City guides

Los Angeles County (unincorporated) building permits & contractor rules

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Permit officeLA County Public Works, Building and Safety Division (unincorporated areas; Los Angeles area)
Address900 S. Fremont Avenue, 3rd Floor, Alhambra, CA 91803
HoursHeadquarters 7 a.m.–5 p.m. Mon–Thu; over-the-counter plan review 7–11 a.m. Mon–Thu
PhoneBuilding Plan Check (626) 458-3173
Online permitsEPIC-LA (electronic permitting/plan review)
Our data sourceLA County eGIS: EPIC-LA Case History

Contractor licensing

  • State: an active California CSLB license is required for contractors (licensed-contractor declaration on the permit). (source)

Bonding & insurance

  • State law: permit applicants sign a workers' compensation coverage or exemption declaration. (source)

Notable local rules

  • Covers unincorporated LA County communities; incorporated cities (e.g. City of Los Angeles) have their own permit offices. (source)

Last checked Oct 14, 2026. Lead count generated Oct 14, 2026 18:40 UTC from our live database. This page is for information only and is not legal advice. Requirements change: always verify with the city and state agencies linked here before bidding or starting work.