Development not permitted
M.1 Development is not permitted by Class M if—
(a)the building was not used for one of the uses referred to in Class M(a)—
(i)on 20th March 2013, or
(ii)in the case of a building which was in use before that date but was not in use on that date, when it was last in use;
(b)permission to use the building for a use falling within Class A1 (shops) or Class A2 (financial and professional services) of the Schedule to the Use Classes Order has been granted only by this Part;
(c)the cumulative floor space of the existing building changing use under Class M exceeds 150 square metres;
(d)the development (together with any previous development under Class M) would result in more than 150 square metres of floor space in the building having changed use under Class M;
(e)the development would result in the external dimensions of the building extending beyond the external dimensions of the existing building at any given point;
(f)the development consists of demolition (other than partial demolition which is reasonably necessary to convert the building to a use falling within Class C3 (dwellinghouses) of the Schedule to the Use Classes Order); or
(g)the building is—
(i)on article 2(3) land;
(ii)in a site of special scientific interest;
(iii)in a safety hazard area;
(iv)in a military explosives storage area;
(v)a listed building; or
(vi)a scheduled monument.