The seller’s tax bill is one of the easiest numbers to misread when you’re buying a home. In the South Bay, where plenty of homes have stayed with the same owners for decades, the taxes a seller pays today can be a fraction of what you’ll pay after closing. Here’s how California property taxes work and what to plan for before you write an offer.
How Does Proposition 13 Affect Property Taxes in California?
Proposition 13, approved by voters in 1978, sets the base property tax rate at 1% of a home’s assessed value. Voter-approved bonds and direct assessments for the area are added on top of that. It also limits yearly increases in assessed value to 2%, or the rate of inflation if that’s lower.
The catch is that a home is reassessed at market value when it changes hands. Your assessed value resets to roughly your purchase price, not the price the seller paid.
That’s why two similar homes on the same street can carry very different tax bills. A neighbor who bought in 1995 may pay a small fraction of what you will.
How Much Will I Actually Pay?
Start with your purchase price and apply the full local tax rate, not just 1%. Bonds for schools, water, and other local needs usually push the total rate above 1%, and the exact figure depends on the parcel’s tax rate area.
Small differences add up. On a $1.5 million home, every tenth of a percent is another $1,500 a year. Ask your agent to pull the actual rate for the property so your monthly payment estimate is real.
What Is a Supplemental Property Tax Bill?
This is the bill that catches new owners off guard. After you buy, the county reassesses the home and bills you for the difference between the old assessed value and the new one, prorated from your closing date. Depending on when you close, you may receive two of these bills.
They often arrive three to nine months after closing. And they usually aren’t paid from your lender’s impound account, so the bill comes to you directly. If one shows up, call your loan servicer right away and confirm who is paying it.
Does the Home Have Mello-Roos or Other Special Taxes?
Mello-Roos is a special tax created under a 1982 California law to fund infrastructure and public services in a specific district. It appears on the county property tax bill, isn’t based on the home’s value, and stays in place until the district’s bonds are paid off.
These districts are most common in newer developments, so don’t assume either way. Sellers must disclose Mello-Roos and similar assessments, and they also show up on the preliminary title report. Read both before your contingencies expire.
Don’t Skip the Homeowners’ Exemption
If the home is your primary residence on January 1, you can claim California’s Homeowners’ Exemption. It takes $7,000 off your assessed value, which saves about $70 a year in Los Angeles County. You only apply once, yet the LA County Assessor has said about one in three eligible homeowners never claim it.
How Berkshire Hathaway HomeServices Helps You Budget With Confidence
Property taxes are part of your monthly payment for as long as you own the home, so they deserve the same attention as your interest rate. Our agents can pull a property’s tax history, walk through the disclosures and title report with you, and help you work with your lender on a realistic estimate before you commit.
If you’re getting ready to buy in the South Bay, call Berkshire Hathaway HomeServices at (310) 373-0021. We’ll help you understand the full cost of the home you want, not just the asking price.