Compare ADU zoning rules across 3 Colorado cities. Average ADU score: 7.7/10.
| City | Max Size | Setbacks | Permit Fees | Build Cost | 1BR Rent | Score |
|---|---|---|---|---|---|---|
| Boulder | 800 sq ft (market-rate); 1,000 sq ft (affordable ADU program) | 10 feet | $1,900-$3,200 | $160,000-$320,000 | $1,600-$2,100/mo | 8/10 |
| Colorado Springs | 50% of principal dwelling or 1,250 sq ft (whichever is less); 750 sq ft max if principal < 1,500 sq ft | 12 feet | $1,800-$3,000 | $130,000-$260,000 | $1,250-$1,700/mo | 7/10 |
| Denver | 864 sq ft | Must be within rear 35% of lot; 5 ft minimum rear setback | $1,600-$2,700 | $140,000-$280,000 | $1,400-$1,900/mo | 8/10 |
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