Property Assessment
Assessing Department
Updated May 22, 2026
Update frequency: Annual
About this dataset
Gives property, or parcel, ownership together with value information, which ensures fair assessment of Boston taxable and non-taxable property of all types and classifications. To preserve their integrity, the identifiers PID, CM_ID, GIS_ID, ZIPCODE, and MAIL_ZIPCODE all are marked with an underscore ("_") as the last character.
Year-specific documentation for the FY2008 through FY2013 files is not currently available, but the format of those files is equivalent to that described in the FY2014 documentation.
Data and resources (39)
- PDF
Property Occupancy Codes
Occupancy codes (applies to all years)
54 KBModified Apr 23, 2021PDF preview available
- CSV
Property Assessment FY2026
76 MBModified May 22, 2026Table and Data API available
- PDF
Property Assessment FY2026 Data Key
166 KBModified Dec 26, 2025PDF preview available
- CSV
Property Assessment FY2025
76 MBModified Dec 30, 2024Table and Data API available
- PDF
Property Assessment FY2025 Data Key
166 KBModified Dec 30, 2024PDF preview available
- CSV
Property Assessment FY2024
75 MBModified Jan 9, 2024Table and Data API available
- PDF
Property Assessment FY2024 Data Key
166 KBModified Jan 9, 2024PDF preview available
- CSV
Property Assessment FY2023
72 MBModified Jan 31, 2023Table and Data API available
- PDF
Property Assessment FY2023 Data Key
165 KBModified Jan 31, 2023PDF preview available
- CSV
Property Assessment FY2022
75 MBModified May 6, 2022Table and Data API available
- PDF
Property Assessment FY2022 Data Key
162 KBModified May 6, 2022PDF preview available
- CSV
Property Assessment FY2021
73 MBModified Apr 23, 2021Table and Data API available
- CSV
Property Assessment FY2020
56 MBModified Apr 14, 2021Table and Data API available
- CSV
Property Assessment FY2019
38 MBModified Mar 14, 2019Table and Data API available
- PDF
Property Assessment FY2019 Data Key
66 KBModified Mar 19, 2019PDF preview available
- CSV
Property Assessment FY2018
Modified Feb 23, 2018Table and Data API available
- PDF
Property Assessment FY2018 data key
Key for fields
Modified Feb 23, 2018PDF preview available
- CSV
Property Assessment FY2017
Modified Apr 5, 2017Table and Data API available
- PDF
Property Assessment FY2017 data key
Key for fields
Modified Mar 27, 2017PDF preview available
- CSV
Property assessment FY2016
Modified Apr 5, 2017Table and Data API available
- PDF
Property Assessment FY2016 data key
Key for fields and codes for property occupancy
Modified Mar 23, 2017PDF preview available
- CSV
Property Assessment 2015
Modified Mar 30, 2017Table and Data API available
- PDF
Property Assessment FY2015 data key
Keys for fields.
Modified Apr 6, 2017PDF preview available
- CSV
Property Assessment 2014
Modified Mar 30, 2017Table and Data API available
- PDF
Property Assessment FY2014 data key
Key for the fields and codes for property occupancy.
Modified Apr 6, 2017PDF preview available
- CSV
Property Assessment FY2013
Modified Apr 6, 2018Table and Data API available
- CSV
Property Assessment FY2012
Modified Apr 6, 2018Table and Data API available
- CSV
Property Assessment FY2011
Modified Apr 6, 2018Table and Data API available
- CSV
Property Assessment FY2010
Modified Apr 6, 2018Table and Data API available
- CSV
Property Assessment FY2009
Modified Apr 6, 2018Table and Data API available
- CSV
Property Assessment FY2008
Modified Apr 6, 2018Table and Data API available
- CSV
Property Assessment FY2007
Modified Apr 6, 2018Table and Data API available
- PDF
Property Assessment FY2007 data key
Modified Apr 6, 2018PDF preview available
- CSV
Property Assessment FY2006
Modified Apr 6, 2018Table and Data API available
- DOC
Property Assessment FY2006 data key
Modified Apr 6, 2018
- CSV
Property Assessment FY2005
Modified Apr 6, 2018Table and Data API available
- DOC
Property Assessment FY2005 data key
Modified Apr 6, 2018
- CSV
Property Assessment FY2004
Modified Apr 6, 2018Table and Data API available
- DOC
Property Assessment FY2004 data key
Modified Apr 6, 2018