# The Town and Country Planning (General Permitted Development) Order 1995, Paragraph I.1: Development not permitted


Development is not permitted by Class I if—
(a) it would result in the presence of more than one anemometry mast within the curtilage of the dwellinghouse;
(b) a stand alone wind turbine is installed within the curtilage of the dwellinghouse;
(c) an air source heat pump is installed on the dwellinghouse or within the curtilage of the dwellinghouse;
(d) the highest part of the anemometry mast (including apparatus fitted to the mast) would exceed 11.1 metres in height;
(e) any part of the anemometry mast (including apparatus fitted to the mast but excluding guy lines) would be located in a position which is less than a distance equivalent to the overall height (including apparatus fitted to the mast) of the anemometry mast plus 10 % of its height when measured from any point along the boundary of the curtilage;
(f) the anemometry mast would be installed on safeguarded land;
(g) the anemometry mast would be installed within the curtilage of a listed building;
(h) the anemometry mast would be installed on a site designated as a scheduled monument;
(i) in the case of land within a conservation area, the anemometry mast would be installed so that it is visible from a highway which bounds the curtilage of the dwellinghouse;
(j) the anemometry mast would be installed on land which is within an area of outstanding natural beauty, a World Heritage Site or a site of special scientific interest; or
(k) an anemometry mast has been installed within the curtilage of the dwellinghouse within the preceding 5 years.

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Source: https://www.legislation.gov.uk/uksi/1995/418/schedule/2/part/40n1/paragraph/I.1 (the official version)
Page: https://openlegislation.uk/town-and-country-planning-general-permitted-development-order-1995/schedule-2/part-40n1/paragraph-I.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.