Tucson, AZ Parking Rules: Driveway Rules (2026)

I of the Unified Development Code, part of the Motor Vehicle Use Area Design Criteria, sets the paving standard for every parking lot, driveway, aisle, and other vehicular use area citywide. Four materials qualify: pervious or impervious asphaltic concrete, pervious or impervious cement concrete, a penetration treatment of bituminous material with a seal coat of bituminous binder and mineral aggregate, or an alternative surfacing method the City Engineer determines appropriate on a case-by-case basis. The rule carries one narrow carve-out: vehicular use areas for residential development with four or fewer parking spaces, along with areas used solely for vehicle storage, are exempt from the surfacing requirement entirely, so a single-family driveway serving up to four spaces can remain gravel, decomposed granite, or bare dirt.

Anything larger, a fifth space, a multifamily lot, or a commercial parking area, must use one of the approved paving materials. 2 requires it to be maintained in a smooth, durable, well-drained condition and kept clear of debris or accumulated refuse; a rutted, ponding, or trash-strewn driveway is itself a code violation independent of the paving-material question. The surfacing rule sits alongside related vehicular-use-area standards in the same section, barrier and wheel-stop requirements to keep cars off unpaved or landscaped ground, and a companion allowance in subsection K letting residential uses with four or fewer spaces back directly into a street or alley rather than provide an on-site turnaround.

6 was last amended by Ordinance 12219 on December 16, 2025, following earlier amendments in Ordinance 11070 (2013) and Ordinance 11996 (2023). Property owners planning a driveway or parking area beyond the four-space residential exemption should confirm surfacing material with Tucson's Planning and Development Services Department before pouring, since the exemption is measured by parking-space count, not lot size.