ChatADU reads the parcel, zoning, setbacks, and permit records for your lot, then tells you what you can build, what it costs, and what it rents for.
Can I build? · 3118 S Denison Ave
Zoning, hillside and fire zones, coastal and historic overlays, easements, and hazards, checked against LA's ADU rules for your exact lot.
See a sample reportChatADU draws your lot, applies the setbacks, and places the biggest legal ADU behind the house. Keep the garage or knock it down and compare.
See a sample report620 sf detached ADU
Construction, design, utilities, solar, LADBS and school fees, line by line. Permit time comes from real LADBS permits in your community plan area.
See a sample reportRent
$2,328/mo
Yield on cost
6.6%
Payback
15 yrs
Value added
$373k
What the ADU rents for, yield on cost, payback, the property tax change, and how HELOC, refinance, and ADU loans compare.
See a sample reportOne price, one lot
Check any lot free to see if an ADU fits. Unlock the full report for the numbers you need before you call an architect.
The City of Los Angeles today, every neighborhood from San Pedro to the Valley. More California cities are next.
Parcel lines and buildings come from LA County and the city's ZIMAS maps. Zoning, overlays, and hazards come from city GIS. Permit times and neighbor ADUs come from LADBS permit records. Rents start from HUD's 2026 Fair Market Rents. Costs are stated assumptions you can edit. The AI never makes up a number.
We checked it against permits the city actually issued. On 2918 S Alma St, ChatADU found 620 sf; the permitted ADU is 614 sf. A survey and a title report are still the final word on lot lines and easements, and the report says so.
No. It's a feasibility report: it tells you if an ADU is worth pursuing and what to ask your designer and contractor. You still need plans and a permit from LADBS.
You'll see that before you pay. The free preview tells you whether an ADU fits and how big. The $30 report adds the cost, timeline, rent, and return.
Type it in. ChatADU pulls the parcel, runs the rules, and shows you what fits in under a minute.
