About Rent History Analyzer

Rent History Analyzer is a free, instant analysis tool for New York City tenants who want to understand their apartment's rent stabilization status, identify potential rent overcharges, and uncover patterns that may have led to wrongful deregulation. By uploading the DHCR rent history document for an apartment, tenants receive a clear, year-by-year breakdown of legal regulated rents, actual rents paid, permit activity, and registration anomalies — all in seconds.

The app is built for renters, tenant advocates, housing organizers, and legal aid attorneys who need fast, reliable insight into a building's regulatory history without wading through dozens of pages of DHCR records. Whether you suspect you've been overcharged, are preparing a formal complaint with the NYS Division of Housing and Community Renewal, or are simply trying to understand your tenancy, the analyzer surfaces the information that matters most. The app also helps users prepare official forms — such as the RA-89 overcharge complaint and the REC-1 records request — directly from the analysis output.

Rent History Analyzer is built and maintained by RIOT MOTION LLC, the team behind RentHistory.org, a project dedicated to making New York's rent regulation system more transparent and accessible. Documents are processed securely, results are protected by a one-time email PIN, and no analysis is shared without the user's consent. This tool is informational and does not constitute legal advice.