Statewide Massachusetts data served by MassGIS via GeoServer.

This tiled cached map service contains Building Structures (2-D, from Ortho Imagery) hosted at MassGIS' ArcGIS Online account.

This dataset consists of 2-dimensional roof outlines ("roofprints") for all buildings larger than 150 square feet, as interpreted by a contractor (Rolta) for the whole area of the Commonwealth using color, 30 cm. DigitalGlobe ortho images obtained in 2011 and 2012, supplemented with LiDAR (Light Detection And Ranging) data collected from 2002 to 2011 for the eastern half of the state.

The roofprints as delivered were enhanced by MassGIS using Normalized Digital Surface Models (NDSMs) derived from the same LiDAR data. Other layers were used, including the Property Tax Parcels, to aid in review, especially where LiDAR data were not available.

MassGIS has updated the data using ortho imagery from 2019, 2021, and 2023. Some building structure features were obtained from municipal data.

This cached tile service was last updated on October 26, 2024.

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When using apps or web maps from MassGIS in ArcGIS Online, this map may be added as a basemap from the Basemap Gallery (based on the MassGIS Basemap with Parcels tile service).This general-reference map for the Commonwealth of Massachusetts uses MassGIS data and includes a topographic base featuring water bodies, rivers and streams, open space areas and hillshade; many "detailed features" including roads, points of interest, place names, and more; and 2D building structure outlines. The three "layers" in this map are also cached separately and may be added to maps individually as needed:Building Structures (2D)Standardized Assessor ParcelsDetailed FeaturesTopographic Base>> See a map legend and read more about this map. Published on August 20, 2020.

Land use for the following watersheds: Chilmark Pond - Upper & Lower, James Pond, Menemsha Pond, Squibnocket Pond, and Tisbury Great Pond.Land use is based on assessor's use code (the first code that joins from the M*_Assess table to the M*_TaxPar feature class). The use codes have been generalized based on the methodology used in earlier Mass Estuaries Reports (MEP). West Tisbury data is FY21, Chilmark data is FY20, Aquinnah data is FY19. These are the latest parcel datasets available from MassGIS data portal as of 4/2021.Existing building count is based on MassGIS Structures having a roof square footage > 400. Future potential building count was modeled using CommunityViz software based on the most recent parcel bounds (year varies by Town; range is FY19 to FY21), minimum parcel size & road setback per town zoning (as compiled by the MVC in 2008), and existing buildings (MassGIS roof area > 400sq ft). No areas were prohibited from future development. Post-modeling, the MVC eliminated future buildings that overlapped with current open space/conservation land (per MVC & Island Conservation Partnership 4/2021).Major watershed boundaries are those created through the MEP modeling process (SMAST & MVC 2014).

