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-family 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-A Residential Districts, except that such yards, when of less depth or width than is required for R-A Residential Districts, shall not be further reduced in depth or width and provided that the minimum floor area and lot area requirements are fulfilled.
(Ord. 29-69. Passed 4-29-69.)