The dataset has combined the Parcels and Computer-Assisted Mass Appraisal (CAMA) data for 2023 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. Pursuant to Section 7-100l of the Connecticut General Statutes, each municipality is required to transmit a digital parcel file and an accompanying assessor’s database file (known as a CAMA report), to its respective regional council of governments (COG) by May 1 annually.

These data were gathered from the CT municipalities by the COGs and then submitted to CT OPM. This dataset was created on 12/08/2023 from data collected in 2022-2023. Data was processed using Python scripts and ArcGIS Pro, ensuring standardization and integration of the data.

CAMA Notes:

The CAMA underwent several steps to standardize and consolidate the information. Python scripts were used to concatenate fields and create a unique identifier for each entry. The resulting dataset contains 1,353,595 entries and information on property assessments and other relevant attributes.

CAMA was provided by the towns.

Canaan parcels are viewable, but no additional information is available since no CAMA data was submitted.

Spatial Data Notes:

Data processing involved merging the parcels from different municipalities using ArcGIS Pro and Python. The resulting dataset contains 1,247,506 parcels.

No alteration has been made to the spatial geometry of the data.

Fields that are associated with CAMA data were provided by towns.

The data fields that have information from the CAMA were sourced from the towns’ CAMA data.

If no field for the parcels was provided for linking back to the CAMA by the town a new field within the original data was selected if it had a match rate above 50%, that joined back to the CAMA.

Linking fields were renamed to "Link".

All linking fields had a census town code added to the beginning of the value to create a unique identifier per town.

Any field that was not town name, Location, Editor, Edit Date, or a field associated back to the CAMA, was not used in the creation of this Dataset.

Only the fields related to town name, location, editor, edit date, and link fields associated with the towns’ CAMA were included in the creation of this dataset. Any other field provided in the original data was deleted or not used.

Field names for town (Muni, Municipality) were renamed to "Town Name".

The attributes included in the data:

• Town Name

• Owner

• Co-Owner

• Link

• Editor

• Edit Date

• Collection year – year the parcels were submitted

• Location

• Mailing Address

• Mailing City

• Mailing State

• Assessed Total

• Assessed Land

• Assessed Building

• Pre-Year Assessed Total

• Appraised Land

• Appraised Building

• Appraised Outbuilding

• Condition

• Model

• Valuation

• Zone

• Zone Description

• State Use

• State Use Description

• Living Area

• Effective Area

• Total rooms

• Number of bedrooms

• Number of Baths

• Number of Half-Baths

• Sale Price

• Sale Date

• Qualified

• Occupancy

• Prior Sale Price

• Prior Sale Date

• Prior Book and Page

• Planning Region

*Please note that not all parcels have a link to a CAMA entry.

Additional information about the specifics of data availability and compliance will be coming soon.