Administrative overview · FIPS 35028
Los Alamos County permit authority
The first compliance decision is jurisdictional: identify the office with statutory authority over your parcel, then use its filing and inspection sequence to keep the project moving.
Jurisdictional status
County
This county profile is the primary starting point for unincorporated-area permitting.
Responsible agency
Los Alamos County Community Development Department, Building Safety Division
For a project in or near Los Alamos County, this office is the identified point of contact for permit intake, statutory code enforcement, plan review coordination, and inspection release conditions. Confirm the parcel’s boundary and project type before relying on the county lane.
Direct contact
505-662-8120
Call before mobilizing if the project has a boundary, occupancy, fire, septic, or utility question.
Permit counter
Los Alamos County Community Development Department, 1000 Central Avenue, Suite 150, Los Alamos, NM 87544
Operating hours
Operating hours not verified
Review expectation
Most residential permits take about three business days; the County's current permitting page sets an average goal of three days or less for residential permits and five days or less for commercial permits.
Compliance workbench
Choose the next project decision.
Apply online
Open the verified digital gateway, application form, and review timeline.
Open guide →Fees & penalties
Understand fee schedules, enforcement exposure, and stop-work liabilities.
Open guide →Codes & exemptions
Read the code framework, minor-work exemptions, and inspection lane.
Open guide →Agency website
Visit the primary public source for current notices and contact changes.
Open guide →Source trail
Official sources for this profile
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
Frequently asked questions for Los Alamos County
Who handles permitting for this jurisdiction?
Los Alamos County Community Development Department, Building Safety Division is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.
How should I begin an application?
Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact 505-662-8120.
How long might review take?
Most residential permits take about three business days; the County's current permitting page sets an average goal of three days or less for residential permits and five days or less for commercial permits.
How are inspections scheduled?
Keep work accessible and the permit card and paperwork on site. Call Los Alamos County Building Safety at 505-662-8120 before 4:00 p.m. on the day before the planned inspection; electrical, plumbing, and mechanical inspections are handled by NM CID.
Which codes and exemptions should I review?
Los Alamos County states that building permit plans must meet the 2021 International Building Code and the Incorporated County of Los Alamos Code; New Mexico CID separately handles state electrical, plumbing, and mechanical permits. No broad exemption list was identified. The County provides a checklist for small accessory structures up to 200 square feet residential or 120 square feet commercial, but applicants must confirm with Building Safety whether a permit is required for the specific project.