To access parcel information:Enter an address or zoom in by using the +/- tools or your mouse scroll wheel. Parcels will draw when zoomed in.Click on a parcel to display a popup with information about that parcel.Click the "Basemap" button to display background aerial imagery.From the "Layers" button you can turn map features on and off.Complete Help (PDF)Parcel Legend:Full Map LegendAbout this ViewerThis viewer displays land property boundaries from assessor parcel maps across Massachusetts. Each parcel is linked to selected descriptive information from assessor databases. Data for all 351 cities and towns are the standardized "Level 3" tax parcels served by MassGIS. More details ...Read about and download parcel dataUpdatesV 1.1: Added 'Layers' tab. (2018)V 1.2: Reformatted popup to use HTML table for columns and made address larger. (Jan 2019)V 1.3: Added 'Download Parcel Data by City/Town' option to list of layers. This box is checked off by default but when activated a user can identify anywhere and download data for that entire city/town, except Boston. (March 14, 2019)V 1.4: Data for Boston is included in the "Level 3" standardized parcels layer. (August 10, 2020)V 1.4 MassGIS, EOTSS 2021

City of Boston 2014 parcels created by the Assessing Department. To add ownership information please join the Property Assessment CSV file in Analyze Boston with Parcels 2014 geospatial data using PID_LONG and GIS_ID fields.

The Department of Neighborhood Development (DND) takes care of city owned property, including the maintanence of buildings and vacant land. This is a legacy dataset that provides information on these properties including the size, location, potential use, and more.

Please see the current visualization of this data, provided by the Department of Neighborhood Development, for the most up to date information. Available @ http://property.boston.gov

The Department of Neighborhood Development (DND) takes care of city owned property, including the maintanence of buildings and vacant land. This is a legacy dataset that provides information on these properties including the size, location, potential use, and more.

Please see the current visualization of this data, provided by the Department of Neighborhood Development, for the most up to date information. Available @ http://property.boston.gov

City of Boston 2021 parcels created by the Assessing Department. To add ownership information please join the Property Assessment CSV file in Analyze Boston with Parcels 2021 geospatial data using PID_LONG and GIS_ID fields.

The Department of Neighborhood Development (DND) takes care of city owned property, including the maintanence of buildings and vacant land on foreclosed or abondened property that is suitable for development. This is a legacy dataset that provides information on the size, location, and more on this category of property.

Please see the current visualization of this data, provided by the Department of Neighborhood Development, for the most up to date information. Available @ http://property.boston.gov

MassGIS is working very closely with the State 911 Department in the state’s Executive Office of Public Safety and Security on the Next Generation 911 Emergency Call System. MassGIS developed and is maintaining the map and address information that are at the heart of this new system. Statewide deployment of this new 9-1-1 call routing system was completed in 2018.Address sources include the Voter Registration List from the Secretary of the Commonwealth, site addresses from municipal departments (primarily assessors), and customer address lists from utilities. Addresses from utilities were “anonymized” to protect customer privacy. The MAD was also validated for completeness using the Emergency Service List (a list of telephone land line addresses) from Verizon.The MAD contains both tabular and spatial data, with addresses being mapped as point features. At present, the MAD contains 3.2 million address records and 2.2 million address points. As the database is very dynamic with changes being made daily, the data available for download will be refreshed weekly.A Statewide Addressing Standard for Municipalities is another useful asset that has been created as part of this ongoing project. It is a best practices guide for the creation and storage of addresses for Massachusetts Municipalities.Points features with each point having an address to the building/floor/unit level, when that information is available. Where more than one address is located at a single location multiple points are included (i.e. "stacked points"). The points for the most part represent building centroids. Other points are located as assessor parcel centroids.Points will display at scales 1:75,000 and closer.MassGIS' service does not contain points for Boston; they may be accessed at https://data.boston.gov/dataset/live-street-address-management-sam-addresses/resource/873a7659-68b6-4ac0-98b7-6d8af762b6f1.More details about the MAD and Master Address Points.Map service also available.