http://www.legislation.gov.uk/ukpga/1984/55/section/87Building 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 Building Act 1984s. 131ABuilding Safety Act 2022s. 59s. 170(4)(c)Building Act 1984s. 95(5)Building Safety Act 2022s. 60(2)s. 170(4)(c)Building Act 1984s. 131BBuilding Safety Act 2022s. 60(3)s. 170(4)(c)Building Act 1984Sch. 1 para. 7A(4)Building Safety Act 2022Sch. 5 para. 83(5)s. 170(4)(b)(c)reg. 2(n)(xxxiii)reg. 2(d)(xi)Sch.reg. 348- 12Building Act 1984s. 44(11)Sustainable and Secure Buildings Act 2004s. 3(8)s. 11(3)Building Act 1984ActThe Building etc. (Amendment) (No. 2) (Wales) Regulations 2025Rheoliadau Adeiladu etc. (Diwygio) (Rhif 2) (Cymru) 2025reg. 21reg. 1(2)Building Act 1984s. 1(1A)(d)Infrastructure Act 2015s. 37(2)s. 57(5)(a)Building Act 1984Sch. 1 para. 7AInfrastructure Act 2015s. 37(4)s. 57(5)(a) Part III871This section applies to any house, building or other premises being property belonging to Her Majesty in right of the Crown or of the Duchy of Lancaster, or belonging to the Duchy of Cornwall, or belonging to a government department, or held in trust for Her Majesty for purposes of a government department.2In relation to any such property, the appropriate authority may agree with—athe council of the county, orbthe local authority of the district,in which the property is situated that any particular provisions of this Part of this Act, and of Part IV of this Act so far as it relates to this Part, shall apply to the property; and, while the agreement is in force, those provisions shall apply to that property accordingly, subject to the terms of the agreement.2ASubsection (2) above shall apply in relation to property in Wales as if—ain paragraph (a) the reference to a county included a reference to a county borough; andbparagraph (b) were omitted.3Any such agreement may contain such consequential and incidental provisions (including, with the approval of the Treasury, provisions of a financial character) as appear to the appropriate authority to be necessary or equitable.4In this section, “the appropriate authority” means—ain the case of property belonging to Her Majesty in right of the Crown, the Crown Estate Commissioners or other government department having the management of the property,bin the case of property belonging to Her Majesty in right of the Duchy of Lancaster, the Chancellor of the Duchy,cin the case of property belonging to the Duchy of Cornwall, such person as the Duke of Cornwall, or the possessor for the time being of the Duchy of Cornwall, appoints, anddin the case of property belonging to a government department or held in trust for Her Majesty for purposes of a government department, that department,and, if a question arises as to what authority is the appropriate authority in relation to any property, that question shall be referred to the Treasury, whose decision is final.S. 87 modified (17.7.1992) by S.I. 1992/1732, art. 4(2)S. 87(2A) inserted (1.4.1996) by 1994 c. 19, s. 22(3), Sch. 9 para. 15(2) (with ss. 54(5)(7), 55(5), Sch. 17 paras. 22(1), 23(2)); S.I. 1996/396, art. 3, Sch. 1