County building permit guide
Los Angeles County, California building permits — complete guide (2026)
Los Angeles County is California’s largest and most complex permitting market. Los Angeles County Public Works Building and Safety handles building permits for many unincorporated areas through EPIC-LA, while incorporated cities such as Los Angeles, Long Beach, Glendale, Pasadena, Santa Clarita, and Torrance operate their own permit offices.
Avg cost: $200–$1
200+
Processing: 4–12+ weeks
~80K permits/yr
~10M residents
$200–$1,200+Avg permit cost
4–12+ weeksProcessing time
~80,000Permits/year
Very ADU-friendly; city-dependentADU-friendly
Ready to apply for your Los Angeles County, California permit?
County Building and Safety generally serves unincorporated areas and certain contract cities. City of Los Angeles uses LADBS. Use the LA County service locator or city permit office before applying.
Apply through EPIC-LA ↗
Los Angeles County, California Building Department
Yes
Los Angeles County Public Works — Building and Safety
(626) 458-3173
Mon–Thu 7:00am–5:00pm PT; verify office-specific hours
900 S. Fremont Ave, Alhambra, CA 91803
EPIC-LA
Verify jurisdiction before applying. A Los Angeles County address may be under LA County Public Works, City of Los Angeles LADBS, or another incorporated city. Fire hazard, seismic, coastal, hillside, and historic-overlay rules can change submittal requirements.
Permit fees — Los Angeles County, California, 2026
| Permit type | Fee range | Processing | Notes |
|---|---|---|---|
| New Construction | $800–$3,500 | 6–12 weeks | Seismic design mandatory; CalGreen required |
| ADU | $300–$1,500 | 3–8 weeks | SB9/AB68 streamlined; 60-day approval window |
| Room Addition | $400–$1,800 | 4–8 weeks | Seismic upgrades for older homes; Chapter 7A in VHFHSZ |
| Roofing | $150–$500 | 1–3 weeks | Class A required in VHFHSZ; cool roof requirements |
| Pool | $400–$1,200 | 4–8 weeks | Barrier fence enforced; drainage plan required |
| Solar | $100–$350 | 1–2 weeks | SolarAPP+ accepted; CAL FIRE approval in fire zones |
| Electrical | $100–$350 | 1–2 weeks | Panel upgrades common; EV conduit required in new garages |
| HVAC | $100–$300 | 1–2 weeks | Title 24 compliance; heat pumps for new construction |
| Plumbing | $75–$250 | 1–2 weeks | Low-flow fixtures enforced; greywater permits available |
| Fence | $75–$200 | 1–2 weeks | Non-fire-rated wood restricted in VHFHSZ |
How to get a permit in Los Angeles County, California
1
Verify fire hazard zone
Check CAL FIRE VHFHSZ maps. Chapter 7A requires ignition-resistant walls, Class A roofing, ember-resistant vents in fire zones.
2
Confirm city vs. county jurisdiction
Use the LA County GIS portal to confirm whether you use EPIC-LA (City) or LADBS ePermit (unincorporated county).
3
Check seismic requirements
Seismic Design Category D. Additions over 50% of structure value may trigger upgrades for older soft-story homes.
4
Submit plans online
Simple permits (re-roof, solar, water heater) often qualify for over-the-counter approval.
5
Meet CalGreen standards
All new construction requires water-efficient fixtures, EV conduit in new garages, and waste diversion.
6
Schedule inspections
Trade inspections available within 1–3 business days online.
Jurisdictions within Los Angeles County, California
Special zone requirements
Very High Fire Hazard Zone
Hillside, eastern and northern LA County
Chapter 7A requires Class A roofing, ignition-resistant siding, ember-resistant venting, and 0–5 ft noncombustible zone.
Seismic Zone 4
County-wide
All new construction requires seismic design; additions may trigger soft-story evaluation in older homes.
California Coastal Zone
West-facing coastal strip
Coastal Development Permit required within ~1,000 ft of coast. Adds 2–6 months to timelines.
Frequently asked questions — Los Angeles County, California
What is VHFHSZ?
Very High Fire Hazard Severity Zone covers most LA hillside areas. Chapter 7A requires fire-resistant materials for walls, roofing, eaves, decking. Adds $10–$40/sq ft to material costs.
How does LA County ADU permitting work?
ADUs under 800 sq ft must be approved within 60 days. Impact fees waived under 750 sq ft. LADBS offers pre-approved standard plans for faster approval.
LADBS vs. City of LA building dept?
LADBS covers unincorporated LA County. City of LA uses EPIC-LA. They are separate agencies with different fee schedules. Check LA County GIS portal.
Special requirements for hillside properties?
Geological reports, slope stability analysis, and hillside grading permits required. Retaining walls over 3 feet need structural engineering.
Official sources: LA County Public Works Building and Safety / EPIC-LA; LA County Planning EPIC-LA; LA County Building Permit Viewer; 2025 California Building Standards Code; 2025 California Energy Code; U.S. Census BPS.