Sections 3 to 16 and 21 apply only to new tenancies.
Sections 17 to 20 apply to both new and other tenancies.
For the purposes of this section a tenancy is a new tenancy if it is granted on or after the date on which this Act comes into force otherwise than in pursuance of—
Subsection (3) has effect subject to section 20(1) in the case of overriding leases granted under section 19.
Without prejudice to the generality of subsection (3), that subsection applies to the grant of a tenancy where by virtue of any variation of a tenancy there is a deemed surrender and regrant as it applies to any other grant of a tenancy.
Where a tenancy granted on or after the date on which this Act comes into force is so granted in pursuance of an option granted before that date, the tenancy shall be regarded for the purposes of subsection (3) as granted in pursuance of an agreement entered into before that date (and accordingly is not a new tenancy), whether or not the option was exercised before that date.
In subsection (6) "option" includes right of first refusal.
This Act does not apply to occupation contracts within the meaning of section 7 of the Renting Homes (Wales) Act 2016 (anaw 1).