Permitted Development Flat Roof Extension

Areas where there may be a planning condition article 4 direction or other restriction that limits or removes permitted development rights.

Permitted development flat roof extension. Only half the area of land around the original house can be covered by extensions or other buildings. So this means you can t add on a dormer to an extension built under permitted development. A dormer is an extension usually with a window that sticks out of a sloping roof and gives you a bit more headroom. Extensions cannot be higher than the highest part of the existing roof.

If altering the loft space of a flat ensure that you own the roof void and that you also have the freeholders permission. If the extension is within 2m of a boundary maximum eaves height should be no higher than 3m to be permitted development. 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.

Extending under permitted development rights is entirely possible to do under the current rules. Verandas balconies or raised platforms are not. Semi detached and terraced homes can be extended up to 6m to the rear of the property if single. Permitted development rules for extensions.

Any alteration to project no more than 150 millimetres from the existing roof plane. Before you arrange to alter or add to your roof you should first check to see if you need to apply for planning permission. So while permitted development rights are beneficial there s a lot to consider before starting work. Roof extensions apart from hip to.

Side extensions to have a maximum height of four metres and width no more than half that of the original house. Width of side extension must not have a width greater than half the width of the original house. It should also speed up the whole process a little. No part of the extension to be higher than the highest part of the existing roof.

See below for a detailed guide to permitted development rules for single and double storey rear extensions side and roof extensions loft conversions porches and outbuildings. Note that external alterations on a flat would normally require planning permission. You can extend a detached dwelling by 8m to the rear if it s single storey or 3m if it s double.