City of Brockton, MA GIS Viewer

Visit this website for an explanation of the parcel's assessing info: https://www.mass.gov/info-details/massgis-data-property-tax-parcels#attributes-Through a series of joins, spatial joins and select by location with various datasets, the following key attribute fields were populated in the Municipal Properties dataset.Open Space/Conservation Land Attributes are: OS_ID OS_ID is a unique ID for polygons in the open space/conservation land database, [Fee_Owner], [Level_Protection], OLI_1_INT. For an explanation of the coded values used in these fields, visit: https://www.mass.gov/info-details/massgis-data-protected-and-recreational-openspace#attributes-Zoning info for the parcel is contained within [ZONECODE], [MinLot_ac], and [SubStd_Sz]. Zonecode assigned to a parcel is based on the location of the center point of the parcel. The minimum lot size is per the Town's zoning bylaws. Parcel's smaller than the bylaws minimum lot size were assigned a 'yes' value in the Substandard Size attribute column.The attribute [vacant] was assigned a 'yes' value if the assessor's Building Value > $0.00 for the parcel OR the parcel contained one or more structures per the MassGIS structures dataset.The attribute [conserved] was assigned a 'yes' value if the parcel's center point coincided with a parcel in the Dukes County Open Space & Conservation Land dataset.The attribute [AbutPot] Abutter Potential is assigned a 'yes' value if any of the following attributes contain a 'yes' value: [AbutMuni], [AbutOS], or [AbutVacPrv].The attribute [Notes] were manually added by the GIS staff based on local knowledge.Attributes dealing with Abutters: [AbutMuni] indicates if the municipal owned parcel abuts other municipally owned parcels. 'Abuts' are any parcels that thouch (share a boundary) or are within 40ft of each other. [AbutOS] indicates if the municipal owned parcel abuts a parcel which is open space/conservation land. [AbutVacPrv] indicates if the municipal owned parcel abuts a parcel which is vacant residential land. "Vacant Residential Land" was identified by the assessor's Use Code = 1300 or 1310 for the parcel.Identifying Neighbors: All municipal parcels were buffered 40ft and dissolved together. Then that resulting multi-part dataset was 'exploded' so each distinct polygon was represented by a distinct record in the attribute table. Each polygon was assigned an ID number. This output is the "Municipal Property Clusters".Via a Spatial Join, the respective Cluster (aka group ID) was assigned to the respective municipal parcel. Similarly, by finding the (a) Vacant Residential properties and (b) Conservation Land properties that intersected with the Municipal Property Clusters, the Cluster/Group ID was assigned to the respective vacant residential properties and conservation land properties. A & B each have a distinct dataset which is included in this bundle of data.By having the Group ID in the Municipal Properties dataset and the Vacant Residential and Conservation Land datasets ...let's say a parcel has a Group ID = 3 --> then you can find the abutters by finding the other Municipal Parcels with a Group ID = 3 AND look in the Vacant Residential attribute table for Group ID = 3 AND look in the Conservation Land attribute table for Group ID = 3 --AND then you have tons of info at your fingertips regarding that municipally owned parcel and its abutting vacant properties.

MassGIS Level 3 Parcel Data: Data Fiscal Year: Aquinnah 2019, Chilmark 2020, Edgartown 2021, Gosnold 2015, Oak Bluffs 2021, Tisbury 2021, West Tisbury 2021.Building Info Table: Acquired by MVC from Town Assessors in FY20.Downloaded from MassGIS,, this polygon file represents the parcel bounds for the 7 towns in Dukes County MA (Aquinnah, Chilmark, Edgartown, Godnold, Oak Bluffs, Tisbury, West Tisbury). Each town has their own parcel data consultant and then the data are forwarded to MassGIS for final processing. All data comply with the MassGIS Level 3 Parcel Data Standard. This file geodatabase only includes the TaxPar feature class and Assess table for each town. All TaxPar feature classes were appended into one feature class (Parcels_duk) by the MVC.Each assess table is utilized in that town's respective relationship join (1 to Many) for linking the parcel polygon to the related record(s) in the Assess table. The Assess Table contains info about ownership and assessed values. This is not a detailed building table. If there are multiple owners associated with a property, then the Assess table will have multiple records for that property/parcel (such as for condo parcels).Each building table is utilized in that town's respective relationship join (1 to Many) for linking the parcel polygon to the related record(s) in the Bldg table. The Bldg (building) table contains info about each building on the parcel (such as number of bedrooms, number of bathrooms, the living area square footage, etc.). NOTES of CAUTION: The Living Area Square Footage may not represent the exact same thing in each town. As a generalization, Living Area is interior space that is heated. Regarding West Tisbury, their building table only contains info for one building on the parcel. It is uncertain at this time if the info is the most recent, most primary, or some kind of summarization where multiple buildings on a parcel exist.The field of [assess_mYB] represents the Minimum/Earliest Year Built for any building on the parcel and is appended to the TaxPar feature class based on an analysis of the info provided in the building table. This field [assess_mYB] is utilized in the Historic Structures App found in ArcGIS OnLine.

Polygon feature class representing building footprints in Worcester, MA. Original features digitized from 1998 orthoimagery project and updated from 2003 imagery. Further updates from City of Worcester information.Informing Worcester is the City of Worcester's open data portal where interested parties can obtain public information at no cost.

