It is a defence to a
charge under section 9 or 10 if —
(a) the
building or demolition work is done in the circumstances mentioned in
section 78(1)(c), 79(1)(c) or 80(1)(c); and
(b)
section 78(3), 79(2)(b) or 80(2)(b), as is applicable to the case, is complied
with; and
(c) as
soon as practicable after the work is done an application for a building
permit or demolition permit is made in respect of the work done.