(a) When a CBD-zoned plot abuts any residential district, an adequate landscape planting buffer shall be maintained adjacent to the R-zoned property. The depth of this buffer along interior lot lines shall be equal to at least one-half the height of the building, or 15 feet, whichever is greater. No buffer shall be required along street frontages abutting R-zoned property. Open parking otherwise in conformance with standards listed in this chapter may be permitted within the required buffer area except as required in Section 27.64.140 of the off-street parking code. No portion of the building is exempt from the buffer requirements.
(b) Required Fences or Walls. A solid fence or solid wall is required for parcels abutting residential districts as provided in Section 27.84.030.