What does "standardized parcel mapping" mean?

Standardized parcel mapping refers to creating versions of each community’s assessor mapping that comply with the . In January 2011, MassGIS started a project to produce this standardized mapping in each community (except Boston).  That project was completed in the summer of 2013.   Standardization includes requirements for the quality of representing parcel boundaries, for the content of a standard extract from the assessing database, and for the percentage of assessing records that link to a property parcel and vice-versa.   All the primary assessing (CAMA) software vendors with customers in Massachusetts have developed a “MassGIS Extract” based on the standard.  The standardized data are available from the MassGIS web site.

What are the advantages of using and maintaining standardized parcel mapping?

  1. The MAAO endorses the MassGIS Standard as a best practice.
  2. In many communities the standardized data provides better quality mapping
  3. It ensures a very high match rate between maps and assessing data and vice versa
  4. It provides seamless integration with parcel data from adjacent communities, whether for supporting emergency response, complete abutter notifications, planning, or development review.
  5. It enables communities to use the standard as a specification for a map maintenance consultant
  6. It lowers software application costs because consultants don’t have to modify their application for your parcel data structure
  7. It enables tight integration between parcel data and other land records (for example, permit records and registry records)
  8. It enables much better address matching (mapping addresses as point locations)
  9. It enables state or regional level on-line viewing of parcel data
  10. It is consistent with the Department of Revenue’s current assessor recertification guidelines which promotes using the MassGIS standard for tax maps used in a GIS.

Who Supports Standardized Parcel Mapping?

Standardization is supported by all the main parcel map maintenance and GIS consultants working in Massachusetts (Tighe and Bond, James W. Sewall Company, Polaris Consulting, PeopleGIS, MainStreet GIS, CGIS Mapping, CDM Smith, Cartographic Associates (now CAI Technologies), and Applied Geographics), by all of the main computer assisted mass appraisal (CAMA) software vendors (CSC, Patriot, PK-Systems, Vision, Tyler Technologies), and by all of the regional planning agencies that provide parcel map maintenance services.

Last Updated 10/10/2014