Suspicious Buildings

Flagged based on verified review of tenant-submitted DHCR rent histories. Not a legal determination. Read full disclaimer

To make this list, a building must have at least one unit with a verified, tenant-submitted DHCR rent history meeting one of the criteria below. This is a public resource for tenants, advocates, and attorneys.

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How a building qualifies (any one)

Inconsistent reporting

A unit appears in DHCR registrations one year, disappears the next, and reappears afterward — a pattern that warrants a closer look but can sometimes result from filing errors.

IAI / DOB Gap

The unit was deregulated, but DOB filings for the building do not show cost affidavits matching the Individual Apartment Improvement (IAI) spending that would have been legally required to deregulate at that rent.

Exempted post-HSTPA

The unit was marked exempt from rent stabilization after HSTPA (June 14, 2019). Some post-HSTPA exemptions are legitimate (substantial rehabilitation, co-op/condo conversion, certain new construction); others merit scrutiny. Flag is a prompt to investigate, not a finding.

Landlord or property manager? If you can verify the lawfulness of a post-HSTPA exemption for a building on this list, submit documentation for review here. Verified buildings will be removed or annotated accordingly.

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All Inconsistent reporting IAI / DOB Gap Post-HSTPA exemption

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Score and Open HPD reflect habitability (HPD / DOB violations, complaints, court cases) and are independent of the rent-history flag reason. A building can have a clean habitability score and still appear here because of its rent history.

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Tenants — free

Live in one of these buildings? Get your building’s rent histories for free.

If you currently live in a flagged building, you can request the unit-level rent histories and flag reasoning at no cost. We require a one-time Stripe Identity check and proof that you live at the building (recent lease, utility bill, government mail, or other document showing your name and the building address).

Not accepted: landlords, property owners, property management companies, or their affiliates. Non-tenants (attorneys, researchers, journalists, etc.) can purchase the per-building report directly using the Purchase full report button ($199) on any listing above.

Disclaimer: A building appearing on this list does not constitute a legal finding. Flagged status is based on a review of tenant-submitted DHCR rent histories and does not imply wrongdoing by any owner or landlord. Tenants who suspect illegal deregulation should consult with a tenant attorney or contact the DHCR for an official determination.