The short answer: California’s Proposition 19 allows homeowners who are 55 or older to sell their primary residence and transfer its property tax base to a replacement home anywhere in California, up to three times, as long as they buy or build the new home within two years of selling. If the new home costs more than the “equal or lesser value” limit, the difference is added to the transferred value, so careful timing and planning can make a real difference.
Many homeowners in Rocklin, Roseville, Granite Bay, and Lincoln have been in their homes for a long time. The yard takes more work than it used to, and a single-story home closer to family sounds appealing. A common question is: “If I sell, will my property taxes go way up?”
Proposition 19 is a big part of the answer. Here is a plain-English overview of how the base year value transfer works for homeowners 55 and older, followed by a practical timeline for a downsizing move.
Please note: This is general information, not legal or tax advice. Property tax rules have details and exceptions, so confirm your situation with the County Assessor and a qualified tax professional or attorney. The BOE’s Proposition 19 page is the best official source for details.
What Proposition 19 Means for Homeowners 55 and Older
California voters approved Proposition 19 in November 2020. Its official name is the Home Protection for Seniors, Severely Disabled, Families, and Victims of Wildfire or Natural Disasters Act. The base year value transfer provisions became operative on April 1, 2021, and they replaced the older Propositions 60 and 90 rules.
From Proposition 13 to Proposition 19: Why Your Base Year Value Matters
Under Proposition 13, approved in 1978, real property such as your home is reassessed to market value only when it changes ownership or has new construction. That market value becomes your “base year value.” After that, it is adjusted each year for inflation, by no more than 2% a year, and the general property tax rate is limited to 1% of assessed value plus voter-approved bonds.
For long-time owners, that adjusted value is often far below today’s market value. Without a transfer, buying a new property would normally mean a new assessment at the full purchase price. Proposition 19 gives eligible homeowners the ability to take that low property tax base with them, moving their tax base to another home instead of starting over.
Who Qualifies for the Base Year Value Transfer
You may qualify for the base year value transfer if, on the date your original property is sold, you are:
- At least 55 years of age
- Severely and permanently disabled
- A victim of a wildfire or natural disaster, as defined by the law
You only need to meet one of these categories.
The Key Rules for Your Replacement Property
- Both homes must be your principal residence. The original property must be eligible for the homeowners’ exemption at the time of sale or within two years of buying the replacement, and the replacement property must become your primary home. A rental or vacation home does not qualify.
- Two-year window. You must purchase or complete new construction of the replacement property within two years of the sale of the original property. The order can go either way.
- Statewide. The replacement home can be in any of California’s 58 counties. Under the old rules, most counties limited transfers to the same county or a short list of participating counties.
- Up to three times. Homeowners 55 and older can use the transfer three times, regardless of whether they used the old Prop 60 or 90 transfer before.
- Any value. You can buy a more expensive home, but an adjustment applies.
How Property Value Affects the Transfer: The Equal or Lesser Value Test
If your replacement property passes this test, your base year value transfers with no adjustment. According to the California State Board of Equalization (BOE), “equal or lesser value” generally means the value of the replacement property is:
- 100% or less of the value of the original property, if you buy the replacement before you sell
- 105% or less, if you buy within the first year after you sell
- 110% or less, if you buy within the second year after you sell
If the value of the replacement home is higher than that limit, the difference is added to your transferred base year value. The BOE gives this example: an original home with a market value of $400,000 and a factored base year value of $100,000 is sold, and a replacement is bought in the first year for $600,000. The adjusted limit is $420,000 (105% of $400,000). The $180,000 difference is added to the $100,000 base, so the new taxable value is $280,000, rather than the full $600,000.
What the Tax Savings Can Look Like
Applying only the 1% general rate to that BOE example, a $280,000 taxable value works out to about $2,800 in annual property tax, compared with about $6,000 a year on a full $600,000 assessment. Your actual bill will be higher once local voter-approved bonds and assessments are added, but the gap shows how much smaller the property tax increase can be with the transfer. Your County Assessor and tax professional can help you estimate your own property tax savings.
How and When to File Your Claim
The transfer is not handled through escrow. After you have sold your original home, bought your replacement, and moved in, you file a base year value transfer claim with the County Assessor in the county where the replacement property is located. For homeowners 55 and older, the form is BOE-19-B, Claim for Transfer of Base Year Value to Replacement Primary Residence for Persons at Least Age 55 Years.
The BOE’s filing checklist lists the deadline as within three years of the date the replacement property is purchased or newly constructed. The BOE also explains that the date of transfer is the later of the sale of your original home or the purchase (or completed new construction) of your replacement home. If you are moving within Placer County, the Placer County Assessor’s Office offers the BOE-19-B as an online eForm and is the place to file and ask questions: (530) 889-4300 or assessor@placer.ca.gov.
Should You Buy First or Sell First?
Proposition 19 allows either order, as long as both happen within two years of each other. Each path has tradeoffs.
Buying first lets you move once, on your schedule, and gives you the most room under the value test (100% of your original home’s value). The BOE notes that until your original home sells, you will pay property taxes on the replacement home’s full market value, with no refund for that period. Financing two homes at once also requires careful planning with your lender.
Selling first frees up your equity and gives you a clear budget. It also gives you a little more room under the value test (105% in year one, 110% in year two). The tradeoff is that you may need a rent-back, a short-term rental, or a stay with family while you find the right next home.
I help sellers map out both scenarios with real numbers before anything goes on the market.
