Do I need planning permission to replace my roof?
Straightforward like-for-like roof repair or replacement will often not require a planning application, but significant changes to roof shape, height or appearance, listed-building status, conservation restrictions and individual planning conditions can change the position. Rules also differ across the UK, so the property-specific requirements should be checked.
Where permission becomes relevant
Straightforward like-for-like re-roofing is often treated as maintenance, but the position changes where the appearance alters materially, where the roof shape or height changes, or where the property is subject to additional controls.
Listed buildings, conservation areas, article 4 areas and some flats and leasehold properties all have their own requirements.
How to check properly
Your local planning authority is the authority on your property, and a short enquiry before work starts is much cheaper than resolving a problem afterwards.
Planning permission and Building Regulations are separate matters; needing one does not tell you anything about the other.