About this view:
This hosted feature view represents a filtered subset of the statewide parcel and CAMA dataset described below. The subset was produced by executing a text\u2011based query on the State Use and State Use Description attributes of the authoritative parcel layer. The query identifies parcels where the fields contains includes text strings associated with vacancy in a parcel. Data may be missing for certain municipalities (see Ownership Suppression below).
Vacant Parcels Query:
The GISO has identified minimal false positives in this query. Reach out at opm.giso@ct.gov with any feedback.
About the source:
Pursuant to Section 7-100l of the Connecticut General Statutes, each municipality is required to transmit a digital parcel file and an accompanying assessor\u2019s database file (known as a CAMA report), to its respective regional council of governments (COG) by May 1 annually. The dataset has combined the Parcels and Computer-Assisted Mass Appraisal (CAMA) data for 2025 into a single dataset. This dataset is designed to make it easier for stakeholders and the GIS community to use and access the information as a geospatial dataset. Included in this dataset are geometries for all 169 municipalities and attribution from the CAMA data for all but one municipality. These data were gathered from the CT municipalities by the COGs and then submitted to CT OPM. This dataset was created on September 2025 from data collected in 2024-2025. Data was processed using Python scripts and ArcGIS Pro for standardization and integration of the data. To learn more about Parcel and CAMA in CT visit our Parcels Page in the Geodata Portal.
Coordinate system:
This dataset is provided in NAD 83 Connecticut State Plane (2011) (EPSG 6434) projection. Prior versions were provided at WGS 1984 Web Mercator Auxiliary Sphere (EPSG 3857).
Ownership Suppression:
The updated datase", "distribution": [{"@type": "dcat:Distribution", "downloadURL": "https://geodata.ct.gov/api/download/v1/items/1e733783ba524d26b540961257bb0bcb/csv?layers=0", "mediaType": "text/csv", "title": "CSV"}, {"@type": "dcat:Distribution", "downloadURL": "https://geodata.ct.gov/api/download/v1/items/1e733783ba524d26b540961257bb0bcb/geojson?layers=0", "mediaType": "application/vnd.geo+json", "title": "GeoJSON"}, {"@type": "dcat:Distribution", "downloadURL": "https://geodata.ct.gov/api/download/v1/items/1e733783ba524d26b540961257bb0bcb/kml?layers=0", "mediaType": "application/vnd.google-earth.kml+xml", "title": "KML"}, {"@type": "dcat:Distribution", "downloadURL": "https://geodata.ct.gov/api/download/v1/items/1e733783ba524d26b540961257bb0bcb/shapefile?layers=0", "mediaType": "application/zip", "title": "Shapefile"}, {"@type": "dcat:Distribution", "downloadURL": "https://geodata.ct.gov/datasets/ctmaps::connecticut-vacant-parcels", "mediaType": "text/html", "title": "ArcGIS Hub Dataset"}, {"@type": "dcat:Distribution", "downloadURL": "https://services3.arcgis.com/3FL1kr7L4LvwA2Kb/arcgis/rest/services/Connecticut_CAMA_and_Parcel_Layer_Vacant_Parcels/FeatureServer/0", "mediaType": "application/json", "title": "ArcGIS GeoService"}], "identifier": "https://www.arcgis.com/home/item.html?id=1e733783ba524d26b540961257bb0bcb&sublayer=0", "issued": "2026-06-11", "keyword": ["boundaries", "cadastre", "cama", "ct cama", "ct cama 2025", "ct gis", "ct gis office", "ct parcels", "ct parcels 2025", "gis", "parcel boundaries", "planning cadastre", "tax parcels"], "landingPage": "https://geodata.ct.gov/datasets/ctmaps::connecticut-vacant-parcels", "license": "https://creativecommons.org/publicdomain/zero/1.0", "modified": "2026-07-30", "publisher": {"@type": "org:Organization", "name": "State of Connecticut"}, "spatial": "-73.7260,40.9799,-71.7815,42.0486", "theme": ["geospatial"], "title": "Connecticut Vacant Parcels"}