California property taxes work under rules that date back to 1978, and Proposition 13 still shapes what a new buyer pays today. The short version: your tax bill is roughly 1% of your purchase price, adjusted thereafter, not 1% of the type price’s older owners pay. Understanding the rules — especially reassessment on purchase — stops you from wavering a budget off the seller’s current bill.
Last updated: September 2026.
How Proposition 13 Works
Prop 13, passed in1978, sets three core rules: the base property tax rate at 1% of assessed value; annual assessed-value increases capped at 2% or inflation, whichever is lower; and a reassessment to current market value whenever ownership changes. Local voters can add bonded indebtedness on top of that 1% with voter approval, which is why total effective rates often land around 1.1% to 1.3% of assessed value depending on the area.
The Reassessment Moment That Matters for Buyers
When you buy a home in California, the property is reassessed to your purchase price. Your first-year tax bill will therefore sit near 1.1%–1.3% of the price you paid (plus any voter-approved overrides and special districts), not near what the long-time seller was paying on their Prop-13-capped value. Example, not a quote: a home bought at $750,000 in a typical area is likely to carry an initial tax bill in the low-to-mid four figures annually before exemptions and any special districts — versus what the seller may have been paying on an assessed value far below the purchase price.
The Homeowners’ Exemption
Owner-occupants can file a $7,000 homeowners’ exemption against their assessed value, which saves about $70 to $75 per year for most homeowners. (New home buyers in some counties must affirmatively file it with the assessor’s office.) It’s small relative to the bill, but it’s free money-and it also signals your primary-residence status for other rules.
What Happens to Assessed Value After You Buy
After reassessment, your assessed value generally grows no more than 2% per year (or inflation if lower), so your bill grows slowly from your purchase-price baseline. But two things can change it:
- Voter-approved bonds. Local school, transit, and infrastructure bonds add overrides that show up as additional line items.
- Mello-Roos districts. Homes in new communities or certain developments can carry separate special tax assessments (often called Mello-Roos, after the law that created them., with fixed charges outside the 1% cap. These rarely go down, and they don’t appear on every listing — ask your disclosure package.
- Transfers later in ownership. If you transfer to a family member, Prop 19 changed some of the old parent-child exclusion rules (see below), so consult a professional before structuring any transfer.
Declines in Value: Prop 8
If your home’s market value falls below its Prop-13 assessed value, you can ask the assessor for a temporary assessment reduction under Proposition 8. When the market recovers, your assessed value can climb back up (capped at 2% per year,, until it catches up. This helps some owners who bought near cycle peaks — but you must apply, and the relief is not automatic.
Transferring the Tax Base: Prop 19 for Seniors and Disaster Victims
Under Proposition 19 (passed 2020,, homeowners 55 and older, certain severely disabled persons, and victims of a declared disaster can transfer their assessed value to a new primary residence anywhere in California — up to three times in a lifetime. If the new home costs more than the old, only a portion of the old assessed value transfers. This is a significant benefit for those who qualify, but it does not apply to most standard purchases.
Frequently Asked Questions
Are California property taxes higher than Florida’s?
At the base rate, California’s 1% cap is similar to or lower than many Florida areas in effective terms — but California purchase prices are far higher, so the dollar bill is usually much larger. Also, California’s rules cap how fast existing owners’ assessments grow, which doesn’t help a new buyer at closing.
Can I pay the seller’s current tax amount?
No. Reassessment triggers at purchase, so your first-year bill is based on your purchase price. Always estimate your own tax liability for the address and price.
What is the difference between Prop 13 and Prop 19?
Prop 13 caps annual assessment growth and sets the 1% base rate. Prop 19, passed later, lets qualifying seniors and others transfer a tax base to a new home — it does not lower your purchase reassessment.
Where do I file the homeowners’ exemption?
With your county assessor, usually within a certain window after purchase. Your closing agent or title company can point you to the form, or you can file online in most counties.
Related Guides
Sources
- California Board of Equalization — Proposition 13, Prop 8, homeowners’ exemption, and tax rate guidance.
- County assessors — reassessment notices, exemption filing, and parcel data for the specific property.
- California Proposition 19 (2020) implementation guidance — transfer rules for seniors and disaster victims.