ADU Rules: Boulder City vs Paradise

Can I build an ADU on my property in Boulder City?

ADUs are NOT PERMITTED in Boulder City R1 single-family zones. Boulder City has opted for maximum restriction under state law. No detached ADUs or accessory dwellings allowed.

What are the size limits for an accessory dwelling unit in Boulder City?

R1 Zone ADUs: NOT PERMITTED. Detached Buildings: No living/sleeping use allowed. Variance: Not available for additional dwellings. Code: Title 11 Zoning / Community Development.

Are ADUs allowed in unincorporated Clark County?

Yes. Title 30 permits Accessory Apartments in the R-U, R-A, R-E, R-D, R-1, R-T, R-2, H-2, and H-1 zones. Recent amendments have removed the minimum lot size and one-bedroom cap, and basement ADUs are now explicitly allowed.

How big can an unincorporated Clark County ADU be?

Up to 1,200 sq ft for detached units, or 50% of the primary dwelling's floor area for attached units, under Title 30. Setbacks and lot coverage rules of the underlying zone still apply.

Is there a state ADU mandate in Nevada?

No. Nevada has no statewide ADU law equivalent to California's Gov Code §65852.2, so Clark County retains discretion on parking, owner-occupancy, and rental restrictions in Title 30.