(1) Notwithstanding the amendments made by this Act, the Principal Act as in force immediately before the commencement day continues to apply in relation to—
(a) a building permit granted before the commencement day;
(b) a building permit granted after the commencement day in relation to plans that were approved, whether before or after the commencement day, on the basis of an application lodged with the Building Controller before that day; and
(c) building work in respect of which a building permit referred to in paragraph (a) or (b) has been granted.
(2) Where an application for approval of plans for building work had been lodged with the Building Controller before the commencement day—
(a) Part III of the Principal Act as in force immediately before the commencement day continues to apply in relation to it;
(b) if the plans are approved, a person who, before the commencement day, would have been entitled to apply for a building permit for the building work referred to in the plans may apply for such a permit after that day; and
(c) the Principal Act as in force immediately before the commencement day continues to apply in relation to an application referred to in paragraph (b) and to the functions of the Building Controller in relation to the grant or refusal of a building permit.
(3) In this section—