After regulation 55
insert
(1) Regulation 4(1)(c), as in force immediately before the commencement, continues to apply to plumbing and drainage work (including the design of the work) that was started before the commencement.
(2) Despite subregulation (1), the building practitioner and the owner of the building or land on which the plumbing and drainage work is being carried out may agree to have the work carried out in accordance with regulation 4(1)(c), as in force after the commencement, if:
(a) a building permit is not granted before the commencement; and
(b) a building certifier has not certified in writing that substantial progress was made on the design before the commencement.
(3) In this regulation:
"commencement "means the commencement of regulation 4 of the Building Amendment (Wastewater Management Systems) Regulations 2021 .
"plumbing and drainage work", see regulation 4A(2).
Note for regulation 56
Section 51 of the Act applies if a building permit was granted before the commencement or a building certifier has certified that substantial progress was made on the design before the commencement.