(1) An attachment to a building that is in the nature of a balcony or awning, bridge, gangway, hoarding or trade sign, sky sign, mast, flagpole, tower, aerial or antenna, lantern, cathead, crane, chimney, flue or duct, or an installation for cleaning and maintenance must—
have all metal parts of corrosion resistant metal, or other metal suitably protected; and
not overhang any street boundary at a height less than 2.5 m above the footpath, or 4 m above the roadway; and
be provided with drainage to prevent rainwater or condensate falling onto or running across the footpath, unless either it is a retractable awning in the nature of a sun blind, or unless the total catchment area for run-off is less than 1.5 m2.
(2) A balcony or awning that overhangs a street boundary—
must not extend closer than 450 mm to the kerb of the roadway; and
must be constructed of non-combustible or fire-retardant materials throughout, except that timber battens may be used to support the soffit lining.