Single-storey rear extension: rules, council figures and cost
Under permitted development a rear extension may project up to 4 metres on a detached house or 3 metres on any other house without planning permission, subject to the other Class A limits; larger home extensions of up to 6 or 8 metres go through the neighbour consultation scheme.[1]
Plandome's fixed fee for this service is £1,500 (VAT_WORDING_TBC). The council's own application fee is separate.