pt 1 comm on date of notification

pt 2, sch 1 comm 1 October 2025 (see s 2(1))

pt 3 divs 1–2 comm 1 January 2026 (see s 2(2))

pt 3 div 3 comm 1 April 2026 (see s 2(3))

exp 1 September 2036 (see SIA s 54)