Like-for-like re-roofing
Please treat this page as general guidance, not legal advice. Rules change, and your local council has the final say on any individual house.
In England, replacing a roof covering with materials that look much the same, on the same shape and at the same height, is generally treated as repair or maintenance and does not usually need planning permission. Swapping worn concrete tiles for similar concrete tiles, or relaying slate with slate, falls into that category for most ordinary houses.
When planning can come into it
Planning is about how a building looks and how it affects neighbours. You may need permission, or at least need to check, if you are:
- Raising the ridge or changing the shape of the roof
- Adding a dormer, especially at the front of the house
- Changing to a noticeably different material or colour
- Living in a conservation area, where rules are often tighter
- Living in a listed building, where listed building consent is likely needed for almost any change
Building regulations are a separate question
Building regulations deal with safety and performance rather than looks. When a significant part of a roof is renovated, the regulations can expect insulation to be improved where it is reasonable to do so. Changing to a heavier covering, such as concrete tiles in place of slate, may also mean checking that the existing rafters can carry the extra weight.
Roof windows and dormers alter the structure, so they generally fall under building regulations even where planning is not needed. Most ordinary repairs, such as replacing slipped tiles or relaying a small area, do not.
Flat roof replacements and insulation
Flat roofs over heated rooms are where people are most often caught out. Replacing the whole covering on an extension can trigger a requirement to bring insulation up to a modern standard, which affects the build-up of the new roof and the height of its edges. A detached garage that is not heated is usually treated differently. We explain the knock-on effect on price in the flat roof replacement cost guide, and the systems themselves on our flat roofing page.
Who to check with
Your district or borough council's planning department can tell you whether planning permission or listed building consent is needed. Its building control team, or an approved inspector, deals with building regulations. Many councils offer guidance on their websites, and some will give a view on whether permission is likely before you apply. Do check before work starts, because putting things right afterwards is far harder.
How Lee helps on the quote
When Lee Draper visits to price a re-roof, he will tell you if anything you are asking for sounds like it might need planning or building control involvement, so you can check before booking. A like-for-like new roof or re-roof is usually simple. If you are thinking about a dormer, roof windows or a change of covering, raise it at the visit and it will be reflected in the written quote.
Thinking about the bigger picture? The guide to choosing a roofer covers what a good quote should include. Call 07947 758052 or book online.
Party walls and neighbours
Roof work on a terraced or semi-detached house often involves the shared wall between you and next door, particularly where the roof meets theirs along the party line. In some situations the Party Wall Act may apply, so it is worth reading the government's general guidance or speaking to a surveyor if you are planning significant changes. For a straight re-roof, simply telling your neighbours in advance, explaining where the scaffold will go and roughly how long the work will take, usually keeps everyone on good terms.
If scaffold needs to stand on the pavement or a neighbour's land, permission or a licence may be needed. The scaffold firm can normally advise on what applies, and Lee will flag this on the visit. Sorting these details early means the start date is far less likely to slip.