Maricopa County, AZ Accessory Structures: ADU Owner Occupancy (2026)
Key Facts
- Long-term ADU rental
- No owner-occupancy required
- Governing provision
- MCZO Article 602.3, Occupancy and Tenancy
- Geographic scope
- Unincorporated Maricopa County only
- Exception
- Short-term rental use requires owner residency
Summary
Maricopa County does not require an owner to live on the property when adding an accessory dwelling unit. ADUs may be rented long-term independently, with no familial or employment tie to the main house required.
A. ADUs may be leased or occupied independently of the principal dwelling as long-term rental housing. B. No familial, marital, or employment relationship is required between occupants of the principal dwelling and the ADU.
Full Breakdown
Article 602.3 of the Maricopa County Zoning Ordinance sets ADU standards for single-family lots in unincorporated Maricopa County. Under its Occupancy and Tenancy provision, ADUs may be leased or occupied independently of the principal dwelling as long-term rental housing, and no familial, marital, or employment relationship is required between occupants of the main house and the ADU. The parcel owner is therefore not obligated to reside on site for a standard long-term ADU rental; owner residency comes into play only when the ADU is instead used as a short-term rental.
Violations & Fines
No standard-ADU violation exists here because owner-occupancy isn't required for long-term rentals; using an ADU as a short-term rental without qualifying owner residency instead breaches the county's separate STR standards under Article 602.2, subject to zoning code enforcement.
Frequently Asked Questions
Does the ADU owner have to live on the property in Maricopa County?
When would owner residency be required instead?
Sources & Official References
Other rules in Maricopa County
Compare Maricopa County to another location·View the Arizona accessory structures overview
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