Accessory Structures in Tucson, AZ (2026)
2 verified accessory structures rules for Tucson, Arizona, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Tucson's UDC allows up to two accessory dwelling units per single-family parcel, one on a duplex lot, without counting them against density limits or requiring extra parking. Each ADU is capped at 75% of the principal home's floor area or 1,000 square feet, whichever is smaller, though any ADU may reach 650 square feet regardless of house size.
Tucson Accessory Dwelling Unit Zoning Standards
Some RestrictionsTucson UDC Sec. 6.6.3.B
An accessory dwelling unit may be used as living quarters... Two accessory dwelling units are permitted per parcel developed with a Family Dwelling as defined in Section 11.3.7.A., with the exception of a Multifamily Development. A parcel developed with a duplex is permitted one accessory dwelling unit... 1. Accessory dwelling units are not subject to maximum residential density standards per S...
Shed & Carport Rules
Tucson exempts only tiny sheds, five feet tall and ten square feet or less, from zoning review; anything bigger is an accessory building under UDC Sec. 6.6.2 and must meet the principal use's setbacks, plus a 12-foot height cap under Sec. 6.6.3.D unless it's attached to the house.
Tucson Shed and Accessory Building Rules
Some RestrictionsTucson UDC Sec. 6.6.2.A.1, 6.6.2.C, 6.6.3.D
A. The standards of this Section 6.6.2 apply in all zones to buildings used for accessory uses, except as noted in the following: 1. A structure if five feet or less in height and ten square feet or less in area, such as a doghouse, a refuse container enclosure, or play equipment... C. An accessory building shall be developed in accordance with the dimensional standards of the principal land us...
Looking for Pima County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Tucson city rules.
Accessory Structures in Pima County →