All Roll Calls
Yes: 138 • No: 21
ArizonaHB 2928Fifty-seventh Legislature - First Regular SessionHouseWALLET
accessory dwelling units; requirements
Sponsored By: Michael Carbone (Republican)
Signed by Governor
accessory dwelling unitsadministration approval (s)administrative review (s)applicability (s)cities and towns - title 9civil penalties (s)counties - title 11county planningdefinitions (s)effective date (s)expedited approval (s)limits (s)regulation (s)requirementsself-certification program (s)short-term rentals (s)state preemption (s)transaction privilege tax license suspension (s)vacation rentals (s)
Personalized for You
How does this bill affect your finances?
Personalize government policy and PRIA will tell you what this bill means for your household, plus every other piece of legislation we track. PRIA reads each provision against your financial profile to show you exactly what matters to your wallet.
Bill Overview
Analyzed Economic Effects
3 provisions identified: 0 benefits, 2 costs, 1 mixed.
More backyard home options for owners
Cities with more than 75,000 people and counties must allow at least one attached and one detached accessory dwelling unit on qualifying lots. Counties must also allow another detached unit on lots of at least one acre; cities must allow one on those lots when at least one unit is restricted for households earning up to 80% of area income. Each unit is capped at the lesser of 75% of the main home's floor area or 1,000 square feet. Cities had to adopt rules by January 1, 2025, and counties by January 1, 2026; places that miss their deadline must allow unlimited units on residentially zoned lots. Local governments cannot require extra parking, family ties between occupants, commercial building codes, or sprinklers, and they must allow separate long-term rentals of 90 days or more. Safety rules still apply; utility consent or adequate septic capacity may be required, and some tribal and airport or military areas are excluded.
Historic properties excluded from streamlined review
Land in a historic district, an area listed on the National Register of Historic Places, or an area designated historic by a local government is excluded from the law's specified administrative-review requirements. Owners there do not receive those particular statutory review provisions.
New rules for short-term rental owners
Before first offering a vacation or short-term rental, owners or their agents must notify nearby single-family homes, including homes directly and diagonally across the street. In multifamily buildings, notice to residents on the same floor is enough. Owners or agents must tell the county that they gave notice; the county may require new notice if contact information changes. A city, town, or county may require an owner to live on a rental property with an accessory dwelling unit approved on or after September 14, 2024. It cannot apply that residency rule if final approval came on or before September 13, 2024.
Sponsors & Cosponsors
Sponsor
Michael Carbone
Republican • House
Cosponsors
Alma Hernandez
Democratic • House
Lydia Hernandez
Democratic • House
Michael Way
Republican • House
Neal Carter
Republican • House
Roll Call Votes
House vote • 5/20/2025
FINAL: Passed
Yes: 48 • No: 7
House vote • 5/20/2025
CONCUR: Passed
Yes: 0 • No: 0
House vote • 5/7/2025
THIRD: Passed
Yes: 21 • No: 6
House vote • 3/26/2025
DP
Yes: 7 • No: 0
House vote • 3/10/2025
THIRD: Passed
Yes: 50 • No: 6
House vote • 2/24/2025
C&P
Yes: 7 • No: 0
House vote • 2/20/2025
DP
Yes: 5 • No: 2
Actions Timeline
Final Reading: Passed
5/20/2025HouseConcurrence: Passed
5/20/2025HouseThird Reading: Passed
5/7/2025HouseCommittee of the Whole: do pass amended
5/7/2025Houseundefined: PFC
3/31/2025Houseundefined: DP
3/26/2025HouseThird Reading: Passed
3/10/2025HouseCommittee of the Whole: do pass amended
3/5/2025HouseCommittee of the Whole: Retained on the Calendar
3/3/2025HouseCommittee of the Whole: Retained on the Calendar
2/26/2025Houseundefined: C&P
2/24/2025Houseundefined: DP
2/20/2025House
Bill Text
Chaptered Version
House Engrossed Version
Introduced Version
Senate Engrossed Version