ADU Resources.
Everything you need to research, plan, and understand your ADU project in Los Angeles County.
Property Lookup
Check zoning, setbacks, and ADU buildability for your specific parcel.
ADU Cost Calculator
Estimate construction costs, permit fees, and project timeline for your ADU in Los Angeles County.
ADU Learning Center
Glossary, process guides, and plain-English explanations of ADU permits, zoning, and regulations.
Articles
In-depth guides on ADU costs, permits, financing, and LA County regulations — written by LADU's team.
ADU Rules by City
City-specific ADU rules, setbacks, and regulations for Los Angeles County.
LA County Permit Stats
19,000+ permitted ADUs across LA County. City-by-city trends, YoY data, and permit valuations.
MCP Server (for AI agents)
Connect Claude, Cursor, and other AI assistants to LADU's ADU buildability checks, city rules, cost estimates, and permit data.