Section 7 of the Act of 1965 (attachment to certain planning permissions of conditions restricting office floor space, where the permission can be granted without an office development permit) shall not apply to a planning permission granted after the commencement of this section for the erection of a building on any land, unless it is in an area to which Part I of that Act applied at the time when the application for the planning permission was made.
Section 7 of the Act of 1965 shall not apply to a planning permission granted after the said commencement for the erection of a building with a floor space less than twice the prescribed exemption limit; nor shall it apply to a planning permission so granted for the erection of a building (of whatever floor space) which is wholly residential.
Section 7 of the Act of 1965 shall not apply to a planning permission which is subject to conditions by virtue of section 23(5) or (6) of the Industrial Development Act 1966 (attachment to planning permission of conditions subject to which an industrial development certificate was issued by the Board of Trade) and those conditions either restrict the office floor space which the building may contain or preclude it from containing any office floor space.