In any district in which single-family dwellings are permitted, a single-family dwelling and customary accessory buildings may be erected on any single lot of record at the effective date of adoption or amendment of these regulations, notwithstanding limitations imposed by other provisions of this chapter. This provision shall apply even though such lots fail to meet the requirements for area, width, or both, that are generally applicable in the district; provided, that yard dimensions and requirements other than those applying to area or width, or both, of the lot shall conform to the regulations for the district in which such lot is located. Variance of yard requirements shall be obtained only through action of the city council. (Ord. 172, 9-24-1996, eff. 10-31-1996)