Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. Every office link was opened and checked against the office's own site between September 23, 2026 and October 2, 2026.
Sullivan County, New York, has about 80,000 residents (2024 Census Bureau estimate). The title to a parcel in Sullivan County is in the deed records of the County Clerk and its taxable value is set by the town assessor; what is built on it is a matter for the city or the county. This guide says who keeps each record and where the page for each office is.
This guide covers deeds, assessed values, evictions and court cases, records requests, directory links and common questions.
Related guides: Sullivan County public records, Sullivan County arrest records, Sullivan County warrants, Sullivan County inmate search, Sullivan County criminal records, New York arrest records and New York inmate search.
Deeds, Mortgages and Liens in Sullivan County
Who owns a parcel in Sullivan County and what it sold for are in the deed records of the County Clerk, with every lien or mortgage against the land.
SearchSystems opened and checked the County Clerk's page at sullivanny.gov/Departments/Clerk/LandRecords (page title: Land Records | Sullivan County NY), phone 845-807-0411, which answered when SearchSystems opened it on September 23, 2026.
Assessed Values and the Tax Roll in Sullivan County
The value each parcel in Sullivan County is taxed on is set locally, by the assessor of each city and town, not by the county.
The county property tax office's page SearchSystems verified is at sullivanny.gov/Departments/RealProperty (page title: Real Property Tax Services | Sullivan County NY), phone 845-807-0221, 100 North Street, PO Box 5012 Monticello, NY 12701, Monday - Friday 9:00 AM to 5:00 PM, which answered when SearchSystems opened it on September 23, 2026.
Evictions and Court Cases About Land in Sullivan County
An eviction is a court case in the city, town and village courts, and so is a foreclosure, a lien dispute or a quiet title suit, in the Sullivan County Supreme and County Courts; the court file is public unless sealed.
Asking a County Office for a Record
Under the Freedom of Information Law a county office must answer a request within 5 business days, at least with an acknowledgment and a date for the full answer, and it may charge copying at 25 cents a page.
More Official Property and Land Records Pages for Sullivan County
The SearchSystems directory, online since 1997, lists the official pages for Sullivan County and New York. These property pages from its Sullivan County listing were opened again on October 2, 2026 and each one still answers:
- 2025 Real Property Assessment Rolls (sullivanny.gov)
- Assessment Information (sullivanny.gov)
Frequently Asked Questions
Who records deeds in Sullivan County?
The County Clerk, at sullivanny.gov/Departments/Clerk/LandRecords, phone 845-807-0411. Deeds, mortgages and liens on land in Sullivan County are filed there.
Who sets the assessed value of a property in Sullivan County?
The assessor of each city and town.
Where are evictions from Sullivan County filed?
In the city, town and village courts. The file is public unless the court seals it.
How is property assessed in New York?
New York property is assessed by each city and town, not the county, except in Nassau and Tompkins counties and New York City.
Is this the official Sullivan County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.