Prop 19 Downsizing in Palos Verdes and South Bay

Short answer: If you are 55 or older (or severely disabled, or lost your home to a wildfire or declared disaster), California's Proposition 19 lets you sell your primary residence and carry its low taxable value to a replacement primary residence anywhere in California, up to three times. You must buy the replacement within two years before or after the sale. If the new home costs more than 100 percent of your old home's value (buying first), 105 percent (buying in year one after the sale), or 110 percent (buying in year two), the difference is added to your transferred base. The transfer is not automatic: you file form BOE-19-B with the Assessor of the county where the new home is, within three years of buying it. The order you buy and sell in changes both your tax result and how you finance the move.

Why this matters so much on the Peninsula and in the South Bay

Under Proposition 13, your taxable value is reset to market value when you buy, then can rise only slightly each year. Owners who bought in Palos Verdes or the Beach Cities decades ago often carry a taxable value far below what the home would sell for today. Without Prop 19, a move resets the new home to its full purchase price. With Prop 19, the old base comes with you. For a household that has lived in the same Torrance or Rolling Hills Estates home for 20 or 30 years, that difference can be the deciding factor in whether a move makes sense at all.

The rules in one table

Requirement	What the rule says
Who	At least one owner is 55 or older on the date the original home sells, or is severely and permanently disabled, or the home was substantially damaged by wildfire or a Governor-declared natural disaster.
Original home	Must be sold, and must have been your principal residence at the time of sale or within two years of buying the replacement. There is no minimum number of years you must have lived there.
Replacement home	Purchased or newly built within two years of the sale, before or after. Must be your principal residence when you file.
Location	Anywhere in California. Moving from Los Angeles County to Orange County, or the reverse, qualifies.
Value	Any price. Value above 100, 105, or 110 percent of the original home's value is added to the transferred base.
How many times	Three times for age or disability, even if you used Proposition 60 or 90 before.
How to claim	BOE-19-B (age 55+), BOE-19-D with BOE-19-DC (disability), or BOE-19-V (wildfire or disaster), filed with the Assessor of the replacement home's county within three years of the replacement purchase. Not handled through escrow.

Source: California State Board of Equalization Proposition 19 page and Letter to Assessors 2021/019, checked November 2, 2026.

Buy first or sell first: a worked example

The example below is hypothetical and uses round numbers to show the State Board of Equalization's method. Your actual values are set by the Assessor.

Say you sell a Torrance home with a full cash value of $1,400,000 and a factored base year value (your current taxable value) of $350,000, and you buy a single-story home in Rancho Palos Verdes for $1,600,000.

Timing of the replacement purchase	Value test	Amount added	New taxable value
Bought before selling	100% x $1,400,000 = $1,400,000	$200,000	$550,000 (after the Torrance home sells)
Bought within year 1 after selling	105% x $1,400,000 = $1,470,000	$130,000	$480,000
Bought in year 2 after selling	110% x $1,400,000 = $1,540,000	$60,000	$410,000
No Prop 19 claim	Not applicable	Not applicable	$1,600,000

Proposition 13's general levy is 1 percent of taxable value, before local voter-approved bonds and assessments. On that 1 percent alone, a taxable value of $480,000 instead of $1,600,000 is about $11,200 a year less, and the gap carries forward every year you own the home. If you buy first, you also pay tax on the full $1,600,000 from the purchase until the Torrance home sells, and the State Board of Equalization says there is no refund for that period.

