Prop 19 Deadlines, Forms, and Filing Timeline in California

Editorial note: Gold California is not a tax advisor, a licensed attorney, or a county assessor. This page is a plain-English explainer of California Proposition 19 filing deadlines, forms, and timelines for readers age 55 and older, severely disabled homeowners, and wildfire or disaster victims. Every figure, date, and rule is cited to the California Board of Equalization or to the Revenue and Taxation Code. Consult a licensed California CPA, attorney, or your county assessor for your specific situation.

Last updated: August 15, 2026 · By Gold California Editorial

This page is for California homeowners age 55 or older, severely and permanently disabled homeowners, wildfire and Governor-proclaimed disaster victims, surviving spouses, and adult children helping a parent. It covers the three deadlines that decide whether a Proposition 19 base year value transfer succeeds: the two-year window between sale and purchase, the three-year window to file the claim, and the one-year homeowners' exemption. It also lists the correct BOE form for each of the three qualifying categories.

Every date, form number, and code section below is cited to the California Board of Equalization or to the California Revenue and Taxation Code. This is not tax advice; consult a licensed California CPA, attorney, or your county assessor before you rely on it for your situation.

What are the Prop 19 deadlines you must know?

Three deadlines govern a valid Proposition 19 base year value transfer under Revenue and Taxation Code section 69.6. Missing any one of them can void the transfer, or reduce the relief the county assessor grants.

• 2 years, between sale and purchase. The replacement principal residence must be purchased or newly constructed within two years of the sale of the original principal residence. The order is not fixed; sale-then-purchase or purchase-then-sale both qualify.
• 3 years, to file the claim. The claim must be filed with the county assessor of the replacement home within three years of the replacement's purchase or new construction completion. This window is set in section 69.6(c)(1).
• 1 year, for the homeowners' exemption. The homeowners' exemption on the replacement should be on file within one year of the transfer, to prove principal-residence status at the county level.

All three windows are administered by the county assessor of the replacement home. Neither the Board of Equalization nor a county assessor can extend them. The operative dates come from the California Constitution and Revenue and Taxation Code section 69.6 (source: California Board of Equalization, Proposition 19 FAQs).

Which BOE form applies to your situation?

Section 69.6 covers three qualifying categories, and each one uses its own BOE claim form. A homeowner only needs to fit one category to file.

• Age 55 or older, file BOE-19-B. Full title: "Claim for Transfer of Base Year Value to Replacement Primary Residence for Persons at Least Age 55 Years." Filed with the county assessor of the replacement home.
• Severely and permanently disabled, file BOE-19-D. Full title: "Claim for Transfer of Base Year Value to Replacement Primary Residence for Severely Disabled Persons." Includes a certification of disability that meets the section 74.3 standard.
• Wildfire or Governor-proclaimed disaster victim, file BOE-19-V. Full title: "Claim for Transfer of Base Year Value to Replacement Primary Residence for Victims of Wildfire or Other Natural Disaster." Requires proof of the disaster damage.

The BOE publishes each form as a sample PDF, and every California county assessor reproduces it on its website. A few counties add a supplemental sheet for local claim-status tracking, but the underlying form and instructions are the same statewide (source: California Board of Equalization, Proposition 19 forms).

The forms are not interchangeable. Filing BOE-19-B when the qualifying category is disability, or filing BOE-19-D when the claim is really age-based, forces the assessor to return the claim. The correct form saves months.

The two-year window between sale and purchase

The two homes must be tied together in time. The replacement principal residence must be purchased or newly constructed within two years of the sale of the original principal residence. The window works in both directions.

You can sell the original home first and buy the replacement within two years, or buy the replacement first and sell the original within two years. Either sequence qualifies under section 69.6, provided at least one of the two transactions occurred on or after April 1, 2021 (source: BOE, Proposition 19 FAQs).

The two-year clock is measured in calendar days, not tax years. The BOE states plainly that it has no authority to extend or change the operative dates of Proposition 19. That includes the two-year window (same source).

The timing of when the replacement was bought or built also matters for the value test. The equal-or-lesser-value formula uses three tiers. 100 percent if the replacement was bought before the sale. 105 percent within the first year after the sale. 110 percent within the second year after the sale. See the sibling base year value transfer rule for the math side.

The three-year window to file the claim

The claim must be filed within three years of the date the replacement dwelling was purchased or new construction of the replacement dwelling was completed. This deadline is written into the statute at Revenue and Taxation Code section 69.6(c)(1) (source: California Legislative Information, Revenue and Taxation Code section 69.6).

The three years start from the closing date on the purchase, or from the date of completion on new construction. County assessors accept either the recorded deed date or the certificate of occupancy date as the trigger. In practice, most claimants file well inside three years so that the transferred base year value is retroactive to the acquisition of the replacement.

A claim filed inside the three-year window produces relief that reaches back to the date the replacement was acquired. The county assessor recomputes the assessed value on the replacement to the transferred factored base year value, and issues a refund for the difference on any property tax already paid at the higher unadjusted amount.

Late filing and prospective-only relief

A claim can still be filed after the three-year window closes, but the relief changes shape. The statute provides that a late claim is considered by the assessor, subject to two conditions (source: Revenue and Taxation Code section 69.6(c)(2)).

• Prospective only. Any base year value transfer granted on a late claim applies from the lien date of the assessment year in which the claim is filed. There is no retroactive refund for property tax paid at the unadjusted rate for prior years.
• Inflation-factored. The transferred base year value is factored to the assessment year in which the late claim is filed, using the annual inflation factor from section 51. That grow-up factor slightly raises the base compared to the on-time equivalent.

In plain terms, a late claim usually saves less than an on-time claim. The relief is limited to future years, and the base is grown forward. The BOE and county assessors treat the three-year window as the hard target and prospective-only relief as the fallback (source: BOE Letter to Assessors No. 2021/019, Proposition 19 Base Year Value Transfer Guidance).

If a claimant realizes late that the three-year window is close to expiring, filing anything, even a preliminary claim without every attachment, protects the on-time date. The assessor will follow up for missing paperwork. What cannot be recovered is a missed filing date.

The one-year homeowners' exemption filing

The homeowners' exemption is separate from the Prop 19 claim, but the two work together. The homeowners' exemption on the replacement home should be filed with the county assessor within one year of the transfer of the base year value. This is the standard proof that the replacement is a principal residence, which is a section 69.6 eligibility requirement.

The exemption is small on its own: it reduces the assessed value of an owner-occupied principal residence by $7,000 for California property tax purposes (source: California Board of Equalization, Homeowners' Exemption). The Prop 19 base year value transfer is the larger benefit, but the exemption anchors principal-residence status.

A claimant who qualifies for the Disabled Veterans' Exemption under Revenue and Taxation Code section 205.5 can file that in place of the homeowners' exemption. Either exemption satisfies the principal-residence requirement in section 69.6 for the replacement home.

How to file a Prop 19 base transfer claim, step by step

The steps below reflect the standard filing path for a 55-and-older claim on Form BOE-19-B. The path for BOE-19-D and BOE-19-V is nearly identical, with the added attachments each form requires.

1. Confirm the qualifying category. Age 55 or older on the date of sale, severely and permanently disabled, or a victim of a Governor-proclaimed disaster. Pick the matching form: BOE-19-B, BOE-19-D, or BOE-19-V.
2. Gather the two dates and the two values. Sale date and full cash value of the original home; purchase or completion date and full cash value of the replacement.
3. Confirm the two-year window is intact. The sale and the purchase or completion must fall within two years of each other, either direction.
4. Download the correct form from the county assessor of the replacement home. Every California county publishes BOE-19-B, BOE-19-D, and BOE-19-V on its website.
5. Complete the form. Fill in claimant information, both properties, the qualifying category, the qualifying date of birth or disability certification, and the requested attachments.
6. File the claim within three years of the replacement's purchase or completion. Filing on time secures a retroactive base year value transfer to the acquisition date.
7. File the homeowners' exemption on the replacement within one year of the transfer. The exemption is proof of principal-residence status and protects the claim.
8. Keep a copy of the claim, the recorded deed, and the tax bill. The assessor may follow up for supporting documents. Retain records for at least four years after the transfer is granted.

