some needs building regulations approval. Some needs both. Some needs neither. Getting it wrong means enforcement action, difficulty selling, or ripping out finished work at your own expense. The rules depend on what you are doing, where you live and whether your property is listed or in a conservation area. This guide covers the general rules for all types of roof work in England and Wales — from simple re-tiling to adding dormers and solar panels. If you are specifically planning a loft conversion, we have a dedicated guide covering loft conversion roof considerations in more detail.
Roof Work That Usually Does Not Need Planning Permission
Most routine roof maintenance and like-for-like repairs fall under permitted development, meaning no planning application is required:
- Replacing tiles or slates with the same or similar material and colour.
- Repairing flashing, repointing ridge tiles and fixing gutters.
- Re-covering a flat roof with new felt, EPDM or GRP without changing the height or shape.
- Installing roof insulation within the existing roof space.
- Fitting up to 12 solar panels (provided they do not project more than 200mm from the roof plane and do not sit higher than the ridge).
The key principle is that if you are maintaining or repairing without altering the shape, height or appearance of the roof, you are generally fine without planning permission.
Roof Work That Does Need Planning Permission
You will almost certainly need to apply for planning permission if you want to:
- Change the roof shape, for example converting a hip roof to a gable or adding a dormer.
- Increase the roof height beyond the existing ridge line.
- Change the roofing material to something significantly different in appearance (for example, replacing slate with concrete tiles in a conservation area).
- Add a roof terrace or balcony on top of a flat roof.
- Build a loft conversion with a dormer that faces a highway (rear dormers are often permitted development, but front dormers usually need permission).
Your local planning authority website will have specific guidance for your area. When in doubt, contact them before starting work. A pre-application enquiry is usually free or low cost.
Building Regulations vs Planning Permission
These are two separate things, and many homeowners mix them up:
- Planning permission controls what you can build and how it looks from outside. It is about appearance, size and impact on neighbours.
- Building regulations control how you build it. They set technical standards for structural safety, fire resistance, insulation, ventilation and moisture control.
Most significant roof work needs building regulations approval even when it does not need planning permission. This includes:
- Re-roofing more than 25 percent of the roof area (thermal element upgrade under Part L). See our roof insulation guide for details on what this means in practice.
- Any structural alterations to the roof, including loft conversions.
- Installing new roof windows or skylights.
- Changing the roof structure to support solar panels on certain building types.
Building control will either be your local authority team or a private approved inspector. They inspect the work at key stages and issue a completion certificate when they are satisfied.
Listed Buildings and Conservation Areas
If your property is listed or in a conservation area, the rules are stricter:
- Listed buildings require Listed Building Consent for almost any work that affects the character of the building. Even a like-for-like tile replacement might need consent if it uses a different manufacturer or slightly different product. Contact your local conservation officer before doing anything.
- Conservation areas may have restrictions on materials, colours and profiles. An Article 4 direction can remove permitted development rights, meaning work that would normally be fine elsewhere requires a planning application.
- National Parks and AONBs (Areas of Outstanding Natural Beauty) often have similar additional restrictions to conservation areas.
The penalties for doing unauthorised work on a listed building are serious and can include criminal prosecution. Always check first. For budgeting purposes, see our roof replacement cost guide.
Frequently asked questions
What happens if I do roof work without planning permission?
Your local authority can issue an enforcement notice requiring you to undo the work or apply retrospectively. When you come to sell, your solicitor will need to declare any work done without the proper approvals. This can delay or derail a sale. It is always cheaper and easier to get permission first.
Do I need building regulations for a simple re-roof?
If you are replacing more than 25 percent of the roof covering, building regulations require you to upgrade the thermal performance to current standards where reasonably practical. This usually means adding insulation. Your roofer or a building control officer can advise on what is required for your specific project.
Can my neighbour object to my roof work?
If the work requires planning permission, neighbours can submit comments during the consultation period. For permitted development work, they have no formal right to object, though they can still complain to the council if they believe the work exceeds permitted development limits.
How do I check if my house is in a conservation area?
Your local authority website should have an interactive map showing conservation areas. You can also call the planning department and ask. If you are buying a property, this information comes through in the local authority search as part of the conveyancing process.