The Town and Country Planning (General Permitted Development) Order 1995

H.1    Development not permitted

Development is not permitted by Class H if—

(a) the size of the antenna (excluding any projecting feed element, reinforcing rim, mountings and brackets) when measured in any dimension would exceed—

(i) 45 centimetres in the case of an antenna to be installed on a chimney;

(ii) 90 centimetres in the case of an antenna to be installed on or within the curtilage of a dwellinghouse on article 1(4) land other than on a chimney;

(iii) 70 centimetres in any other case;

(b) the highest part of an antenna to be installed on a roof or a chimney would, when installed, exceed in height—

(i) in the case of an antenna to be installed on a roof, the highest part of the roof;

(ii) in the case of an antenna to be installed on a chimney, the highest part of the chimney;

(c) there is any other satellite antenna on the dwellinghouse or within its curtilage;

(d) in the case of article 1(5) land, it would consist of the installation of an antenna—

(i) on a chimney;

(ii) on a building which exceeds 15 metres in height;

(iii) on a wall or roof slope which fronts a waterway in the Broads or a highway elsewhere.