# The Building Safety Levy (England) Regulations 2025, Regulation 12: “Gross internal area”


For the purposes of the application of any provision of these Regulations, the “gross internal area” of a dwelling, purpose-built student accommodation or an area within a building is to be measured—
(a) in accordance with the Code of Measuring Practice (6th edition), and
(b) in square metres, rounded to the nearest whole number (where 0.5 or more is rounded up).

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Source: https://www.legislation.gov.uk/ukdsi/2025/9780348273779/regulation/12 (the official version)
Page: https://openlegislation.uk/draft-building-safety-levy-england-regulations-2025/regulation-12
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.