(1)  An owner of premises may apply for a plumbing permit under Part 12 in relation to completed, or partially completed, plumbing work that –

(a) fails to comply with this Act, or any other relevant Act, as in force at the time the work was performed; and

(b) is the subject of a plumbing order.

(2)  The regulations may exempt or vary any of the requirements of that Part, or prescribe requirements that are in addition to the requirements of that Part, in relation to the application of that Part to plumbing work referred to in subsection (1).