Phoenix ADU Law 2023: What Homeowners Need to Know
In November of 2023, the Phoenix City Council passed new regulations allowing casitas and accessory dwelling units (ADUs) to be built in the backyards of existing homes across the city.
This was a big deal. Before this ruling, building a separate living unit on a single-family lot was either impossible or buried in enough red tape to kill most projects before they started.
What Changed
The new regulations allow homeowners to build one ADU on their property, provided the structure meets setback, height, and lot coverage requirements. The rules were designed to improve affordable housing options — giving families the flexibility to house adult children, aging parents, or long-term renters.
What You Can Build
Under the current regulations, homeowners in Phoenix can build casitas ranging from small studios to full 3-bedroom units. The key requirements include:
- ✓The ADU must be on the same lot as your primary residence
- ✓Setback and height limits vary by zoning district
- ✓The structure must be fully permitted and inspected
- ✓Owner occupancy of either the main home or the ADU may be required
What This Means for You
If you own a single-family home in Phoenix with a backyard, you likely have the ability to build a permitted casita. That casita can generate $1,200–$2,500/month in rental income, add significant value to your property, or provide independent living space for family members.
How Space Break Helps
We handle 100% of the permitting process. City applications, structural engineering, inspections — you don't make a single call. We know the Phoenix ADU regulations inside and out because it's all we do. Four models, starting at $95,000, fully permitted and built by our in-house crew.