Class G – hard surfaces for office buildings
Permitted development
G. Development consisting of—
(a)the provision of a hard surface within the curtilage of an office building to be used for the purpose of the office concerned; or
(b)the replacement in whole or in part of such a surface.
Development not permitted
G.1 Development is not permitted by Class G if—
(a)the cumulative area of ground covered by a hard surface within the curtilage (excluding hard surfaces already existing on 6th April 2010) would exceed 50 square metres; or
(b)the development would be within the curtilage of a listed building.
Conditions
G.2 Development is permitted by Class G subject to the following conditions—
(a)where there is a risk of groundwater contamination, the hard surface is not made of porous materials; and
(b)in all other cases, either—
(i)the hard surface is made of porous materials, or
(ii)provision is made to direct run-off water from the hard surface to a permeable or porous area or surface within the curtilage of the office building.