Buying a home in the Bay Area is one of life’s biggest milestones. You celebrate closing day, move in, and start building your future. But months later, an unexpected envelope may arrive in the mail. One that many buyers don’t even know to look for. That envelope contains supplemental property taxes , and if you’re not prepared, it can feel like a financial “gotcha.” What Are Supplemental Property Taxes? When you buy a property in California, the county reassesses its value b