(1)
A building classified as Group A, Division 3 is permitted to be of combustible construction or noncombustible construction used singly or in combination, provided
(a)
it is not more than 1 storey in building height, and
(b)
it has a building area not more than
(i)
1 000 m
(ii)
1 250 m
(iii)
1 500 m