ADU Rules in Las Vegas, NV — 2026 Guide
Check if your Las Vegas property qualifies for an ADU in 20 seconds
Las Vegas ADU Rules at a Glance
Las Vegas has limited ADU support. Here is what you need to know.
- Las Vegas allows "companion units" on lots zoned R-1 (single-family residential).
- Maximum companion unit size of 1,000 sqft or 50% of primary home area.
- Owner-occupancy is required on the primary dwelling.
- HOA restrictions (common in Las Vegas subdivisions) may still prohibit ADUs.
What ReadyPermit Checks for Las Vegas Properties
Enter any Las Vegas address and get an instant ADU feasibility analysis covering:
Zoning Compliance
Verify your Las Vegas lot is zoned for ADU construction under current NV and local rules.
Setbacks & Coverage
Check required setbacks, lot coverage limits, and height restrictions for your specific parcel.
ADU Size Limits
Calculate the maximum ADU square footage allowed based on your lot size and primary dwelling.
Permit Requirements
Understand what permits and approvals Las Vegas requires before you can break ground.
Flood & Hazard Zones
Identify if your property falls in a flood zone, fire zone, or other hazard overlay.
Lot & Parcel Data
Pull parcel boundaries, lot dimensions, and existing structures from county records.
Check Your Las Vegas Property Free
Enter your address below. In under 20 seconds you will know if your Las Vegas lot qualifies for an ADU — no phone calls, no waiting.
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