Prop 19 Calculator

California
California Proposition 19

See how Proposition 19 shapes the property tax bill on a home — whether it is passing to a child, or moving with a qualifying homeowner. An estimate to guide a conversation, not tax or legal advice.

The inherited property
$
The taxable value on the current tax bill (the Prop 13 protected base), not the market price.
$
What the home is worth on the date it passes to the heir.
Since Prop 19, the exclusion only survives if the heir makes it their own home.
$
The full cash value (sale price) of the home being sold.
$
Purchase price, or cost of new construction, of the home being bought.
One of these is required to move a tax base under Prop 19.
%
Estimated outcome
New assessed value after transfer
$0
Full reassessment
$0
estimated tax per year
With Prop 19
$0
estimated tax per year
Estimated tax kept each year
$0
$0

    Estimate only. Property tax outcomes depend on county assessor determinations and facts specific to each transfer. 805title provides title and escrow services and does not provide tax or legal advice. Confirm any figure with the county assessor or a qualified tax or legal professional before relying on it.

    How the Prop 19 calculator works

    This Prop 19 calculator gives you a fast, plain-English estimate. Enter the current assessed value, the market value at transfer, and a local tax rate. The tool then compares two outcomes. One is the tax bill with the Prop 19 exclusion applied. The other is a full reassessment at today’s market value. It fits two common situations. The first is a home passing from parent to child, or grandparent to grandchild. The second is a qualifying homeowner over 55 who moves and carries their tax base to a new home.

    What Proposition 19 changed

    Proposition 19 took effect in 2021. It narrowed the old parent-to-child exclusion. Before Prop 19, a child could inherit a home and keep the parent’s low assessed value in most cases. Now the full exclusion only applies when the child makes the home their primary residence. Even then, the protected amount is capped. Prop 19 also gave more freedom to certain homeowners who move and keep their tax base. This includes those over 55, those who are severely disabled, and those who lost a home to a disaster. If you are buying or selling during one of these transfers, our escrow services team can help coordinate the closing.

    Why the assessed value matters so much

    California property tax is based on assessed value, not market value. A home bought decades ago may carry an assessed value far below what it would sell for today. That gap is exactly what Prop 19 affects. When a home is reassessed at current market value, the annual tax bill can jump sharply. When the exclusion applies, much of that low assessed value is preserved. The calculator shows both numbers side by side so the difference is easy to see. For a residential transfer, our residential title and escrow services can walk you through the paperwork.

    Use this as a conversation starter, not tax advice

    This tool is an estimate, not a ruling. Real Prop 19 outcomes depend on filing deadlines, primary-residence rules, and county assessor decisions. Use the numbers to frame a smarter conversation with your tax advisor or attorney. Is a transaction already in motion? Reach out to 805 Title and we can point you to the right resources.

    Frequently asked questions

    Does Prop 19 apply to a child who inherits but does not move in?

    Yes. If the child does not make the home their primary residence, the property is generally reassessed at market value. The full parent-to-child exclusion no longer applies.

    Is there a limit on the inherited-home exclusion?

    Yes. Even when the child moves in, the protected amount is capped. Value above that cap can still be reassessed.

    Can a homeowner over 55 move and keep their tax base?

    Often, yes. Prop 19 lets eligible homeowners transfer their assessed value to a new primary residence. This can happen anywhere in California, subject to the rules. This can be done up to three times.

    Is this calculator official?

    No. It is an independent estimate from 805 Title. It is not legal or tax advice. It does not replace guidance from your county assessor or a qualified professional. Ready to move forward? You can open an order with us.