Over 55? Prop 19 Lets You Downsize in California Without a Bigger Property Tax Bill

If you've owned your Santa Cruz, Santa Clara or Monterey County home for a long time, your property tax bill is probably a lot lower than your neighbor's, and Prop 19 may let you take that lower base with you when you move. Yes, California homeowners who qualify can transfer their factored base year value to a replacement primary residence anywhere in the state. According to the California Board of Equalization, eligible owners include those who are 55 or older, severely disabled, or victims of a declared disaster.

That's a big deal when you look at what homes are selling for right now. According to MLSListings' September 2026 County Summary Report, the median single family home in Santa Clara County hit $1,880,000, Santa Cruz County came in at $1,250,000, and Monterey County at $920,000. If you bought your place 20 or 30 years ago, your assessed value is nowhere near those numbers. Losing that tax base when you move would sting. Prop 19 was designed so you don't have to.

Who qualifies for a Prop 19 property tax transfer?

The California Board of Equalization says three groups of owners are eligible:

• Homeowners who are 55 years of age or older
• Owners who are severely disabled as defined by state law
• Owners whose home was substantially damaged or destroyed by a declared disaster

You have to be using your current home as your primary residence, and the replacement has to be your primary residence too. This isn't a tool for investment properties or vacation homes. It's for the place you actually live.

If you're thinking about what your home might fetch in today's market, a free home valuation is a good place to start before you make any decisions.

Where can I move under Prop 19?

Before Prop 19 passed in 2020, the old rules (Props 60 and 90) limited where you could move and still keep your tax base. Prop 19 changed that completely. According to the California Board of Equalization, you can buy your replacement primary residence anywhere in California, not just in the same county.

So if you're selling a home in Los Gatos and want to move to Carmel, or leaving Scotts Valley for a smaller place in Salinas, or downsizing anywhere across Santa Cruz, Santa Clara and Monterey counties, the transfer follows you. That flexibility opens up a lot of options for people who want to be closer to family, closer to the coast, or just somewhere more manageable.

You can browse current conditions on the Santa Cruz County market report or the Monterey County market report to get a feel for what's out there.

How many times can I use Prop 19?

This surprises a lot of people in a good way. According to the California Board of Equalization, eligible owners can use the Prop 19 transfer up to three times in their lifetime. So if you downsize once and later decide you want to move again, you may still have the benefit available to you. It's worth keeping track of how many times you've used it.

What is the timing rule when selling and buying?

You don't have to sell first and then scramble to buy. The California Board of Equalization says you must purchase the replacement home within two years before or after the sale of your original home. That window gives you real flexibility. Some people buy the replacement first and then list their current home. Others sell first and take their time finding the right place. Either approach can work, as long as the gap between the two transactions is two years or less.

If you're ready to think through the selling side, the sell your home page walks through what that process looks like with me.

What happens if I buy a more expensive home?

Prop 19 works best when you're buying a home that costs the same or less than the one you're selling, and the California Board of Equalization spells out how the math works based on timing:

• If you buy the replacement home before you sell, it must be worth 100% or less of your current home's sale price to transfer the full base value
• If you buy within the first year after selling, the replacement must be 105% or less of your sale price
• If you buy in the second year after selling, the replacement must be 110% or less

If the replacement home costs more than those thresholds, you don't lose the benefit entirely. According to the California Board of Equalization, the difference between the replacement home's full market value and your transferred base value gets added on top. So you still get a partial benefit, just not a full one. That's still a lot better than starting over with a brand new assessed value on a $900,000 or $1,200,000 purchase.

Don't forget about the capital gains exclusion

Prop 19 handles your property taxes. A separate federal rule may help with your income taxes. According to IRS Publication 523, if you've owned and lived in your home for at least two of the last five years, you can exclude up to $250,000 in capital gains from your federal taxable income, or up to $500,000 if you're married filing jointly. That's worth a conversation with your tax advisor before you close.

For a closer look at the downsizing process and what it actually looks like on the ground in our counties, I've put together some resources that go deeper on the logistics.

How to claim the Prop 19 benefit

You don't get it automatically. According to the California Board of Equalization, you need to file form BOE-19-B with your county assessor's office. You have up to three years from the date you purchase the replacement home to file, but sooner is better. Missing that window means you lose the benefit even if you qualified for it.

Frequently Asked Questions

Can I use Prop 19 if I move from Santa Clara County to Monterey County?

Yes. According to the California Board of Equalization, Prop 19 allows eligible owners to transfer their factored base year value to a replacement primary residence anywhere in California. Moving between counties is fine.

How old do I need to be for the age-based Prop 19 benefit?

You need to be at least 55 years old. That's the threshold the California Board of Equalization uses for the age-based eligibility rule.

How long do I have to buy the replacement home?

According to the California Board of Equalization, you must purchase the replacement home within two years before or after you sell your original primary residence.

What form do I need to file, and how long do I have?

You file form BOE-19-B with your county assessor. The California Board of Equalization gives you up to three years from the date of purchase of the replacement home to file, but filing sooner protects you if anything comes up.

Can I also exclude capital gains when I sell?

Possibly yes, through a separate federal rule. According to IRS Publication 523, homeowners who owned and lived in their home for at least two of the last five years may exclude up to $250,000 in capital gains from federal taxes, or up to $500,000 for married couples filing jointly. Talk to a tax professional about your specific situation.

Keep reading

• Bought or Sold a Home 20 Years Ago? Today's Market Is a Different World
• The Two Gaps Reshaping Santa Cruz

What's your home worth today?

Online numbers are a starting point. If you want the real answer for your home and your street, I'll put together a free, personalized home valuation for you, no pressure and no obligation. Get your free home valuation here, or call or text me at (650) 695-1919.

Sirrom Alizem
REALTOR® | eXp Realty Nor Cal Inc | DRE #02137532
(650) 695-1919 | sirrom@realtywithsirrom.com | www.realtywithsirrom.com