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Publication Date: March 2022
This file only contains 2021 parcel data for NYS State-owned tax parcels.
Parcel geometry was incorporated as received from County Real Property Departments. No attempt was made to edge-match parcels along adjacent counties. County attribute values were populated using 2021 Assessment Roll tabular data the NYS GIS Program Office (GPO) obtained from the NYS Department of Tax and Finance’s Office of Real Property Tax Services (ORPTS). Three counties have older data vintages: 2018 (Monroe), 2019 (Westchester), 2020 (Rockland), all with 2020 Assessment attributes, and will be updated when newer data can be obtained from the counties. Tabular assessment data was joined to the county provided parcel geometry using the SWIS & SBL or SWIS & PRINT KEY unique identifier for each parcel. Detailed information about assessment attributes can be found in the ORPTS Assessor’s Manuals available here: https://www.tax.ny.gov/research/property/assess/manuals/assersmanual.htm. New York City data comes from NYC MapPluto (https://www1.nyc.gov/site/planning/data-maps/open-data/dwn-pluto-mappluto.page).
The State-owned tax parcel polygons in this file are the result of a best effort selection based on the Primary Owner and Additional Owner fields in the NYS Statewide Tax Parcels file, GPO data, State agency data, and online research. These same data and information are also the basis for a best effort assignment of a NYS agency name (listed in the NYS Name field) to most tax parcel polygons where the Owner Type field value is State. The NYS Name Source field consists of a code that describes how the State-owned designation and agency name were determined, if this was verified, and the means of verification, if applicable. See the "Fields" section below for a complete description.
The Adirondack Park boundary is described in New York State Environmental Conservation Law Section 9-0101. This line layer was digitized by NYS Adirondack Park Agency staff from 2013 and 2014 county real property tax parcel data. Although county tax maps are not a survey quality boundary reference, they do provide the best available information covering the complete park boundary. Typical tax map scales used for digitizing ranged from one inch equals 100 feet to one inch equals 400 feet. Line attributes include the basis of the line segment such as a Great Lot Line original survey, a municipal boundary, or water feature. Each segment also lists the text description from state law.