Long Island property data: Nassau and Suffolk parcels and sales
The short answer
Hercules covers every parcel in Nassau and Suffolk counties: owner, mailing address, property class, assessed value and recorded sales, organized by town and street, with full reports that add mortgages, equity and unpaid taxes in Nassau. Use it in the app, as a CSV, by API or through the MCP server.
| What the dataset holds today | Count |
|---|---|
| Parcels in Suffolk County, in 10 towns | 525,038 |
| Parcels in Nassau County, in 5 towns | 406,553 |
| Recorded sales | about 560,000 |
Live counts as of 2026-10-15. Figures marked “about” are table sizes rounded to three figures.
What it covers
- Every parcel in Nassau and Suffolk, with a free public page.
- Owner of record and mailing address, and whether the owner lives there.
- Property class, assessed value and lot size.
- Recorded sales with price and date.
- Full reports with mortgages, estimated equity and unpaid taxes in Nassau.
How to get it
- In the Hercules app, with search, saved lists and a CRM.
- List downloads as CSV on Pro and up.
- Inside ChatGPT, Claude, Cursor and other assistants through the Hercules MCP server.
- By API, or as a bulk file or daily feed for your own systems: talk to us.
Free sample
The property data sample report
See exactly what you get before you talk to anyone: live coverage, every field, and a full sample property record. Free, in your inbox in a minute.
- Live coverage of every open NYC foreclosure case
- Every dataset and field, from owners and mortgages to permits and violations
- A full sample property record, start to finish
- Every way to get it: web, exports, API, MCP and bulk files
Questions
- Can I download Nassau County property records with mortgage data?
- Yes. Full reports carry mortgages and sale history, and lists download as CSV on paid plans. Bulk files are available on request.
- Is there a Suffolk County foreclosure data feed?
- Hercules shows foreclosure filings on Long Island full reports. Talk to us about a feed for Nassau and Suffolk.
- Is Long Island data free to look at?
- Yes. Every parcel has a free public page; full reports use credits.