Hello Sal. The base property tax rate in CA is 1% of the purchase price and then the property gets reassed every year and the property tax adjusts accordingly, but the increases are not really significant. In addition to the base property tax, you may also have to pay special assessment that can vary greatly from location to location. One of the most significant special assessments is the Mello Roos. You should be able to access the tax bill at the county tax collector's office. While the property tax that's shown in the most recent tax bill will be based on the old assessed value, not the new purchase price, you'll be able to see what kind of special assessment you'll have to expect. This should have been disclosed to you during the transaction. Usually, the tax and special tax information is contained in the NHD report (Natural Hazard Disclosure Report) that you should have been provided by the seller. While property taxes don't really have anything to do with natural hazards, the information is usually included in that report. I hope this helps.