When was the Base Parcel Canvas last updated?
The default version of the UrbanFootprint Base Parcel Canvas is updated quarterly, allowing us to incorporate the latest CoreLogic parcel source data release along with other new data and logic to improve its accuracy. We announce new updates to customers when they occur – the most recent update was made available January 14, 2022. You can find key information about the update in the Release Notes that follow. For more detailed information about how the canvas is created, see the Base Parcel Canvas Creation Methodology.
Please keep in mind that Base Canvas updates become available for new projects only. Existing projects built upon previous versions cannot be subsequently updated to use a new Base Canvas. To make use of the most recent version (and accompanying Parcel Reference Data layer), you'll need to create a new project.

Base Parcel Canvas Release Notes

January 2022

  • Updated building footprints data. An update to the underlying building footprints data (Microsoft Building Footprints) has increased the coverage of our dwelling unit data and irrigated land area calculations, and in some cases has improved our commercial land use typing.
  • Improved commercial land use typing. An update to the underlying point-of-interest data improves the typing of commercial land uses.
  • More accurate land use and employment information. An update to the underlying OpenStreetMap point and polygon data yields more accurate land use typing and employment information.
  • Bug Fix: Previously, calculated columns in the Parcel Reference Data layer such as Floor Area Ratio, Improvement to Land Value Ratio, Market Improvement to Land Value Ratio, and Assessed Improvement to Land Value Ratio erroneously reported a zero when inputs to the calculation were missing or not applicable. With this release, the calculated value will also be reported as not available in those cases.

September 2021

  • Addition of Oconee County, GA
  • Addition of download capabilities for Imperial County, CA and Cochise County, AZ
  • Updated parcel geometries and attribute data for hundreds of U.S. counties
  • Improved typing of commercial land use

July 2021

  • Expanded coverage. The Base Canvas for California has been expanded to cover an additional 15 counties for complete parcel coverage of the entire state. Parcel geometries and attribute coverage have also been updated for hundreds of counties across the U.S.
  • Improved commercial land use typing. An update to the underlying point-of-interest data improves the typing of commercial land uses.
  • More accurate land use and employment information. An update to the underlying OpenStreetMap point and polygon data yields more accurate land use typing and employment information.

April 2021

  • Updated point-of-interest data. Updated point-of-interest (POI) data from SafeGraph and OpenStreetMap, now current as of February 2021, improve the accuracy of commercial typing and employment information assigned to parcels.
  • Updated American Community Survey (ACS) data. The Base Canvas now uses ACS 2019 5-year estimates of population and households.
  • Updated parcel geometries and attributes. Parcel geometries have been updated for 183 counties. Parcel attributes have been updated for 1,023 counties.

January 2021

  • Updated employment data. By updating the underlying data source from the U.S. Census Bureau’s LODES 2017 to the newly released LODES 2018, the UrbanFootprint Base Canvas now provides you with the latest available census-based employment data, adding nearly 3.5 million jobs nationwide.
  • Updated parcel geometries and attributes. Parcel geometries have been updated for 132 counties. Parcel attributes have been updated for 1,022 counties.
  • More accurate typing of parks and multifamily parcels. The assignment of current land use to parcels with parks and multi-family residential buildings has been improved to result in fewer incorrectly assigned park or residential parcels.

October 2020

In addition to our regular update, this quarter’s release includes some exciting improvements:
  • More accurate typing of commercial parcels (based on newly integrated SafeGraph POI data), improving how commercial use is identified (including offices, retail sites, medical services) and how job categories are separated at the parcel level
  • Updated census metrics (based on the latest Census ACS 2018 dataset), improving how missing population or household rates are handled at the census tract level

May 2020

Source data

This update incorporates the following source data:
  • Parcel information. CoreLogic parcel data (Q1 2020)
  • Locations of interest. OpenStreetMaps (OSM) locations of interest (point and polygon) data (Feb 2020)
  • Employment. Census Longitudinal Employer-Household Dynamics (LEHD) Origin-Destination Employment Statistics (LODES) data (Latest release, 2017)

Logic updates

Vacant parcels have sometimes been typed incorrectly as commercial property. We’ve updated our logic to use building footprints to better understand where properties are unlikely to be used currently for commercial purposes. This change, along with some improvements to how we're using OSM data for locations of interest, means that you'll likely see some of the following differences:
  • Better identification of parks, golf courses, and open spaces
  • More ‘blank’ parcels, fewer inaccurate ‘commercial’ parcels. ‘Blank’ parcels occur when we don’t have data to reliably identify the current use for the parcel. In some cases, these parcels may have been subdivided in anticipation of future development. In other cases, we simply have conflicting information about the current land use. The OSM data helps us better identify uses.

Crowdsourcing

We're always looking to improve the accuracy of our Base Canvas. If you would like to help us make improvements for yourself and other users, please use this form to report incorrectly typed parcels: https://airtable.com/shr2RcLYGkrjSj0cL. Your input is appreciated!