Planning Permission

You do not normally need to apply for planning permission to re-roof your house or to insert roof lights or skylights as the permitted development rules allow for roof alterations subject to the following limits and conditions.

  • Any alteration to project no more than 150 millimetres from the existing roof plane.
  • No alteration to be higher than the highest part of the roof.
  • Side facing windows to be obscure-glazed; any opening to be 1.7m above the floor.

These are specific to "any other alteration to the roof of a dwellinghouse" as detailed in Schedule 2, Part 1, Class C of the The Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended).

There are different rules for "the enlargement of a dwellinghouse consisting of an addition or alteration to its roof" (Schedule 2, Part 1, Class B) which are detailed in our 'Loft Conversion' section.

Build Aviator's estimating service can help you plan your project by providing an accurate cost of the proposed changes. Find out more.

Solar panels: The permitted development regime for solar panels also has different limits on projections and in relation to protected areas. View guidance on the planning and building regulations regime for domestic solar panels.

Please note: The permitted development allowances described here apply to houses and not to: