(1)Any planning permission with respect to which section 78, 79 or 80 of this Act has effect shall not be invalid by reason only that the requirements of section 78(2), 79(2) or 80(3) of this Act, as the case may be, are not complied with; but in that case the planning permission shall be deemed to have been granted subject to the condition specified in section 78(3), 79(3) or 80(4) of this Act, as the case may be, or (if any other conditions are imposed by the authority granting the permission) to have been granted subject to the condition so specified in addition to the other conditions, and references in those sections to a condition imposed thereunder shall be construed accordingly as including references to a condition deemed to be imposed.
(2)In sections 78, 79 and 80 of this Act—
" controlled area " means an area to which these provisions apply, or, as respects any time before the commencement of this Act, Part I of the Act of 1965 applied;
" the prescribed exemption limit " means that number of square feet which, at the time when the planning permission in question is granted, is for the purposes of section 75 of this Act the prescribed exemption limit in relation to the land to which the planning permission relates, whether—
by virtue of subsection (7) of that section, or
if an order under subsection (8) of that section is for the time being in force and applies to the area, or part of an area, in which that land is situated, by virtue of that order;
" wholly residential " in relation to a building, means for use exclusively as a dwellinghouse or comprising only units of accommodation for such use.