HB 2110 Arizona House · 57th Legislature - First Regular Session

development; adaptive reuse; rezoning; prohibition

HB 2110 requires Arizona cities with over 150,000 residents to allow converting up to 10% of existing commercial, office, or mixed-use buildings to multifamily housing (apartments) without needing special permits like rezoning. It mandates clear rules: buildings must be 1-20 acres, comply with building codes, include 10% affordable housing units for 20 years, and exclude historical sites or military areas. The law prevents cities from blocking demolition for these projects and limits height/density to match nearby multifamily zones. Signed into law in April 2025, it directly affects large-city development policies and housing options.

Issues: ✓ Housing

Bill status signed all 5 stages cleared

Introduction

Jan 2025

Committee Review

Mar 2025

House Passage

Feb 2025

Senate Passage

Mar 2025

Signed into Law

Apr 2025

Introduced Jan 13, 2025 Signed Apr 7, 2025

Maddy AI version diff · 2 comparisons

What changed between versions

House Engrossed Version → Chaptered Version · 5 edits

MODERATE

This bill was formally approved and enacted into law as Chapter 41, establishing new rules for multifamily residential development and adaptive reuse in Arizona municipalities with 150,000+ residents. The legislation sets specific requirements for when and how these developments can occur, including deadlines, eligibility criteria, and exemptions for historic and military areas.

Scope change

The bill's scope was expanded to include retroactive application from December 31, 2024, and added new subsections for adaptive reuse projects with specific setback and height provisions that were not clearly defined in the original version.

TIMELINE

Added retroactive application effective from December 31, 2024, and confirmed emergency status for immediate operation.

REQUIREMENT

New requirements for adaptive reuse projects including specific setback rules and height exemptions for rooftop equipment.

EXEMPTIONS

Added explicit exemptions for historic districts, military airports, federal aviation airports, and tribal lands.

DEFINITION

Added comprehensive definitions for key terms including adaptive reuse, economically obsolete, low-income housing, moderate-income housing, nonconforming structures, and rooftop appurtenances.

ELIGIBILITY

Clarified that developments do not count toward the one-mile proximity requirement for height and density calculations.

Introduced Version → House Engrossed Version · 7 edits · Mar 31, 2025

MODERATE

This bill amends Arizona's zoning laws to require large municipalities (150,000+ population) to allow multifamily residential development or adaptive reuse on at least 10% of existing commercial buildings without requiring rezoning. The bill establishes specific objective standards municipalities must follow, including requirements for site reviews, utility access, building codes, and affordable housing set-asides. It also defines exemptions for historic districts and military airports, and clarifies height and setback rules for redevelopment projects.

Scope change

The bill expands applicability to include adaptive reuse projects alongside new multifamily development, and adds specific exemptions for historic preservation areas and military aviation zones that were not clearly defined in the original version.

TIMELINE

The deadline for municipalities to establish standards was changed from 'within thirty days after effective date' to 'on or before January 1, 2025 within ninety days after the effective date'.

ELIGIBILITY

Added a new subsection F specifically addressing adaptive reuse projects with different demolition and setback requirements than new multifamily development.

DEFINITION

Added comprehensive definitions for key terms including 'adaptive reuse,' 'economically or functionally obsolete,' 'low-income housing,' 'moderate-income housing,' 'multifamily residential development,' 'nonconforming,' and 'rooftop appurtenances'.

REQUIREMENT

Modified height and density rules to allow greater flexibility, including provisions for mixed-use buildings and clarification that redevelopment projects don't count toward the one-mile proximity restriction.

Changed setback requirements for adaptive reuse to allow existing setbacks to remain if they are less restrictive than proposed multifamily setbacks, unless utility easements are involved.

Modified height exemption rules to include rooftop appurtenances like solar panels, elevators, and air conditioning equipment within the height exemption.

EXEMPTIONS

Added explicit exemptions for historic districts, local historic designations, National Register historic places, military airports, federal aviation airports, and tribal lands.

Floor votes · Senate Mar 31, 2025 · House Feb 20, 2025

How they voted

27–1

Passed · 2 other

Total votes 30

Mar 31, 2025

D Democratic13

11 Yea 2

84% Yea

R Republican17

16 Yea 1 Nay

94% Yea

Vote distribution

All Yea All Nay Mixed No data

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Amendments

Apr 7, 2025

Signed into law

Signed by Governor

executive

Mar 31, 2025

Upper · Passed

PASSED

upper

Mar 31, 2025

Upper · Passed

upper

Mar 5, 2025

Upper · Passed

upper

Feb 20, 2025

Lower · Passed

PASSED

lower

Feb 18, 2025

Lower · Passed

DPA

lower

Feb 4, 2025

Lower · Passed

DPA

lower

1 primary · 0 co-sponsors