This dataset consists of 2-dimensional roof outlines ("roofprints") for all buildings larger than 150 square feet, as interpreted by a contractor (Rolta) for the whole area of the Commonwealth using DigitalGlobe ortho images obtained in 2011 and 2012, supplemented with LiDAR (Light Detection And Ranging) data collected from 2002 to 2011 for the eastern half of the state. The roofprints as delivered were enhanced by MassGIS using Normalized Digital Surface Models (NDSMs) derived from the same LiDAR data. Other layers were used, including the Level 3 Parcels, to aid in review, especially where LiDAR data were not available.This feature class is being updated using ortho imagery captured in 2013, 2014 and 2015. The newer imagery allows MassGIS staff to remove, modify and add structures to keep up with more current ground conditions. Structures from the original compilation that are removed are stored in an "archive" feature class for edit tracking and historical purposes.Last updated on 5/22/2017.In ArcSDE the layer is named STRUCTURES_POLY.

This is a seamless bare earth digital elevation model (DEM) created from lidar terrain elevation data for the Commonwealth of Massachusetts. It represents the elevation of the surface with vegetation and structures removed. The spatial resolution of the map is 1 meter. The elevation of each 1-meter square cell was linearly interpolated from classified lidar-derived point data.This version of the DEM stores the elevation values as integers. The native VALUE field represents the elevation above/below sea level in meters. MassGIS added a FEET field to the VAT (value attribute table) to store the elevation in feet as calculated by multiplying VALUE x 3.28084.Dates of lidar data used in this DEM range from 2010-2015. The overlapping lidar projects were adjusted to the same projection and datum and then mosaicked, with the most recent data replacing any older data. Several very small gaps between the project areas were patched with older lidar data where necessary or with models from recent aerial photo acquisitions. See https://www.mass.gov/doc/lidar-project-areas-original/download for an index map.This DEM is referenced to the WGS_1984_Web_Mercator_Auxiliary_Sphere spatial reference.See the MassGIS datalayer page to download the data as a file geodatabase raster dataset.View this service in the Massachusetts Elevation Finder.

As of June 2019, these are the most current building roofprints for structures in Dukes County, MA. These roofprints were delineated from aerial photos by MassGIS and their subcontractor. The roofprints are not equivalent to footprints. See MassGIS for full methodolgy details. Roofprints can represent any structure (i.e. house, guest house, business, barn, shed, garage, etc). The MVC has also provided building centriods (produced from the roofprint polygon). All centroids were forced to be located within the roofprint polygon.The MVC also appended some assessor's data (or deduced some info from the assessor's data) for each roofprint centroid. The field of [Status] indicates if a parcel is owned by a Year-round ("YR") or Seasonal ("S") person. This deduction was made based on the owner's mailing address zip code. Off-island zip codes were assigned "S" seasonal and on-Island zip codes were assigned "YR" year-round. The field of [UseType] was deduced from the assessor's use code. "NR" - non residential; "R" - residential

This public map service contains points and polygons representing information from the Massachusetts Cultural Resource Information System (MACRIS) database and related records on file at the Massachusetts Historical Commission (MHC), including the Inventory of Historic Assets of the Commonwealth, National Register of Historic Places nomination forms, local historic district study reports, local landmark reports, and other materials. The MACRIS database and the layers within the MACRIS Maps web application are updated regularly as new information is submitted and added, and as the accuracy of earlier versions of the datalayer is improved. Three datalayers are being made available to the public: The Inventory Points layer contains the locations of buildings, burial grounds, structures, and objects (e.g. statues, monuments, walls). The points layer is symbolized to indicate the most common historic designation types: 1) National Register of Historic Places, 2) local historic district, 3) both National Register and local historic district, 4) Preservation Restriction, 5) Massachusetts Historic Landmark (MA/HL) and 6) inventoried but not designated with one of the previous designations. Less common designations are not symbolized in MACRIS, but are included in the Designations attribute field.The Inventory Areas polygon layer includes areas and districts symbolized in MACRIS in a similar manner to Inventory Points. Another polygon layer, Towns, possesses a binary “y” or blank field to indicate whether a town has a survey pending digitization. Please note that new and updated information is added to MHC files daily, and that there may be considerable lag time before this information is reflected in MACRIS or in MACRIS Maps. Map information for “completed” towns may not reflect the most current information on file with MHC. For additional information, users may consult the source records, forms and maps that make up the official Inventory of Historic and Archaeological Assets of the Commonwealth, on file at the MHC, Massachusetts Archives Building, 220 Morrissey Boulevard, Boston, during weekday business hours. No appointment is needed. For directions, see https://www.sec.state.ma.us/mhc/.See the metadata for more details.

