Permitted Development Flat Roof Extension

Width of side extension must not have a width greater than half the width of the original house.

Permitted development flat roof extension.

So this means you can t add on a dormer to an extension built under permitted development. No part of the extension to be higher than the highest part of the existing roof. You can extend a detached dwelling by 8m to the rear if it s single storey or 3m if it s double. Extending under permitted development rights is entirely possible to do under the current rules.

If the extension is within 2m of a boundary maximum eaves height should be no higher than 3m to be permitted development. Side extensions to have a maximum height of four metres and width no more than half that of the original house. Verandas balconies or raised platforms are not. Only half the area of land around the original house can be covered by extensions or other buildings.

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. Gaining permitted development rights for extensions means that you can avoid having to apply for planning permission so will need slightly less paperwork and will make a slight cost saving. Semi detached and terraced homes can be extended up to 6m to the rear of the property if single. Extensions cannot be higher than the highest part of the existing roof.

Areas where there may be a planning condition article 4 direction or other restriction that limits or removes permitted development rights. A dormer is an extension usually with a window that sticks out of a sloping roof and gives you a bit more headroom. Roof extensions apart from hip to. An extension beyond the plane of the existing roof slope of the principal elevation that fronts a highway is not permitted development.

Materials to be similar in appearance to the existing house. It should also speed up the whole process a little. If altering the loft space of a flat ensure that you own the roof void and that you also have the freeholders permission. You can use it to check if your project proposal can be done within permitted development pd rights or if it will require a full planning application.

Permitted development rules for extensions. Note that external alterations on a flat would normally require planning permission. Any alteration to project no more than 150 millimetres from the existing roof plane.