Wherever the side of any lot of record in a residential district abuts on a business, commercial or manufacturing district or whenever any lot of record in a residential district is located directly across the street from a business, commercial or manufacturing district, a transitional use may be allowed. Transitional uses shall include businesses and professional offices as provided for Section 3.5 (B-PO District) of this ordinance with the following limitations:

A.

Buildings shall be compatible to surrounding residential area and approval of Director of Inspections and Zoning is required.

B.

The yard requirements of the district in which the building is located must [be] maintained.

C.

Off-street parking shall be provided as required under Section 3.13 of this ordinance.

If a lot in a residential district is so small or narrow or shallow that it is not feasible or practicable to meet the yard or lot size requirements of the zoning district in which it is located, then the [code] inspector in his discretion may permit a single-family dwelling and its accessory buildings to be erected on any such lot of record or parcel of land which became legally established and defined by deed or act of sale before the passage of this ordinance.