Roof Extension Planning Permission

If your loft conversion plans include installing a roof light you must apply for householder planning permission if.

Roof extension planning permission.

Roof pitch must match existing house as far as practicable note that this also applies to any upper storey built on an existing extension. 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 doesn t go back further than 3 metres if it s a terraced house or 4 metres if it isn t. It would protrude more than 15cm above the roof slope.

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. It s not higher than 4 metres including.

A mansard roof extension can represent a much more significant change however where full planning permission will. 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. The height of the eaves where the wall meets the roof is no higher than 3 metres.

It s located at the back of the house. This is when measured perpendicularly from the external surface of the roof.