Zillow Data Underpins PolicyMap’s New Home Sales Stats

Update (06/09/2021): PolicyMap now has home sale data from Moody’s Analytics. Read more here.

We’re adding some exciting new data to PolicyMap this fall. For the first time, PolicyMap will provide our own unique calculations of home sales and sales volume, amounts, and trends at a block group level and above.

The custom aggregations done by PolicyMap use the proprietary Zillow Transaction and Assessment Dataset (ZTRAX)*.  Aggregating Zillow’s ZTRAX parcel-level data has allowed us to apply our data expertise towards assembling better home sale data for our users. The new dataset will provide timely, accurate, and clear information about residential real estate markets across the U.S.

In November we will release single-family data for 2005 to the present, followed by additional indicators including multifamily and condominium unit data. This data will be accessible to all standard and premium subscribers, as well as all enterprise license users.

This new data will supplant our existing home sale data, which will no longer be available after November 1, 2018.

*More information on accessing the Zillow data can be found at http://www.zillow.com/ztrax. The results and opinions are those of the author(s) and do not reflect the position of Zillow Group.