Property tax rate here in CA is roughly 1.25%. Purchase price is the base value, maximum tax increases are 2% per year on the base. The property is reassessed on a sale. During the recession, many people had their properties reassessed to reflect the reduced (below purchase price) value. Once those values rose, the assessor reassessed up to the old base, then it's back to a 2% per year increase.
Nothing dropped in value by 75% in the recession, especially anything along the coast. These numbers don't make any sense at all.
Btw, I own 4 California timeshares, all bought resale in 2011 (i.e. zero value purchase prices). All were taxed at a minimum value ($3000 - $4000). None have gone up 75% (although Seapointe rolls their tax into the maintenance fees so I am not sure about that one (but my maintenance fees haven't increased by $200 in any single year). All of my property tax bills are about $40 - $50 per year. Also, property tax bills are sent in the fall - Oct/Nov timeframe.