Buffer fences between districts shall be allowed or required as follows:
(a) Other than R-S. R-1 or R-2, One-Family Residential Zoning Districts. In R-3, Multifamily Residence; R-4 Townhouse Residence; O, Office; B-1, B-2 and B- 3, Business; and I and L-I, Industrial Districts, screening shall be required on rear or side lines abutting any lot either presently in use as or zoned residential by a masonry wall or board-on-board fence six feet in height and landscaped ground cover, provided that the first thirty-foot section of such wall or fence, measured from the street right-of-way line, shall be stepped down to a height of two and one-half feet at such right-of-way line, following a pattern of appropriate design, subject to approval by the Architectural Board of Review.
(b) Gas Stations. Residential screening for gas stations along rear and/or side property abutting any lot zoned or presently in use as residential shall be provided with a masonry wall, not less than six feet in height, provided that the first thirty-foot section of such wall or fence, measured from the street right-of- way line, shall be stepped down to the height of two and one-half feet at such right-of-way line, following a pattern of appropriate design, subject to approval by the Architectural Board of Review as stated in Section 1171.07 of the Planning and Zoning Code.
(Ord. 2005-140. Passed 10-18-05.)