Property Tax and Income Tax: Don't Forget the Federal Side
A Calm Timeline for a Downsizing Move
Downsizing goes best when it is not rushed. Here is a timeline I often share with sellers.
12 Months Out
- Talk through your goals: location, single-story living, HOA or no HOA, nearness to family and health care
- Meet with your CPA or financial advisor about taxes and budget
- Request a pricing review of your current home
- Start sorting one room or closet at a time
6 Months Out
- Decide on the buy-first or sell-first path
- Get pre-approved if you plan to finance the next home
- Tour possible next homes and communities
- Schedule repairs that buyers are likely to notice
90 Days Out
- Finish decluttering and donate, sell, or gift what will not move with you
- Line up movers and, if helpful, a senior move manager or estate sale company
- Prepare your home for photos
Listing and Closing
- Review offers, timelines, and any rent-back needs
- Plan your move-in date for the replacement home
- After both transactions are complete and you live in the new home, file your BOE-19-B claim
Where Placer County Downsizers Often Look
Every downsizing move is personal. Some sellers want a single-story home in their current neighborhood. Others look at active adult communities such as Esplanade, Sun City Lincoln Hills or Sun City Roseville, a low-maintenance townhome, or a home closer to grandchildren in Sacramento County, El Dorado County, or farther away. Because Proposition 19 works statewide, you have more flexibility than the older rules allowed.
How I Help Downsizing Sellers
My role is to be your advocate and guide: clear communication at every step, honest pricing advice, a plan for preparing your home without overspending, and coordination with your tax professional, lender, and movers.
Frequently Asked Questions
How does the Proposition 19 property tax transfer work for seniors?
If you are at least 55 when you sell your principal residence, you can buy or build a replacement home within two years, in any California county, and ask the Assessor to transfer the base year value to it. If the new home passes the value test, your taxable value carries over with no adjustment. If it costs more, the difference is added.
Can I use Prop 19 if I am buying a more expensive home?
Yes. Proposition 19 allows a replacement home of any value. If it is worth more than the value limit (100%, 105%, or 110% of your original home’s value, depending on timing), the difference is added to your transferred base year value, so your new taxes will be higher than before but typically lower than a full reassessment.
Do I have to stay in Placer County to keep my tax base?
No. The replacement home can be anywhere in California. You file the claim with the Assessor in the county where your new home is located.
How many times can I use the Proposition 19 transfer?
If you are at least 55, you can use the transfer up to three times, even if you used your one-time base year value transfer under the older Prop 60 or 90 rules.
Is there a minimum time I need to live in my current home?
No set time period is required. According to the BOE, the original home must be your principal residence and eligible for the homeowners’ exemption either at the time of sale or within two years of buying the replacement home.
Is the transfer handled in escrow?
No. You file a claim form, BOE-19-B for homeowners age 55 or older, with the County Assessor after both transactions close and you are living in the replacement home. The BOE lists the deadline as within three years of buying the replacement home or completing new construction.
My spouse is younger than 55. Do we still qualify?
Generally, yes. BOE guidance says that as long as the spouse who is at least 55 is on title to the original home on its date of sale and to the replacement home on its date of purchase, and all other requirements are met, the transfer can qualify. The other spouse does not need to be 55.
Can my adult child be on title to the new home with me?
Yes, in many cases. The BOE explains that you do not need to be the sole owner of the replacement home. As long as you are one of the buyers, you owned and lived in the original home, and all other requirements are met, you can transfer your base year value to the entire replacement home.
What if I buy before I sell my current home?
That is allowed, as long as the original home sells within two years of buying the replacement. Until the original home sells, you will pay property taxes on the new home’s full value, with no refund for that period.
Can I build a new home instead of buying one?
Yes. The law allows a replacement home that is purchased or newly constructed, as long as the new construction is completed within two years of the sale of your original home, before or after, and all other requirements are met.
Can I sell or give my house to my child for $1 to keep my low property taxes?
Not as a simple shortcut. A sale or gift to your child is a change in ownership, and since February 16, 2021, it generally keeps your taxable value only if it qualifies for Proposition 19’s parent-child exclusion. That exclusion applies to a family home only if your child makes it their principal residence, and your child should file for the homeowners’ exemption within one year of the transfer (a later filing only helps going forward). If the home’s market value is more than its factored base year value plus about $1 million (adjusted every two years, $1,044,586 for transfers from February 16, 2025 through February 15, 2027), the excess is added to the taxable value. A rental home does not qualify. Because there can also be income tax and estate planning effects, talk with an estate planning attorney and your CPA first.
Let's Plan Your Next Chapter Together
If you are starting to think about downsizing, I would be glad to send you my free Downsizing Seller’s Checklist. It walks you through Prop 19 eligibility, a numbers worksheet, a 12-month timeline, and a room-by-room decluttering plan. To request your copy, just reach out to me through sandyfinley.com or call or text me at 916-397-8649.
And when you would like to talk through your options, with no pressure and no rush, I am here. Call or text me at 916-397-8649, or email myrocklinrealtor@gmail.com.
Sandy Finley
REALTOR® | Placer County, CA
Real guidance. Real results. Right here in Placer County.
📞 916-397-8649
📧 myrocklinrealtor@gmail.com
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Serving Roseville, Rocklin, Granite Bay, Lincoln, Loomis, and surrounding communities.
This article is for general information only and is not legal or tax advice. Proposition 19 has additional requirements and exceptions. Please consult the County Assessor, a tax professional, or an attorney about your specific situation.