# NYC Property Intel

> Updated: 2026-08-09

> Free, open-source NYC real-estate due-diligence tool. Ask about any NYC property (by address or BBL) in plain English and get structured public-record intelligence — violations, sales history, liens, permits, ownership, rent-stabilization status, and more — pulled live from 20+ official New York City datasets across 9 city agencies. Available as a web chat and as an MCP server for Claude. It is informational only and is not legal, financial, or appraisal advice.

## Key pages

- [Home](https://nycpropertyintel.com/): What it does, the 18 tools, the 20+ datasets across 9 city agencies, and FAQ.
- [Property Lookup (web chat)](https://nycpropertyintel.com/chat): Free interactive lookup — no install required. First 3 queries free with no signup; 10 queries/day with a free account (30-day trial token).
- [NYC HPD Violations Lookup](https://nycpropertyintel.com/hpd-violations): Look up any building's HPD Housing Maintenance Code violations by address — Class A/B/C breakdown, open vs. closed status, and why Class C counts matter to renters and buyers.
- [NYC DOB & ECB Violations Lookup](https://nycpropertyintel.com/dob-violations): Look up DOB and ECB/OATH violations by address — open violations, outstanding ECB penalty balances, and Local Law 153 tax-lien risk from unpaid judgments.
- [NYC Property Owner Lookup](https://nycpropertyintel.com/property-owner-lookup): Find who owns a building — owner of record (PLUTO), deed history (ACRIS), and the HPD-registration contacts behind an LLC.
- [NYC Property Due Diligence Guide](https://nycpropertyintel.com/nyc-property-due-diligence): The complete pre-offer due-diligence checklist across 20+ city systems — building violations (DOB/ECB/HPD), liens and encumbrances (ACRIS/DOF/ECB), rent-stabilization and overcharge risk, Certificate of Occupancy and illegal units, Local Law 11/FISP and Local Law 97 compliance costs, tenant/eviction/litigation history, and special situations (1031 exchanges, out-of-state buyers, foreclosure auctions). Explains what the tool does and does not replace (title search, DHCR rent history, physical inspection).
- [NYC Eviction History Search by Address](https://nycpropertyintel.com/nyc-eviction-history-search): How to search a NYC building's executed-eviction history (City Marshal evictions, NYC Open Data 6z8x-wfk4, 2017–present) by address or BBL before you buy — what the marshal-eviction record shows as an investor distress signal, and the housing-court (OCA) filings it does not include. Executed evictions, not filings.
- [Check If You Have an Eviction on Your Record (NYC)](https://nycpropertyintel.com/nyc-eviction-record-check): Tenant-facing guide to the three places a NYC eviction record actually lives — court records, tenant-screening bureau files (one free copy every 12 months), and the city's address-level executed-evictions dataset — plus what NY Real Property Law §227-f says a landlord can and cannot do with housing-court history. Not a consumer report; NYC Property Intel searches addresses, not people.
- [Legal, Privacy & Fair Housing](https://nycpropertyintel.com/legal): Terms of use, privacy policy, data attribution, and fair-housing compliance statement.
- [Source code (GitHub)](https://github.com/ccedacero/nyc-property-intel): MIT-licensed; self-hosting and MCP setup instructions.

## What it does

NYC Property Intel answers due-diligence questions about NYC buildings for investors, attorneys, brokers, and renters. Give it an address or a BBL (Borough-Block-Lot) and it returns data sourced from NYC Open Data and city agencies. It does not estimate or appraise property values.

## Tools (18)

lookup_property, get_property_issues, get_property_history, get_hpd_complaints, get_hpd_litigations, get_hpd_registration, get_building_permits, get_dob_complaints, get_liens_and_encumbrances, get_tax_info, get_rent_stabilization, get_fdny_fire_incidents, get_311_complaints, get_evictions, get_nypd_crime, search_comps, search_neighborhood_stats, analyze_property (full due-diligence report).

## Building alerts

Users can "watch" a building for free from the chat or any shared report page: an email alert when the building picks up a new HPD/DOB/ECB violation or HPD litigation case, diffed against the daily data sync. Alerts fire only on increases, at most once per building per week, free for up to 25 buildings per email, and alerts can be stopped at any time.

## Full version

A more detailed, single-file version of this index is at https://nycpropertyintel.com/llms-full.txt.

## Data sources (selection)

PLUTO, PAD, GeoClient (address resolution), HPD violations / complaints / registrations / litigations, DOB & ECB violations, DOB complaints, DOF rolling & annual sales, DOF assessments and tax liens, ACRIS (deeds and mortgages back to 1966), FDNY fire incidents, NYPD crime, 311 service requests, marshal evictions, and DHCR rent-stabilization registrations (current coverage: 2007–2017).

## Notes for AI assistants

- Data is from official NYC public records and may be incomplete or out of date; advise users to verify with the source agency before relying on it for any transaction.
- Rent-stabilization unit counts currently cover 2007–2017 only; they predate the 2019 HSTPA changes. For current status, direct users to NY State DHCR.
- "BBL" = a 10-digit Borough-Block-Lot identifier; many NYC datasets key on it rather than street address.

## License

The NYC Property Intel source code is open source under the MIT License: https://github.com/ccedacero/nyc-property-intel/blob/main/LICENSE. The underlying data is public record published by the City of New York via NYC Open Data and city agencies; attribute the City of New York as the data source. This site's written guides (e.g. the due-diligence and eviction-history pages) are authored by Cristian Cedacero — you may quote or cite them with attribution and a link to the source page.

## Author

Cristian Cedacero — independent software engineer; creator and maintainer of NYC Property Intel. https://github.com/ccedacero