A structure may be constructed on any lot lawfully established prior to adoption of this chapter if said lot is less than the minimum area required for building lots in the district in which it is located, provided that the following conditions exist or are met:
A.
Availability of adjacent vacant land. No structure shall be erected on any nonconforming lot if the owner of said lot owns any adjoining vacant land which would create a conforming lot if said vacant land were combined with the deficient lot.
B.
Side yards. The width of a side yard and total side yards, when required, may be reduced in the same proportion as the actual lot width ratio is to the required lot width; provided, however, that no structure shall be constructed on a nonconforming lot unless it shall have a minimum side yard of five feet and total of 15 feet.
C.
Front and rear yards. No structure shall be constructed on a nonconforming lot unless it shall have front and rear yards conforming to the minimums required for the district in which said lot is located, except as said lot may meet the conditions set forth below in § 360-16C of this chapter.
D.
Lot width. The minimum lot width of any lot shall be measured along the minimum building setback line, as required for the district in which it is located.
E.
Corner lots. At all street intersections, no obstruction to vision, other than an existing building, post, column, tree or hedges, exceeding 30 inches in height above the established grade of the street at the property line shall be erected or maintained on any lot within the triangle formed by the street lot lines of such lot and a line drawn between the points along such street lot lines 30 feet distant from their points of intersection.
F.
Through lots. In the case of a lot running through from one street to another, the front of such lot shall, for the purposes of this chapter, be considered that frontage upon which the majority of the buildings in the same block front, but in case there has been no clearly defined frontage established, the owner may, when applying for a building permit, specify on the permit application which lot line shall be considered the front line. The rear portion of such a lot shall, however, be treated as a lot front for the purposes of determining required setbacks and locations of permitted structures and uses so as not to detract from the aesthetic quality of the second street frontage.
G.
Reduction of required area or space. The area or dimension of any lot, yard, parking area or other space shall not be reduced to less than the minimum required by this chapter, except as provided in this chapter, and if already less than the minimum required by this chapter, said area or dimension may be continued but shall not be further reduced.