Public Auctions and Bidder Information
Property becomes tax-defaulted land if property taxes remain unpaid at 12:01 a.m. on July 1st. Property that is tax-defaulted after five years (or three years in the case of property also subject to a nuisance abatement lien) becomes subject to the county tax collector’s power to sell that property in order to satisfy the defaulted property taxes. The county tax collector must attempt to sell the property within four years of becoming subject to sale.
https://sco.ca.gov/ardtax_public_auction.html
Questions? Contact the Tax Programs Unit at propertytax@sco.ca.gov