Roof Extension Planning Permission

Any alteration to project no more than 150 millimetres from the existing roof plane.

Roof extension planning permission.

This is when measured perpendicularly from the external surface of the roof. National planning guidance concentrates on general loft extensions and conversions where dormers are more commonplace. It doesn t go back further than 3 metres if it s a terraced house or 4 metres if it isn t. It s located at the back of the house.

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. It s not higher than 4 metres including. The height of the eaves where the wall meets the roof is no higher than 3 metres. If your extension will have one storey you don t need planning permission as long as.

And non opening unless the openable part is more than 1 7 metres above the floor. Any upper floor window located in a side elevation must be obscure glazed. This is a battle that continues but the general answer is that if you have a terrace house with a traditional london roof in a conservation area and all the roofs in your stretch of houses are unchanged it can sometimes be difficult to get planning permission to build a mansard home extension. It would protrude more than 15cm above the roof slope.

If your loft conversion plans include installing a roof light you must apply for householder planning permission if. A dormer roof extension can often be done without full planning permission under permitted development rights.