Tucson, AZ Building Setbacks & Zoning: Setback Rules (2026)

3-7. A sets the side and rear perimeter yard at 5 feet where the adjoining parcel is residentially zoned, and 10 feet or three-quarters of the wall's height, whichever is greater, where a nonresidential use abuts the lot. Street perimeter yards run separately under Sec. C: for single-family, duplex, and middle housing development, the minimum required front street perimeter yard is 20 feet measured from the street property line. Where a lot abuts more than one street, the owner chooses which street lot line is the front lot line, and the street perimeter yard along any other street is only ten feet.

A sets the residential-adjacent perimeter yard at 25 feet in the RH and SR zones and 20 feet in the SH, RX-1, and RX-2 zones. Where a wall isn't parallel to the lot line, Sec. 5 allows averaging the yard width, provided it's never narrower than half the required width nor narrower than three feet at any point. Nonresidential and multifamily development abutting an Arterial or Collector Street needs a ten-foot street yard measured to the future right-of-way line under the Major Streets and Routes Plan, or 20 feet abutting a Local Street.