OpenViolations
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Public data should be usable by the public

New York City publishes millions of building violation records every year. They are technically open and practically unusable: split across agencies, keyed on identifiers no tenant has ever heard of, and wrapped by private sites that charge for a search. OpenViolations puts all of it in one place, searchable by address, free to read, with no account and no paywall.

Free means free

No paywall, no metered searches, no “create an account to continue.” An account exists only to save watchlists and send alerts.

Show the source

Every number on this site traces to a named public dataset with a visible sync timestamp. When a feed is late, the page says so.

Records, not verdicts

We publish what the city recorded. We do not editorialize about owners or tenants — the record speaks, and it is the same record for everyone.

Corrections in public

When we get something wrong, the fix is dated and stays visible. Silent edits are how data sites lose trust.

How we score buildings

The letter grade on every building page is arithmetic, not opinion. Seven inputs from the public record are converted to points on a fixed 0–100 scale — 0 is pristine, 100 is the worst the scale can express — and the total maps to a letter. It is a fixed scale, not a comparison to other buildings, and we publish the exact point values because a score you cannot audit is a score you should not trust.

Open Class C violationsup to 30 pts
6 points per open immediately hazardous HPD violation, capped at 30.
Open Class B violationsup to 20 pts
1.5 points per open hazardous HPD violation, capped at 20.
Heat & hot water recordsup to 20 pts
2.5 points per heat or hot water record in the last 24 months, capped at 20.
Unpaid OATH/ECB penaltiesup to 15 pts
1 point per $2,000 of balance due on summonses, capped at 15.
Bedbug filings with infestationsup to 5 pts
2.5 points per annual filing reporting infested units, capped at 5.
Open tenant litigationup to 5 pts
5 points per open HP action in Housing Court, capped at 5.
Active vacate orderflat 5 pts
A flat 5 points if any HPD or FDNY vacate order on the building is not closed.
A under 8 pointsB 8–21C 22–39D 40–59F 60 and up

A grade describes public records about a building, not the people living in it or the current condition of any single apartment. Records lag: a violation corrected yesterday may still read as open until the city processes the paperwork. Heat and bedbug inputs are derived from record text and filing data, so edge cases in the source data can miscount them — when they do, the corrections address below is the fix.

Every dataset we use

Every dataset behind this site, where it comes from, how often we pull it, and when it last landed. If a sync is late, it shows here before anyone has to ask.

2 of 14 datasets healthy
Datasets, sources and sync status
DOB Complaints ReceivedDOB3.1MHourlyJul 28 · 3:31 AMDelayed
DOB ViolationsDOB2.0MHourlyJul 28 · 5:15 AMBackfilling
ECB ViolationsDOB/ECB1.8MHourlyJul 28 · 3:31 AMDelayed
OATH Hearings Case StatusOATH400kHourlyJul 28 · 3:31 AMDelayed
HPD Housing Maintenance Code ViolationsHPD400kHourlyJul 28 · 3:31 AMDelayed
HPD Complaints & ProblemsHPD400kHourlyJul 28 · 3:31 AMDelayed
HPD Bedbug Reporting (LL69)HPD400kHourlyJul 28 · 3:31 AMDelayed
DOB Permit IssuanceDOB400kHourlyJul 28 · 3:31 AMDelayed
HPD LitigationsHPD239kHourlyJul 28 · 3:31 AMDelayed
HPD Multiple Dwelling RegistrationsHPD20kHourlyJul 28 · 4:26 AMDelayed
HPD Registration ContactsHPD20kHourlyJul 28 · 4:26 AMDelayed
FDNY Building Vacate ListFDNY357HourlyJul 28 · 3:31 AMDelayed
HPD Repair/Vacate OrdersHPD0HourlyJul 28 · 3:31 AMDelayed

Source: NYC Open Data (data.cityofnewyork.us). Failed syncs retry hourly. All data republished here free, with attribution.

Contact

Everything
hello@openviolations.org

One address for questions, press, data requests, security reports, and corrections. If a record on this site looks wrong, include the violation or summons number — we will check it against the source dataset and publish a dated note either way.

What we store about you

Nothing, unless you sign in — and then only your email address, your watchlist, and your alert preferences. No ad trackers, no data resale, no sharing addresses with landlords. Every violation record on this site is readable without an account.