# The Building (Scotland) Regulations 2004, Paragraph 23A


A detached single-storey building used for shelter or sleeping in connection with recreation. Except- A dwelling. A building having an area exceeding 30 square metres. A building ancillary to another building. A building within 6 metres of a boundary or of another building. Any wastewater disposal system serving a building of this type. A building containing a gallery or galleries unless the gallery, or where there is more than one gallery, the galleries together, occupy an area not more than—
(a) 8 square metres; or
(b) one-half of the area of the room or space in which the gallery is, or galleries are, situated,
whichever is the lesser.
Interpretation of paragraph 23A
In paragraph 23A, “gallery” means a raised floor or platform which is open to the room or space into which it projects and is not enclosed below.

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Source: https://www.legislation.gov.uk/ssi/2004/406/schedule/3/paragraph/23A (the official version)
Page: https://openlegislation.uk/building-scotland-regulations-2004/schedule-3/paragraph-23A
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.