This layer contains point features of all Commercial parking lots in the City of Cambridge. These include private and municipal lots and garages and their addresses. Explore all our data on the Cambridge GIS Data Dictionary.Attributes NameType DetailsDescription Id type: Integerwidth: 4precision: 10 Unused ID

DESCRIPTIO type: Stringwidth: 254precision: 0 Description of parking facility

ML type: Stringwidth: 254precision: 0 Assessor Block and Lot

ADDRESS type: Stringwidth: 254precision: 0 Address of facility

ACCESSVIA type: Stringwidth: 254precision: 0 Street where lot is accessible

STRUCTURE type: Stringwidth: 254precision: 0 Type of structure or lot

OWNTYPE type: Stringwidth: 254precision: 0 Owner type (private, municipal, ect.)

TOTALSP type: Doublewidth: 8precision: 19 Total number of spaces

COMMSPAC type: Integerwidth: 4precision: 10 Commercial spaces

City of Cambridge, MA, GIS basemap development project encompasses the land area of City of Cambridge with a 200-foot fringe surrounding the area and Charles River shoreline towards Boston. The basemap data was developed at 1" = 40' mapping scale using digital photogrammetric techniques. Planimetric features; both man-made and natural features like vegetation, rivers have been depicted. These features are important to all GIS/mapping applications and publication. A set of data layers such as Buildings, Roads, Rivers, Utility structures, 1 ft interval contours are developed and represented in the geodatabase. The features are labeled and coded in order to represent specific feature class for thematic representation and topology between the features is maintained for an accurate representation at the 1:40 mapping scale for both publication and analysis. The basemap data has been developed using procedures designed to produce data to the National Standard for Spatial Data Accuracy (NSSDA) and is intended for use at 1" = 40 ' mapping scale. Where applicable, the vertical datum is NAVD1988.Explore all our data on the Cambridge GIS Data Dictionary.Attributes NameType DetailsDescription Comment type: Stringwidth: 50precision: 0 No comments are populated

EditDate type: Stringwidth: 4precision: 0

The four adjacent Outer Cape communities of Eastham, Truro, Provincetown, and Wellfleet have built an intermunicipal partnership to pursue a regional approach to shoreline management. This partnership promotes short- and long-term science-based decisions that will maximize the effectiveness and efficiency of community responses to the increased threat of coastal hazards. This layer is a product of that partnership, the Intermunicipal Shoreline Management Project, a project first initiated in 2019 with funding from CZM's Coastal Resilience Grant Program.The Wetlands Protection Act 310 CMR 10.30 states when a coastal bank is determined to be significant to storm damage prevention or flood control because it supplies sediment to coastal beaches, dunes or barrier beaches then no new bulkhead, revetment, seawall, groin or other coastal engineering structure is permitted. An exception applies when the coastal engineering structure is required to prevent storm damage to buildings constructed before the effective date of August 10, 1978. This dataset shows the parcel location of buildings built before 1978 with no existing coastal engineering structure. Parcel features were extracted from MassGIS Data: Standardized Assessors' Parcels (2019). Digital parcel standard level 3 products were used for M086, M242, M300 and M318.Last update: 5/13/2024

This view layer references the authoritative Chelsea Structures dataset which consists of 2-dimensional roof outlines ("roofprints") for all buildings larger than 150 square feet, as interpreted by a contractor (Rolta) for the whole area of the Commonwealth using DigitalGlobe ortho images obtained in 2011 and 2012, supplemented with LiDAR (Light Detection And Ranging) data collected from 2002 to 2011 for the eastern half of the state. The roofprints as delivered were enhanced by MassGIS using Normalized Digital Surface Models (NDSMs) derived from the same LiDAR data. Other layers were used, including the Level 3 Parcels, to aid in review, especially where LiDAR data were not available.This feature class is being updated using ortho imagery captured in 2013, 2014, 2015 and 2016. Last updated on 10/2/2017. Shapefile downloaded from MassGIS on 7/16/2019 by CGIS Mapping, LLC. Imported 6 updated building polygons as requested by the City of Chelsea, 7/16/2019.

