Every Phase 1 project type for Los Angeles, in one place.
Permit office: Los Angeles Department of Building and Safety (LADBS).
Plan-check timeline: 6–10 weeks for typical residential plan check; 1–3 weeks for OTC permits; 12–20 weeks if multiple correction cycles.
Distinctive overlays: Hillside Construction Regulations, Specific Plan areas (Mulholland, Venice, Hollywoodland), High Fire Hazard Severity Zones, 35+ Historic Preservation Overlay Zones, and the 2018 Soft-Story Retrofit Ordinance.
Fee load: ~5–7% of construction valuation (building + plan check + electrical + plumbing + mechanical + school fees @ ~$4/sqft new conditioned space).
Largest city in the matrix — most search volume, most editorial competition.
SB-9 lot-splits processed administratively when compliant; LA's 2024 ADU streamlining matches the state 60-day mandate.