Strata title in the context of "Apartment"

An apartment (North American English), flat (British English, Indian English, South African English) or unit (Australian English), is a self-contained housing unit that occupies part of a building. The housing tenure of apartments also varies considerably, from large-scale public housing, to owner occupancy within what is legally a condominium (strata title or commonhold) or leasehold, to tenants renting from a private landlord. The buildings that contain apartments may be called different things depending on size or country (see below).

Commonhold is a system of property ownership in England and Wales. It involves the indefinite freehold tenure of part of a multi-occupancy building (typically a flat) with shared ownership of and responsibility for common areas and services. It has features similar to the strata title system in Australia, and condominium systems in the United States. Following a consultation by the Law Commission, it was introduced by the Commonhold and Leasehold Reform Act 2002 as an alternative to leasehold, and was the first new type of legal estate to be introduced in English law since 1925.