A single-family residence existing on a lot of fifty feet or more in width at the time of the enactment of this Zoning Code may be altered or enlarged for multiple occupancy, provided that existing conforming yards shall not be diminished to a depth or width less than is required by this Zoning Code for R-S Residential Districts, except that such yards, when of less depth or width than is required for R-S Residential Districts, shall not be further reduced in depth or width, but provided, however, that the minimum floor area and lot area requirements are fulfilled.
(Ord. 29-69. Passed 4-29-69.)