(1) A footing may support a party wall.
(2) A footing may extend beyond the boundaries of a street alignment—
(a) to a distance of not more than 300 mm if the highest projecting part of the footing is at a depth of at least 450 mm but less than 3 m below the level of the street; or
(b) to a distance of not more than 1 m if the highest projecting part of the footing is at a depth of at least 3 m below the level of the street.
Division 1—Protection of adjoining property by means of protection work