Wherever any uncertainty the boundary of any use district as shown on the zoning map, incorporated herein, the following rules shall apply.
(A) Where district boundary lines are indicated as following streets, alleys, or similar rights-of-ways they shall be construed as following the center lines thereof.
(B) Where district boundary lines are indicated as approximately following lot lines, the lot lines shall be construed to be the boundaries.
(C) Where a lot held in 1 ownership and of record at the effective date of these standards is divided by a district boundary line, the entire lot shall be construed to be within the less restricted district; provided that this construction shall not apply if it increases the area of the less restricted portion of the lot by more than 20%.
(1992 Code, § 155.018) (Ord. passed 5- -1969)