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PermitRoadmap

Do I need a permit for accessory dwelling unit (adu) in Las Vegas?

Permit required

Yes. In New Mexico, accessory dwelling unit (adu) generally requires a permit, and Las Vegas is no exception.

No statewide ADU law is in force: HB 554 (2025, passed the House 50 to 10 and was postponed indefinitely in a Senate committee) and HB 17 (2026, tabled in committee) both died, so ADU zoning rules are set by each city or county. A new residential building may not be occupied until a certificate of occupancy certifies compliance with all codes (NMSA 60-13-45(C)). A homeowner permit covers only the owner's primary residence and appurtenant structures and does not apply to rental property (14.5.2.18 NMAC). For a new or changed septic system, CID's guide directs owners to the NMED Liquid Waste Program.

Get the checklist for your accessory dwelling unit (adu) in Las Vegas. A free check first, then a free printable Permit Prep Pack.

Local detail for Las Vegas: Las Vegas has no certified local building official, so the New Mexico Construction Industries Division (CID) issues building, electrical, plumbing and mechanical permits and does the inspections. The city issues the zoning clearance you need first. CID's Santa Fe office is listed here; call to confirm it handles your address.

Documents you may need

  • Building permit applicationRequired
  • Site plan with setbacks and zoning approvalRequired
  • Foundation, framing, and floor plans with egress and smoke and carbon monoxide alarm locationsRequired
  • Energy code compliance documents (14.7.6 NMAC)Likely required
  • Separate electrical, plumbing, and mechanical permitsLikely required

Possible inspections

  • Foundation inspection
  • Frame inspection
  • Rough electrical, plumbing, and mechanical inspections
  • Final inspection and certificate of occupancy

Frequently asked questions

Do I need a permit for accessory dwelling unit (adu) in Las Vegas?
Yes. In New Mexico, accessory dwelling unit (adu) generally requires a permit, and Las Vegas is no exception. The documents and inspections sections on this page list what the building department typically asks for.
Who issues the permit in Las Vegas?
The local building department for Las Vegas handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
How do I find out the exact requirements for my project?
Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.

PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.