# The Town and Country Planning (General Permitted Development) (England) Order 2015, Paragraph BB.4: Interpretation of Class BB


For the purposes of Class BB—
“footprint”, in relation to a building or a moveable structure, means the total area of ground covered by the building or moveable structure;
“historic visitor attraction” means a listed building accessible by members of the public (whether or not for an entry fee) for the purposes of promoting their enjoyment, and advancing their knowledge, of the building;
“original condition”, in relation to land on which a moveable structure is provided, means the condition of the land before the moveable structure was provided;
“relevant period” means the period of 12 months beginning with the day on which one of the events described in paragraph BB.3(10) occurs.

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Source: https://www.legislation.gov.uk/uksi/2015/596/schedule/2/paragraph/BB.4 (the official version)
Page: https://openlegislation.uk/town-and-country-planning-general-permitted-development-england-order-2015/schedule-2/paragraph-BB.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.