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.
Los Angeles construction cost, Los Angeles renovation cost, Los Angeles ADU cost, Los Angeles kitchen remodel cost, Los Angeles home addition cost, Los Angeles permit timeline, Los Angeles building permit, TRUbee.