Prop 19 Base-Year Transfer: A Manhattan Beach Worked Example

Short answer

Under Proposition 19, a California homeowner who is 55 or older, severely disabled, or a wildfire/disaster victim can move their existing property tax base to a replacement home anywhere in California, up to three times. If the replacement costs more than the home sold, the difference is added to the transferred base — you keep the old assessment and pay the new tax only on the spread. Below is the arithmetic on a real-shaped Manhattan Beach downsize.

The scenario

A couple bought in the Manhattan Beach Tree Section in 1998. They are both over 55 and moving to a single-level home in Torrance.

Without Prop 19

The Torrance home is reassessed at its full purchase price of $2,100,000. At roughly 1.1% plus local direct assessments, that is about $23,900 a year — a jump of roughly $16,500.

With a Prop 19 base-year transfer

The replacement ($2,100,000) costs less than the home sold ($3,200,000), so the transferred base carries over unchanged:

• New assessed value: $640,000
• New annual tax: ~$7,400
• Annual savings versus no transfer: ~$16,500

What if they had bought up instead?

Say the replacement was $3,700,000 — $500,000 more than the sale price. Prop 19 still works; the excess is added on top:

• Transferred base: $640,000
• Plus the difference ($3,700,000 − $3,200,000): $500,000
• New assessed value: $1,140,000
• New annual tax: ~$12,900

Compare that to a full reassessment at $3,700,000, which would run roughly $42,000 a year. The transfer is worth about $29,000 annually even on a move-up.

Rates shown are approximate. Actual bills include voter-approved bonds and direct assessments that vary by tax rate area — Torrance, Manhattan Beach, and Palos Verdes all differ.

The rules that decide whether this works

• Age or status: at least one owner-occupant must be 55+, severely and permanently disabled, or a victim of a wildfire or governor-declared disaster.
• Both homes must be the principal residence. Not a rental, not a second home.
• Two-year window: the replacement must be bought or newly constructed within two years before or after the sale of the original.
• Three transfers: the 55+ and disability categories are capped at three lifetime transfers. Disaster victims are not.
• Anywhere in California. The old county-reciprocity limits are gone.

Filing: the part that costs people the benefit

The claim is filed with the county assessor where the replacement property is located, on form BOE-19-B (base-year transfer for persons 55+). File within three years of the replacement purchase to get full retroactive relief; file later and relief generally begins with the assessment year in which you filed.

Practical sequence:

1. Close the sale of the original home; keep the closing statement.
2. Close the replacement purchase within the two-year window.
3. File BOE-19-B with the assessor of the replacement county, attaching both closing statements and proof of the homeowners' exemption on both properties.
4. Expect a supplemental bill in the interim while the claim processes, then a corrected bill and refund.

Do not confuse this with BOE-19-P, which is the parent-child exclusion for inherited homes. Different form, different deadline, different rules.

Frequently asked questions

Can I transfer my tax base more than once under Prop 19? Yes — up to three times if you qualify under the 55+ or severely disabled category.

Does Prop 19 work if I buy a more expensive home? Yes. The transferred base is increased by the amount the replacement exceeds the sale price of the original.

How long do I have to buy the replacement home? Two years before or after the sale of the original property.

What form do I file for a 55+ base-year transfer? BOE-19-B, filed with the assessor in the county where the replacement home is located.

Run your own numbers

Send us the address you're selling and the one you're buying. Matt Goeglein and Xavi de la Piedra IV will pull the current assessed value from the county record and show the before/after on paper — including transfer tax and title costs — before you list. Full reference: Prop 19 and property tax transfers.