http://www.legislation.gov.uk/ukpga/1984/55/section/121Building Act 1984 An Act to consolidate certain enactments concerning building and buildings and related matters.1984-10-31texttext/xmlenStatute Law Database2026-03-06Expert Participation2026-01-27 Part IVGeneral Interpretation Meaning of “building”.1211The word “building”, for the purposes of—aPart I of this Act, andbany other enactment (whether or not contained in this Act) that relates to building regulations, or that mentions “buildings” or “a building” in a context from which it appears that those expressions are there intended to have the same meaning as in Part I of this Act,means any permanent or temporary building, and, unless the context otherwise requires, it includes any other structure or erection of whatever kind or nature (whether permanent or temporary).2In subsection (1) above, “structure or erection” includes a vehicle, vessel, hovercraft, aircraft or other movable object of any kind in such circumstances as may be prescribed (being circumstances that in the opinion of the appropriate national authority justify treating it for those purposes as a building).3For the purposes mentioned in subsection (1) above, unless the context otherwise requires—aa reference to a building includes a reference to part of a building andba reference to the provision of services, fittings and equipment in or in connection with buildings, or to services, fittings and equipment so provided, includes a reference to the affixing of things to buildings or, as the case may be, to things so affixed.4Nothing in this section applies in relation to section 120D or 120I.S. 121(4) inserted (28.6.2022 for E., 9.12.2022 for W.) by Building Safety Act 2022 (c. 30), s. 170(4)(b)(c), Sch. 5 para. 78(3); S.I. 2022/561, reg. 3(f), Sch. para. 42; S.I. 2022/1287, reg. 2(c)(iii)Words in s. 121(2) substituted (28.6.2022 for E., 9.12.2022 for W.) by Building Safety Act 2022 (c. 30), s. 170(4)(b)(c), Sch. 5 para. 78(2); S.I. 2022/561, reg. 3(f), Sch. para. 42; S.I. 2022/1287, reg. 2(c)(iii)