# The Higher-Risk Buildings (Key Building Information etc.) (England) Regulations 2023, Regulation 4: Key building information: use


(1) The principal use of—
(a) the higher-risk building,
(b) any ancillary building,
(c) any outbuilding,
(d) any storey below ground level in the higher-risk building.
(2) “Outbuilding” in relation to a higher-risk building means any permanent or temporary building, whether or not attached to the higher-risk building but not forming part of it, that is used for purposes incidental to the enjoyment of the higher-risk building.

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Source: https://www.legislation.gov.uk/ukdsi/2023/9780348243963/regulation/4 (the official version)
Page: https://openlegislation.uk/draft-higher-risk-buildings-key-building-information-etc-england-regulations-2023/regulation-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.