Pitched Roof Conversions
Converting a flat roof to a pitched roof can change how a garage or extension looks and how it sheds rain. A pitched roof drains by gravity and can create some roof space, but it is structural work: it needs building regulations approval, and because it changes the shape of the building you should check with your council whether planning permission is needed. It is a common upgrade for ageing flat-roofed extensions and garages.
Why Choose Pitched Roof Conversions?
- Can suit the look of the main house better than a flat roof
- Sheds rainwater by gravity, so no standing water
- Can be finished in tiles or slate to match the house
- May create some extra storage space
- Replaces an ageing flat roof covering
Price Guide
From £3,000
Typical range, last reviewed September 2026. Scaffolding and VAT can be extra.
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What do you need?
Free and no obligation — takes about a minute.
Frequently Asked Questions
Do I need planning permission to convert a flat roof to pitched?
Possibly. Adding a pitched roof changes the height and shape of the building, so check with your local planning authority before you commit — rules are tighter in conservation areas, for listed buildings and where an Article 4 direction applies. Separately, building regulations approval is needed because the work is structural.
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