NPDPChangeDetection now Offers Six Years of Change: 2010 – 2015
Since 2010, the National ParcelMap Data Portal (NPDP) database has almost tripled from 700 to near 1,900 counties (65M-115M parcels). Along the way, BSI has compiled NPDPChangeDetection, a multiyear archival of all content in the NPDP database on or about May 1 2010, 2011, 2012, 2013, 2014. 2015, 2016 and 2017. The NPDP Change Detection Coverage Table shown below indicates the year each county in the NPDP was first attained ‘ATTAINED” with The number on the right referring to the number of times the version date changed during the seven year period from 2010-17. All national NPDP subscriptions come with 4 archival NPDP layers at no extra charge. In addition, NPDPChangeDetection reports are available to all as follows. First download the NPDP Change Detection Coverage Table to determine whether there is enough coverage since 2010 to satisfy your needs. Then follow the instructions to submit a request. In return, you will receive digital parcel mapping for one mile around the subject parcel in subject county for each available YEAR requested.