Single Storey Rear Extension

An extension built at ground floor level to the rear of an existing house, the most common type of UK extension. Under permitted development, a single-storey rear extension may extend 3 m beyond the original rear wall for an attached house or 4 m for a detached house (up to 6 m and 8 m respectively under the Neighbour Consultation Scheme). Maximum eaves height is 3 m within 2 m of a boundary; overall maximum height is 4 m.