A. The front yard requirements for the various districts shall determine the minimum and maximum building setback from the front property lines.
B. In each block in the R-A, R-E, R-S, R-1, R-1-D, R-2 and R-3 residential districts, where fifty percent (50%) or more of the frontage on a side of a given street is already built up, the average distance from the main building front to the property line of existing buildings shall be determined to be the setback line, provided, however, that in no case shall this distance be less than fifteen feet (15').
C. In no case shall main buildings in a residential district be set back further than forty feet (40') from any front property line, unless provision is made for a future street or street widening, alleys, or alley widening; in which case, the distance shall be not more than forty feet (40') from the future property line as determined by the commission. Deed restrictions existing on the effective date, if requiring a greater setback than forty feet (40'), shall take precedence over this section. This maximum forty foot (40') building setback line is waived for properties located in zones A-1, A-2, R-A and R-E.
D. On key lots, the minimum front yard shall be the average of the front yard for the adjoining interior lot and the side yard required for the reversed corner lot. When buildings on the adjoining interior lot may be closer to the property line than the distance prescribed for such front yard by this title, the location of the existing building shall determine the front yard on such interior lot, but in no case may the key lot front yard be less than fifteen feet (15').
E. On corner lots, in residential districts, side yards abutting the street shall be not less than the required front yard for lots in the district in which the lot is located, and in no case, not less than fifteen feet (15'). Private garages located in the side yard on the side street shall be located at least twenty feet (20') from the property line on the side street.
F. On a reversed corner lot, the side yard abutting the side street shall be not less than the distance required for a front yard on the interior lots on the side street, provided, however, that the yard shall be not less than fifteen feet (15'). Private garages located in the side yard within fifty feet (50') of the key lot shall be set back the same distance from the side lot line of the reversed corner lot as the front yard for the key lot to its rear.
G. Where property has a slope of more than ten percent (10%), the maximum front yard requirement of this title is waived. (Ord. 1000 § 37.00, 1955)