Bill > HB2375

This bill mandates that by January 1, 2026, Arizona municipalities with a population of 75,000 or more must allow "middle housing"—defined as duplexes, triplexes, fourplexes, and townhomes—as a permitted use in certain areas, specifically on all lots zoned for single-family homes within one mile of the municipality's central business district (the main commercial area) and on at least 20% of any new development exceeding ten contiguous acres. The bill also prohibits municipalities from making it impractical to permit, site, or build middle housing, restricting its height to less than two floors, limiting its floor area ratio (the ratio of building square footage to lot square footage) to less than 50%, or imposing more restrictive rules on middle housing than on single-family homes in the same zone, and it prohibits owner-occupancy requirements or the application of commercial building codes or fire sprinklers to these structures, while only allowing one off-street parking space per unit. Importantly, this bill carves out exceptions for areas designated as historic districts, either by state law, the municipality, or on the national register of historic places, meaning these historic areas are not subject to the new middle housing requirements. If a municipality fails to adopt these regulations by the deadline, middle housing will be allowed on all single-family zoned lots without any limitations.

Government Affairs

https://apps.azleg.gov/BillStatus/BillOverview/84144