§ NM New Mexico
County permits
Los Alamos County
Los Alamos County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.
§ 01 Unincorporated
Unincorporated Los Alamos County.
If your property isn't inside an incorporated city, the county permit office handles your application directly.
- Permit authority
- Los Alamos County Community Development Department, Building Permits and Inspections Division
- Online portal
- Los Alamos County Building Permits and Inspections ↗
- Phone
- 505-662-8120
- building@lacnm.us
- Address
- 1000 Central Avenue, Suite 150, Los Alamos, NM 87544
§ 02 Jurisdictions
Cities in Los Alamos County
Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.
§ 03 County navigation
Information last verified for Los Alamos County, New Mexico. Permit rules and fees change frequently — verify current requirements with the issuing department before applying. Jaspector is an educational reference, not legal advice.