ADU Rules: Surprise vs Tempe
How do adu rules rules compare between Surprise, AZ and Tempe, AZ?
Surprise and Tempe have similar restriction levels.
Surprise, AZ
Maricopa County
Accessory dwelling units (ADUs) in Surprise are regulated through the zoning code. ADUs may be permitted on certain residential lots depending on zoning district, lot size, and specific development standards. Arizona has been expanding ADU allowances through recent legislation.
View full Surprise rules →Tempe, AZ
Maricopa County
Tempe permits Accessory Dwelling Units (ADUs) in residential zones following a 2022 ordinance update. ADUs can be detached, attached, or converted from existing structures. They must meet size, setback, and design standards but do not require additional parking.
View full Tempe rules →Key Facts Comparison
| Fact | Surprise | Tempe |
|---|---|---|
| Permitted | In certain zones with standards | - |
| Permit Required | Yes — building permit | - |
| Size Limits | Max sq ft cap applies | - |
| Community Development | (623) 222-1200 | - |
| Max Size | - | 75% of primary home or 1,000 sq ft |
| Setbacks | - | 5 feet from side and rear lines |
| Parking | - | No additional parking required |
| STR Use | - | Not permitted for rentals under 30 days |
| Design | - | Must match primary dwelling style |
Highlighted rows indicate differences between cities.
Surprise FAQ
Can I build an ADU in Surprise?
ADUs may be permitted depending on your zoning district and lot size. Contact Community Development at (623) 222-1200 to check your property's eligibility.
What are the size limits for an ADU?
ADUs have maximum square footage limits, often a percentage of the primary dwelling or a fixed cap. Specific limits depend on your zoning district.
Can I rent out an ADU?
ADU rental is generally permitted, subject to city and HOA regulations. Check your zoning code requirements and CC&Rs for any restrictions.
Tempe FAQ
Can I build an ADU in Tempe?
Yes. Tempe allows one ADU per single-family lot, up to 1,000 square feet or 75% of the primary dwelling. A building permit is required.
Can I rent out my ADU on Airbnb?
No. Tempe's ADU ordinance prohibits using ADUs as short-term rentals (under 30 days). Long-term rentals are permitted.
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