County Building Permits

Los Alamos County, NM - 2026 Building Permit Guide

Building permit information for unincorporated Los Alamos County and all incorporated cities. Find your jurisdiction's permit authority, application process, fees, and requirements.

New Mexico Updated March 2026

Important: Los Alamos County issues building permits only for properties in unincorporated areas of the county. If your property is inside an incorporated city, select your city below — that city's building department handles your permits, not the county.

Unincorporated Los Alamos County

Permit authority
Los Alamos County Community Development Department, Building Permits and Inspections Division
Phone
505-662-8120
Address
1000 Central Avenue, Suite 150, Los Alamos, NM 87544

Jurisdictions in Los Alamos County

Select your jurisdiction for local permit authority, portal links, application steps, fees, and inspection requirements.

Unincorporated Los Alamos County Permit guide → White Rock Permit guide →

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the relevant city or county department before applying.

Related New Mexico Resources

License Requirements Verify your contractor's New Mexico license → Contract Template Free homeowner-contractor agreement →

Need help with your project?

Navigating permits in Los Alamos County can be complicated.

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Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authorities listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.