The conversion of any building into a dwelling, or the conversion of any dwelling so as to accommodate an increased number of dwelling units or families, shall be permitted only within a zone in which a new building for similar occupancy would be permitted under this chapter and only when the resulting occupancy will comply with the requirements governing new construction in such zone with respect to minimum lot size, floor area, dimensions of yards, and other open spaces, and off-street parking. Each version shall be subject also to such further requirements as may be specified after applying to such zone. The aforesaid requirements with respect to yards and other open spaces shall not apply if the conversion will not involve any exterior structural changes.
(Prior Code, § 9.3)