Will I need planning permission for a dormer loft conversion style?
In most cases, converting a loft with the dormer style or adding a dormer window is permitted and doesn’t require planning permission. However, you have to apply for planning permission if:
- The home is on a designated land. Examples include world heritage sites, areas of outstanding beauty, national parks and conservation areas. A roof extension does not fall into the category of permitted development if the property is situated within these areas.
- The materials to be used in the construction of the loft conversion are not in keeping with the appearance of the house.
- The dormer loft conversion includes a balcony, veranda or raised platform.
- The dormer extension will face the street or the height will exceed the existing roof.
- The loft conversion includes a veranda or side window overlooking your neighbour’s property.
- If bats which are a protected species are using the building.
- The volume of the converted space is above 50m3 for detached and semi-detached homes and 40m3 for terraced houses.