Where uncertainty exists with respect of the boundaries of the various districts, as shown on the map, accompanying and made a part of this ordinance, the following rules apply:

(1)

The district boundaries are streets, alley[s] and property lines, unless otherwise shown, where the district boundaries are shown approximately to be on streets, alleys or property lines is intended [sic].

(2)

Where the district boundaries are otherwise indicated, and where the property has been, or may hereafter be divided into blocks and lots, the district boundaries shall be considered and established on block and lot lines.

(3)

In undivided property, the district boundaries shall be established by scale on the map.

(4)

In case of district boundary line dividing a property into two parts, the district boundary line shall be construed to be the property line nearest the less restricted district.