An ADU permit in Los Angeles now takes just 30–60 days using pre-approved plans (down from 8–16 weeks), costs $5,000–$10,000 for design and permitting, and generates $2,800–$3,200 monthly rental income. New 2025 California laws (AB 1332, AB 976, SB 1211) eliminated owner-occupancy requirements, parking mandates for garage conversions, and simplified legalization of unpermitted units built before 2020. Pre-approved plans cost $3,500–$5,000; custom designs cost $15,000–$30,000