Three levels, each answering a different question: what the statewide rules say about your address, what the adopted code says about your parcel, and whether a specific unit actually fits on it.
The free California site report is available for any property in the state. Paid reports are currently available for properties in San Diego, Ventura and Los Angeles counties.
Free
California Site Report
A preliminary screen of the statewide ADU framework for any California address.
Includes
Governing jurisdiction identified from official boundaries
Statewide ADU framework
Conditions requiring verification
Printable worksheet for your local planning counter
03Likely size, setback, parking, and height considerations
04Fire, coastal, grading, septic, and utility screens
05Permit agencies and likely consultant disciplines
06Preliminary fee and construction-budget considerations
07Official government resources and recommended next steps
Why the split
A profile is not a feasibility study.
The Zoning & Site Profile establishes what the parcel is and what the adopted code requires of it, each item carried with its citation. It does not decide whether a particular unit fits, because that question has no answer without a footprint to test: setbacks, lot coverage and access only mean something once there is a building to measure against them. That is the Site Plan Study, which is why it asks you to choose a plan first and why it is prepared by a person rather than generated.