For the purposes of this Chapter any premises falling within section 3(1) are premises with a resident landlord at any time if—
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Where the freehold of any premises is held on trust, subsection (1) applies as if—
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For the purposes of this section a person is an adult member of another's family if that person is—
and in paragraph (b) any reference to a person's son or daughter includes a reference to any stepson or stepdaughter of that person, and "son-in-law" and "daughter-in-law" shall be construed accordingly.
In this section—
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"purpose-built block of flats" means a building which as constructed contained two or more flats.
"qualifying flat", in relation to a relevant person, or an adult member of a relevant person's family, means a flat the freehold of the whole of which is owned by the relevant person.