Free tool
Who owns your building?
Enter any Los Angeles address to see the building's official record and whether it's likely rent-stabilized (RSO) — straight from LA County Assessor data. The same public records CertRent uses to confirm a landlord actually owns the building.
Why look up your building?
- Confirm rent-control status — RSO decides how much your rent can legally rise.
- Know who you're really renting from before you sign or send a deposit.
- Verify a landlord reference — does the person actually own the building?
How it works
We match your address to its Assessor ID (AIN) using LA County's geocoder, then read the building's record from the County Assessor's public parcel roll — the same free, official data, no scraping.
One verified profile. Every application.
Free to start. Build your profile in minutes and share it with any Los Angeles landlord.