Compare ADU zoning rules across 2 Nevada cities. Average ADU score: 3.5/10.
| City | Max Size | Setbacks | Permit Fees | Build Cost | 1BR Rent | Score |
|---|---|---|---|---|---|---|
| Henderson | 25% of the main single-family home's square footage (excluding carports, garages, unfinished basements), max 1,000 sq ft per Review-Journal reporting; some 2026 secondary sources cite a 1,200 sq ft cap — confirm the current limit with Henderson Community Development | Per underlying zoning district; minimum 6-ft separation from the main residence required — confirm exact district setbacks with Henderson Community Development | Confirm with Henderson Development Services Center | $130,000-$250,000 | $1,300-$1,650/mo | 3/10 |
| Las Vegas | No separate ADU cap; total floor area of ALL accessory structures limited to 50% of the principal dwelling's floor area, and ground floors of accessory buildings may not cover more than 50% of the rear yard (19.08.040) | 3 feet minimum for detached accessory structures, plus 6-ft separation from the main dwelling; no setback required from a property line abutting an alley | Special Use Permit reported at $1,030 ($500 application + $500 notification + $30 recording, per Las Vegas Review-Journal) plus valuation-based building permit fees — confirm current fee schedule with the city | $130,000-$250,000 | $1,150-$1,450/mo | 4/10 |
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