City of Cambridge, MA GIS basemap development project encompasses the land area of City of Cambridge with a 200 foot fringe surrounding the area and Charles River shoreline towards Boston. The basemap data was developed at 1" = 40' mapping scale using digital photogrammetric techniques. Planimetric features; both man-made and natural features like vegetation, rivers have been depicted. These features are important to all GIS/mapping applications and publication. A set of data layers such as Buildings, Roads, Rivers, Utility structures, 1 ft interval contours are developed and represented in the geodatabase. The features are labeled and coded in order to represent specific feature class for thematic representation and topology between the features is maintained for an accurate representation at the 1:40 mapping scale for both publication and analysis. The basemap data has been developed using procedures designed to produce data to the National Standard for Spatial Data Accuracy (NSSDA) and is intended for use at 1" = 40 ' mapping scale. Explore all our data on the Cambridge GIS Data Dictionary.

      Attributes




          Name

            Type Details

            Description


          WTLND_ID
          type: Integerwidth:
            4precision: 10
          Corresponds with 2002
            Wetlands Mapping and Inventory report


          WTSYSTEM
          type: Stringwidth:
            254precision: 0
          Type of wetland system


          WTSUBSYSTE
          type: Stringwidth:
            254precision: 0
          Type of wetland subtype


          WTDESCRIPT
          type: Stringwidth:
            254precision: 0
          Wetland description


          DATASOURCE
          type: Stringwidth:
            254precision: 0
          Source for GIS data


          NAMELOCATI
          type: Stringwidth:
            254precision: 0
          Name or location of wetland



          COMPLANTS1
          type: Stringwidth:
            254precision: 0
          Names of commonly found
            plants in wetland area


          COMPLANTS2
          type: Stringwidth:
            254precision: 0
          Names of commonly found
            plants in wetland area

This dataset consists of 2-dimensional outlines of all buildings and structures within the Town of Dedham, Massachusetts. This information was originally compiled from 1998 and 2004 orthoimagery sources. Updated features have been derived from roof outlines collected by MassGIS using 2011 orthoimagery and LiDAR and updated with 2013 aerial imagery, scanned plans from the Town of Dedham Building Department, and a planimetric collection from the City of Boston. View Full Metadata