How to finance each path

Prop 19 is a tax rule. The harder question for most Peninsula and South Bay sellers is how to pay for the next home before the old one's equity is free. Here are the common structures we compare:

Path	How it is financed	Prop 19 effect	What to watch
Sell first, then buy	Use sale proceeds as the down payment, or pay cash. A rent-back or short-term rental covers the gap.	Best value test (105% or 110%), no double tax bills.	Moving twice, and you must buy within two years.
Buy first with a bridge loan	A short-term loan against your current home's equity funds the down payment; it is paid off when the old home sells. See our bridge loan guide.	100% value test, and full-value tax on the new home until the sale.	Bridge cost, and qualifying while you carry two homes.
Buy first with a HELOC or home equity loan	Open a line or fixed loan on your current home before listing it, then use it for the down payment. See our standalone HELOC and fixed-rate home equity loan guides.	Same as any buy-first path.	Many lenders will not open a line on a home that is already listed, so timing matters.
Offer contingent on your sale	Your purchase closes only after your current home sells, often in a back-to-back escrow.	Usually lands in the buy-first or sell-first test depending on which escrow closes first; confirm the order with your escrow officer.	Weaker offer in a competitive Peninsula or Beach Cities listing.

On any buy-first path, the lender will usually need to see that you can carry both housing payments, or that the old home is under contract, and how much cash you will have left in reserves. Bring your most recent property tax bill for both homes so we can model the payment before and after the Prop 19 claim is approved.

Checklist before you list or write an offer

Confirm at least one owner will be 55 or older on the sale date of your current home.
Pull your current taxable value from your Los Angeles County tax bill so you know what you are protecting.
Decide your order: sell first for the best value test, or buy first for one move and plan for the full-value tax period.
Price the financing for both paths side by side: sale proceeds, bridge loan, HELOC or home equity loan, and a contingent offer.
If you are moving into a condo, a hillside home on the Peninsula, or a home with insurance challenges, review the property-specific guides below first.
After both closings and once you live in the new home, file BOE-19-B with the replacement county's Assessor, within three years of the purchase. Talk with a tax professional or attorney about your situation.

Related guides

Frequently asked questions

Who qualifies for a Prop 19 base year value transfer?

A homeowner who is at least 55 years old, severely and permanently disabled, or whose home was substantially damaged by a wildfire or Governor-declared natural disaster. At least one qualifying owner must meet the requirement on the date the original home is sold. The original home must have been your principal residence, and you must own and live in the replacement home as your principal residence when you file the claim.

Can I move from Torrance or Palos Verdes to a home in another county and keep my tax base?

Yes. Since April 1, 2021, Proposition 19 allows the transfer to a replacement primary residence anywhere in California, including Orange County, Riverside County, or San Diego County. You file the claim with the Assessor of the county where the replacement home is located.

Can I buy my next home before I sell my current one?

Yes, as long as the original home sells within two years of buying the replacement. Two catches: the transfer does not take effect until the original home sells, so you pay property tax on the replacement's full value in the meantime with no refund, and the value test is 100 percent of the original home's value instead of 105 or 110 percent.

What if my replacement home costs more than the home I sold?

You can still transfer your base. The difference between the replacement's value and the adjusted value of your original home (100, 105, or 110 percent, depending on timing) is added to your transferred taxable value. You keep most of the benefit, just not all of it.

How many times can I use Prop 19?

Up to three times for owners who qualify by age or disability, even if you used Proposition 60 or 90 before.

Is the Prop 19 transfer handled in escrow?

No. According to the State Board of Equalization, you file the claim yourself after both transactions close and you live in the replacement home. For owners 55 and older the form is BOE-19-B, filed within three years of buying the replacement home.

Does Prop 19 change how a lender qualifies me?

Prop 19 changes your property tax, and property tax is part of your monthly housing payment, so a lower tax figure can help your debt-to-income ratio once the transfer is approved. Because the claim is filed after closing, lenders commonly qualify you using the tax on the full purchase price. Ask your loan officer how they will treat taxes on your specific file.

Plan the move before you list

Tell us your current home's estimated value, its taxable value from your tax bill, and the price range you are shopping. We will lay out the sell-first and buy-first financing side by side so the property tax and the mortgage work together.

Call 424-RATE-ZEN (424) 728-3936 Book a 15-Minute Strategy Call

Sources

Rules checked November 2, 2026 and subject to change. This page is general education, not tax or legal advice; the county Assessor decides every claim. It is not a commitment to lend. All loans are subject to credit, income, property, and program approval.