Compare ADU zoning rules across 3 Arizona cities. Average ADU score: 5.3/10.
| City | Max Size | Setbacks | Permit Fees | Build Cost | 1BR Rent | Score |
|---|---|---|---|---|---|---|
| Phoenix | 900 sq ft | 15 feet | $2,500-$4,200 | $120,000-$240,000 | $1,250-$1,700/mo | 6/10 |
| Scottsdale | 1,000 sq ft or 75% of primary dwelling (whichever is less); 500 sq ft for second/third ADU | 25 feet | $5,000-$8,000 | $140,000-$280,000 | $1,500-$2,000/mo | 5/10 |
| Tucson | 75% of primary dwelling, up to 1,000 sq ft (minimum 650 sq ft guaranteed) | 20 feet | $3,500-$5,500 | $110,000-$220,000 | $1,100-$1,500/mo | 5/10 |
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