202.Section 81 defines landlord, occupancy arrangement and relevant house so that the provisions in this Part relate to houses which are the subject of formal tenancies and the full range of formal and informal occupancy arrangements including shared accommodation. However, as indicated in the introductory paragraph it excludes houses which are owned by a local authority, a registered social landlord or Scottish Homes; which are in specified categories regulated by the Scottish Commission for the Regulation of Care under the Regulation of Care (Scotland) Act 2001; which are used by a religious order; or which are the subject of a local authority control order in terms of section 178 of the Housing (Scotland) Act 1987. It also sets out what is meant by engaging in antisocial behaviour for the purposes of this Part of the Act.