A planning permission with respect to which section 85 or 86 above has effect shall not be invalid by reason only that the requirements of section 85(2) or 86(3), 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 85(3) or 86(4), 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.
In sections 83 to 86 of this Act—
" industrial building " has the meaning given to it by section 21 of the Local Employment Act 1960, as amended by section 25 of the Industrial Development Act 1966;
" office development permit ", " office premises " and " office floor space " have the same meanings as they have for the purposes of the Act of 1965 ;
" the prescribed exemption limit ", in relation to a planning permission, has the meaning given to it by section 7(5) of the Act of 1965 in relation to planning permission granted as mentioned in subsection (1)(b) of that section (restrictions on office development to be attached to planning permission not requiring office development permit); and
" wholly residential " in relation to a building, means for use exclusively as a dwelling-house or comprising only units of accommodation for such use.