Summary: A ballot measure headed for the 2020 ballot could bring $11 billion more in tax revenues by changing the way that commercial property is taxed. But county assessors said it would be a logistical nightmare to implement. The Chronicle's senior political writer Joe Garofoli explains how some politicians are ready to grab California's infamous third rail of politics -- Prop 13. Learn more about your ad choices. Visit megaphone.fm/adchoices
