Arizona ADU Law
Arizona's ADU market is moving from a niche construction category into a mainstream option for homeowners. Recent state law and city ordinances have unlocked your backyard — here's what you need to know.
Arizona House Bill 2720 requires larger Arizona municipalities to allow accessory dwelling units on lots where single-family homes are already permitted. Cities can no longer outright ban ADUs in residential zones.
Phoenix's public ADU guide confirms that state law and city ordinance allow two ADUs, and on some parcels three ADUs, per single-family detached house. That can mean a casita, a garage conversion and an attached unit — all on one lot.
Lower permitting friction. Bigger rental income potential. Real multigenerational housing without buying more land. We handle every code, setback and review on your behalf — so you don't have to read the ordinance to benefit from it.
By City
HB 2720 sets the floor — but each city writes its own ordinance on top. Here's a plain-English snapshot of what changes by location.
Snapshot only — ordinances change and lot-specific rules (setbacks, easements, overlays, HOA) always apply. We verify the exact rules for your address in writing before design starts.
FAQ
It applies to larger Arizona municipalities. We build across Phoenix, Mesa, Gilbert, Tempe, Glendale, Queen Creek and more — all covered.
In Phoenix, yes — up to two ADUs by ordinance, and three on qualifying parcels. We confirm your specific lot during the free site walk.
Some cities have owner-occupancy or short-term rental restrictions. We review them with you before design begins.
Most East Valley cities run 6–12 weeks. Phoenix is typically 8–12. HB 2720 has streamlined many reviews.
This page is general information, not legal advice. Specific lot rules, setbacks and HOA restrictions vary. We confirm everything that applies to your property in writing before any work begins.
