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


Development is not permitted by Class A—
(a) if the cumulative gross floor space of any buildings erected, extended or altered would exceed—
(i) 25% of the gross floor space of the original school, college, university or hospital buildings; or
(ii) 100 square metres,
whichever is the lesser;
(b) if any part of the development would be within 5 metres of a boundary of the curtilage of the premises;
(c) if, as a result of the development, any land used as a playing field at any time in the 5 years before the development commenced and remaining in this use could no longer be so used;
(d) if the height of any new building erected would exceed 5 metres;
(e) if the height of the building as extended or altered would exceed—
(i) if within 10 metres of a boundary of the curtilage of the premises, 5 metres; or
(ii) in all other cases, the height of the building being extended or altered;
(f) if the development would be within the curtilage of a listed building;
(g) the development would lead to a reduction in the space available for the parking or turning of vehicles; or
(h) unless—
(i) in the case of school, college or university buildings, the predominant use of the existing buildings on the premises is for the provision of education; or
(ii) in the case of hospital buildings, the predominant use of the existing buildings on the premises is for the provision of any medical or health services.

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Source: https://www.legislation.gov.uk/uksi/1995/418/schedule/2/part/32/paragraph/A.1 (the official version)
Page: https://openlegislation.uk/town-and-country-planning-general-permitted-development-order-1995/schedule-2/part-32/paragraph-A.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.