# The Town and Country Planning General Development Order 1988, Paragraph B.1: Development not permitted


Development is not permitted by Class B if—
(a) the external appearance of the mine would be materially affected;
(b) any building, plant or machinery structure or erection or any deposit of minerals or waste—
(i) would exceed a height of 15 metres above ground level, or
(ii) where a building, plant or machinery would be rearranged, replaced or repaired, the resulting development would exceed a height of 15 metres above ground level or the height of what was replaced, rearranged or repaired, whichever is the greater;
(c) any building erected (other than a replacement building) would have a floor space exceeding 1000 square metres;
(d) the cubic content of any replaced, extended or altered building would exceed by more than 25% the cubic content of the building replaced, extended or altered or the floor space would exceed by more than 1000 square metres, the floor space of that building;
(e) it would be for the purpose of creating a new surface access to underground workings or of improving an existing access (which is not an active access) to underground workings; or
(f) from a date 6 months after the coming into force of this order, it would be carried out on land within the definition in paragraph F.2(1)(b), and a plan of that land has not, before that date, been deposited with the mineral planning authority.

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Source: https://www.legislation.gov.uk/uksi/1988/1813/schedule/2/part/20/chapter/2/paragraph/B.1 (the official version)
Page: https://openlegislation.uk/town-and-country-planning-general-development-order-1988/schedule-2/part-20/chapter-2/paragraph-B.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.