Tiny home rules in Phoenix, AZ — covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds — determine where they are legal and how they get permitted.
Phoenix allows accessory dwelling units (ADUs) under Zoning Ordinance Section 706, which can function as tiny homes. Up to 2 ADUs are permitted per single-family lot (one attached, one detached). ADUs are capped at 75% of the primary dwelling's floor area, with a 1,000 sq ft maximum on lots up to 10,000 sq ft. HOAs may impose additional restrictions.
Phoenix classifies tiny homes based on construction type. Foundation-built tiny homes are treated as standard dwellings and must meet local building codes including minimum square footage (often 400 to 800 sq ft). Tiny homes on wheels (THOW) are typically classified as RVs or mobile homes with different zoning restrictions. Appendix Q of the IRC provides building standards for tiny houses under 400 sq ft. ADU ordinances may provide a pathway for tiny homes as secondary dwellings. Utility connections, septic/sewer, and foundation requirements apply. Some jurisdictions have created specific tiny home zoning districts or overlay zones.
Unpermitted dwellings: removal or retroactive permitting. Zoning violations: fines and required relocation. Occupancy without certificate: prohibited.
Phoenix, AZ
Phoenix follows the 2018 Phoenix Building Construction Code Chapter 9 (IBC/IRC) and Ordinance G-5898 (effective April 18, 2014). Smoke alarms are required in...
Phoenix, AZ
Phoenix has no city ordinance restricting lawn ornaments, statuary, or year-round decorations on residential property. PCC Section 23 requires property maint...
Phoenix, AZ
Phoenix has no city ordinance regulating residential inflatable holiday displays. Size, lighting hours, and blower noise are governed by HOA CC&Rs. PCC Secti...
Phoenix, AZ
Phoenix has no municipal ordinance regulating residential holiday lights. Lighting timing, brightness, and animation are governed by subdivision CC&Rs and HO...
Phoenix, AZ
Phoenix requires building permits for outdoor kitchens with gas lines, plumbing, electrical wiring, or structural roofs. Trade permits filed through Planning...
Phoenix, AZ
Phoenix has no specific ordinance regulating residential smokers or pellet grills. ADEQ Rule R18-2-219 prohibits visible emissions exceeding 20 percent opaci...
Side-by-side rule comparisons with other cities in Maricopa County.
See how other cities in Maricopa County handle tiny homes.
See how Phoenix's tiny homes rules stack up against other locations.
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