9-2-5: TRANSITION ZONING:
   A.   Lots In Two Districts: Where a district boundary line, as established in this title or as shown on the official zoning map, divides a lot which was in single ownership and of record at the time of the effective date hereof, the use thereon and the other district requirements apply to the least restricted portions of such lot under this title shall be considered as extending to the entire lot; provided, that the more restricted portion of such lot is entirely within sixty feet (60') of said dividing district boundary line. The use so extended shall be deemed to be conforming.
   B.   Lots In Residence District Adjacent To Business Or Light Manufacturing Districts: The first residentially zoned lot having a side yard adjacent to any CB or LM district may be utilized in accordance with the use requirements of the next least restricted residential zone; provided, that the area, height and other restrictions of the zone district in which it is located are met. In addition, any single adjacent structure located or built upon the first sixty feet (60') of such a residentially zoned lot with a side yard adjoining a CB or LM district may be used for offices for groups of doctors, dentists, architects, engineers or attorneys and insurance, institutional and real estate offices. In addition, such other semicommercial uses as determined by the city council to be of similar character are permitted. Such structure or use must comply with the area, height and other restrictions of the zoning district in which it is located.
   C.   Lots In Business Or Light Manufacturing Districts Adjacent To Residential Districts: Where a lot in a business or light manufacturing district abuts a lot in a residential district, there shall be provided along such abutting lines a yard equal in width or depth to that required in the residential district.
   D.   Mixed Residential And Business Or Light Manufacturing Frontage: Where the frontage on one side of a street between two (2) intersecting streets is zoned partly as residential and partly as business or light manufacturing, the front yard depth in the business or industrial district shall be equal to the residential front depths of the residential district. (Ord. 341, 9-10-1996)