Tiny Homes: Surprise vs Tempe
How do tiny homes rules compare between Surprise, AZ and Tempe, AZ?
Surprise and Tempe have similar restriction levels.
Surprise, AZ
Maricopa County
Tiny homes in Surprise must comply with the adopted International Residential Code (IRC) and city zoning requirements. Tiny homes on foundations may be permitted as ADUs in qualifying zones. Tiny homes on wheels are classified as RVs and cannot serve as permanent dwellings in residential zones.
View full Surprise rules →Tempe, AZ
Maricopa County
Tiny homes on permanent foundations may be permitted in Tempe as ADUs under the city's Zoning and Development Code. Tempe allows both attached and detached ADUs on single-family lots. Tiny homes on wheels are classified as recreational vehicles and cannot serve as permanent residences. Arizona HB 2720 (2024) expanded ADU rights statewide, and Tempe updated its ADU ordinance accordingly.
View full Tempe rules →Key Facts Comparison
| Fact | Surprise | Tempe |
|---|---|---|
| On Foundation | May qualify as ADU in some zones | Permitted as ADU, must meet IRC standards |
| On Wheels | Classified as RV — not permanent dwelling | Classified as RV, no permanent residence allowed |
| Minimum Size | Typically 200+ sq ft habitable space | - |
| Building Code | IRC compliance required | - |
| Community Dev | (623) 222-1200 | - |
| ADUs Allowed | - | 1 attached + 1 detached per single-family lot |
| Height | - | Regulated by zoning district standards |
| State Law | - | AZ HB 2720 expanded ADU rights |
| Popular Use | - | Student housing near ASU, multigenerational living |
Highlighted rows indicate differences between cities.
Surprise FAQ
Can I live in a tiny home in Surprise?
Tiny homes on permanent foundations may be permitted as ADUs in qualifying zones. Tiny homes on wheels are classified as RVs and cannot serve as permanent dwellings.
What is the minimum house size in Surprise?
Minimum habitable space is governed by the IRC and zoning code. ADU-eligible tiny homes typically need at least 200 square feet of habitable space.
Can I park a tiny home on wheels in my yard?
A tiny home on wheels is classified as an RV and must follow RV parking rules. It cannot be used as a permanent residence in residential zones.
Tempe FAQ
Can I put a tiny house on my property in Tempe?
Foundation-based tiny homes may qualify as ADUs. Tempe allows one attached and one detached ADU per single-family lot. Tiny homes on wheels cannot be permanent residences.
How does Tempe's ADU ordinance work?
Tempe allows one attached and one detached ADU on single-family lots. Height and setbacks follow zoning district standards. A building permit is required.
Is there minimum square footage for an ADU in Tempe?
ADUs must meet International Residential Code minimums for habitable rooms. Contact Community Development for current specific size requirements.
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