Parcel data analyzed are: Aquinnah FY24, Chilmark, FY24, Edgartown FY25, Oak Bluffs FY24, Tisbury FY24, and West Tisbury FY23.Visit this website for an explanation of the parcel's assessing info: https://www.mass.gov/info-details/massgis-data-property-tax-parcels#attributes-Through a series of joins, spatial joins and select by location with various datasets, the following key attribute fields were populated in the Municipal Properties dataset.Open Space/Conservation Land Attributes are: OS_ID OS_ID is a unique ID for polygons in the open space/conservation land database, [Fee_Owner], [Level_Protection], OLI_1_INT. For an explanation of the coded values used in these fields, visit: https://www.mass.gov/info-details/massgis-data-protected-and-recreational-openspace#attributes-Zoning info for the parcel is contained within [ZONECODE], [MinLot_ac], and [SubStd_Sz]. Zonecode assigned to a parcel is based on the location of the center point of the parcel. The minimum lot size is per the Town's zoning bylaws. Parcel's smaller than the bylaws minimum lot size were assigned a 'yes' value in the Substandard Size attribute column.The attribute [vacant] was assigned a 'no' value if the assessor's Building Value > $0.00 for the parcel OR the parcel contained one or more structures per the MassGIS structures dataset.The attribute [conserved] was assigned a 'yes' value if the parcel's center point coincided with a parcel in the Dukes County Open Space & Conservation Land dataset.The attribute [AbutPot] Abutter Potential is assigned a 'yes' value if any of the following attributes contain a 'yes' value: [AbutMuni], [AbutOS], or [AbutVacPrv].The attribute [Notes] were manually added by the GIS staff based on local knowledge.Attributes dealing with Abutters: [AbutMuni] indicates if the municipal owned parcel abuts other municipally owned parcels. 'Abuts' are any parcels that thouch (share a boundary) or are within 40ft of each other (this accounts for parcels separated by 'paper streets'). [AbutOS] indicates if the municipal owned parcel abuts a parcel which is open space/conservation land. [AbutVacPrv] indicates if the municipal owned parcel abuts a parcel which is vacant residential land. "Vacant Residential Land" was identified by the assessor's Use Code = 1300 or 1310 for the parcel.Identifying Neighbors: All municipal parcels were buffered 40ft and dissolved together. Then that resulting multi-part dataset was 'exploded' so each distinct polygon was represented by a distinct record in the attribute table. Each polygon was assigned an ID number. This output is the "Municipal Property Clusters".Via a Spatial Join, the respective Cluster (aka group ID) was assigned to the respective municipal parcel. Similarly, by finding the (a) Vacant Residential properties and (b) Conservation Land properties that intersected with the Municipal Property Clusters, the Cluster/Group ID was assigned to the respective vacant residential properties and conservation land properties. A & B each have a distinct dataset which is included in this bundle of data.By having the Group ID in the Municipal Properties dataset and the Vacant Residential and Conservation Land datasets ...let's say a parcel has a Group ID = 3 --> then you can find the abutters by finding the other Municipal Parcels with a Group ID = 3 AND look in the Vacant Residential attribute table for Group ID = 3 AND look in the Conservation Land attribute table for Group ID = 3 --AND then you have tons of info at your fingertips regarding that municipally owned parcel and its abutting vacant properties.

As of June 2021, these are the most current building roofprints for structures in Dukes County, MA. These roofprints were delineated from aerial photos by MassGIS and their subcontractor. The roofprints are not equivalent to footprints. See MassGIS for full methodolgy details. To filter these data by Town_ID: 62 = Chilmark, 89 = Edgartown, 104 = Aquinnah, 109 = Gosnold, 221 = Oak Bluffs, 296 = Tisbury, 327 = West Tisbury.See the full metadata for the roofprint points to learn which year of Assessing data was used for the appended attribute generalizations.Roofprints can represent any structure (i.e. house, guest house, business, barn, shed, garage, etc). The MVC has also provided building centriods (produced from the roofprint polygon). All centroids were forced to be located within the roofprint polygon.The MVC also appended some assessor's data (or deduced some info from the assessor's data) for each roofprint centroid. The respective parcel's LOC_ID, Map_Par_ID, and Poly_Type, was appended to the attribute table based on the parcel that the centroid intersected.The other appended attributes were based on the info in the Assess Table (present within the town's parcel file geodatabase). The assess tables were summarized based on Loc_ID (a unique value for each parcel). If multiple Assess records have the same Loc_ID, the MinYrBlt & MaxYrBlt (Minimum Year Built and Maximum Year Built) across all the assess records for that parcel were appended to all structure points on that parcel. While these data may represent a range of construction dates, it may not encapsulate the full range.Why? ...here we go --> The Assess Table is a record for each owner on a parcel. Hence, a parcel with a condo will have multiple records (having the same LOC_ID) within the Assess Table. However, a parcel with multiple buildings but only one owner, will only have one record in the Assess Table. So, in the latter scenario, which Year Built date goes to which building? - the answer is 'I don't know'. That answer requires more in-depth research with the town Assessor &/or building inspector &/or Registry of Deeds.The following info is based on the 'first' record within the assess table for the respective Loc_ID/parcel.The field of [Status] indicates if a parcel is owned by a Year-round ("YR") or Seasonal ("S") person. This deduction was made based on the owner's mailing address zip code. Off-island zip codes were assigned "S" seasonal and on-Island zip codes were assigned "YR" year-round. The field of [UseType] was deduced from the assessor's use code. "NR" - non residential; "R" - residential.