Best Free NYC Building Violation Lookup Tools (2026)

01 · THE SHORT ANSWERThe best free NYC violation lookup tools

The best free ways to look up NYC building violations in 2026 are the city's own portals — DOB NOW / BIS for buildings, HPD Online for housing, and NYC CityPay for OATH/ECB fines — plus a free address tool like ViolationWatch's that pulls them together. Each official portal is authoritative for its own agency, totally free, and has one shared weakness: no alerts and no memory. They tell you what's open only if you remember to check. Here's which to use for what.

02 · HOW WE PICKEDThe criteria

This is written by the ViolationWatch team, so verify the specifics yourself. We judged each free tool on: coverage (which agency/data), what it shows, ease of use, and the honest limitation.

03 · THE FREE TOOLSFive free ways to check

1. DOB NOW & BIS — for building violations & permits

• What it is: The Department of Buildings' official systems. BIS holds legacy records; DOB NOW holds current filings.
• Best for: DOB violations, complaints, permits, and stop-work orders on a specific building.
• Limitation: Records are split across two systems, and the interface is built for case-by-case lookups, not monitoring.

2. HPD Online — for housing violations

• What it is: Housing Preservation & Development's portal for the housing-maintenance side.
• Best for: Class A/B/C HPD violations, complaints, and registration status on rental buildings.
• Limitation: HPD only — it won't show DOB, FDNY, or ECB. Heat-season complaint volume can bury what matters.

3. NYC CityPay (OATH/ECB) — for fines & hearings

• What it is: The city's payment and lookup portal for ECB violations adjudicated at OATH.
• Best for: Checking the penalty, hearing date, and balance attached to a violation.
• Limitation: Shows the fine, not the underlying condition — you still need the DOB or FDNY record for context.

4. NYC Open Data — for bulk & research

• What it is: The city's public datasets of violations and complaints, downloadable in bulk.
• Best for: Analysts and developers pulling many buildings at once.
• Limitation: Not built for a quick single-address answer; data refreshes on a delay and takes work to interpret.

5. ViolationWatch free lookup — one address, every agency

• What it is: A free address tool that runs a single lookup across DOB, HPD, ECB, OATH, FDNY, 311 and more in one place.
• Best for: Getting one consolidated picture of a building without visiting four separate government sites.
• Limitation: The free tool is a one-time snapshot — continuous monitoring with alerts is the paid product ($9/building/month).

04 · WHERE FREE TOOLS FALL SHORTThe shared blind spot

Every free option above has the same gap: they're reactive. There are no alerts, so you only learn about a violation if you happen to check — and each agency is a separate silo, so a complete picture means four or five different lookups. By the time a manual checker notices a new Class C HPD complaint or a stop-work order, a curable problem can already be a fine. Free tools are perfect for an occasional one-building check; they are not a monitoring system.

05 · QUICK PICKERWhich free tool to use

• Checking DOB violations or permits? → DOB NOW / BIS.
• Renting out a building (HPD)? → HPD Online.
• Need a fine amount or hearing date? → NYC CityPay (OATH/ECB).
• Want one answer across every agency? → a free consolidated lookup.
• Need to never miss the next one? → that's monitoring, not a free lookup.

Last updated: June 2026.

Try a consolidated free NYC violation lookup across every agency at once, compare paid options in our best monitoring tools guide, or start a 7-day trial to turn a one-time lookup into real-time alerts.