The Prop 19 forms and where to download them

The table lists the three BOE forms that implement section 69.6, along with the qualifying category, the filing target, and the sample-form URL.

Sources: California Board of Equalization, Proposition 19 forms page and sample PDFs; California Revenue and Taxation Code sections 69.6 and 218. Checked August 2026.

A worked timeline for a typical 55-and-older claim

The timeline below walks through a straightforward, on-time filing on Form BOE-19-B. Numbers are illustrative; the sequencing and deadlines come from section 69.6.

County-level variations you may see

Section 69.6 is statewide law, but each of the 58 California county assessors administers it locally. The form is the same everywhere; a few practical details do vary.

• Supplemental sheets. Some large-county assessors (for example Los Angeles, San Francisco, and Santa Clara) attach a local claim-status sheet or a supplemental disclosure to the BOE form. It is not a separate legal step; it is a county intake convenience.
• Online submission. Several counties accept an uploaded PDF; others require paper filing by mail or in person. Los Angeles County posts the Prop 19 filing instructions on the LA County Assessor Proposition 19 page.
• Recording versus filing. The claim itself is a confidential document filed with the assessor. It is not recorded with the county recorder. The recorded documents that matter for a claim are the deed on the original sale and the deed or certificate of occupancy on the replacement.
• Processing time. Most counties resolve straightforward claims in 3 to 6 months. Contested claims (for example, category questions, or replacement-value disputes) can take longer.
• Assessor equalization. If the original and replacement counties are different, the two assessors coordinate to confirm the factored base year value. The replacement county assessor is the authority for granting the transfer.

If a county's website posts a different filing address or an added attachment list, follow that county's instructions. The core BOE form and the statutory deadlines do not change (source: BOE, Proposition 19 FAQs).

When a rushed Prop 19 filing is a bad idea

A balanced page names when the deadlines argue for slowing down, not speeding up. A Prop 19 claim uses one of three lifetime slots for age-55-or-older claimants; the disabled category is capped at the same three uses (section 69.6). A wasted filing is a wasted slot.

• The original home was never a principal residence. Rentals, second homes, and vacation properties do not qualify. Filing anyway wastes assessor time and starts a paper trail you may have to correct.
• The two-year window has already closed. A claim that documents a sale-to-purchase gap greater than two years will be denied; do not file to reset the clock, because there is no reset.
• The replacement is far more expensive than the original. The excess above the adjusted threshold is added to the transferred factored base year value, so most of the tax saving evaporates. Weigh whether a lifetime slot is worth using.
• You may need to move again within a few years. Each move uses one of three slots. If a downsizing move is likely to be followed by another (for care, family, or a smaller home), keep at least one slot in reserve.
• You are planning to leave California. The base year value transfer is statewide inside California only. A move to another state does not carry a California base year value with it.
• You are counting on the parent-child exclusion. That is a different Prop 19 rule under section 63.2, with different conditions and a value cap. It is not the same rule as section 69.6, and it uses different BOE forms.

If any of these describes you, wait, get advice from a licensed California CPA or attorney, and revisit the timing later. The Prop 19 forms and deadlines reward planning; they do not reward rushing.

Prop 19 deadline and form questions, answered

How long do I have to file a Prop 19 base transfer claim?

Three years from the date the replacement dwelling was purchased or the new construction of the replacement dwelling was completed, per Revenue and Taxation Code section 69.6(c)(1). Filing inside three years secures a retroactive transfer to the acquisition date. Filing later is allowed, but relief is prospective only from the lien date of the assessment year in which the claim is filed.

Which BOE form do I file for a Prop 19 base transfer?

BOE-19-B if you are age 55 or older on the date of sale of the original home. BOE-19-D if you are severely and permanently disabled. BOE-19-V if the original home was substantially damaged or destroyed by a wildfire or other Governor-proclaimed disaster. Each form is filed with the county assessor of the replacement home.

Can I still file if I missed the three-year window?

Yes, but the relief changes. Section 69.6(c)(2) provides that a late claim is considered by the assessor and grants a prospective-only transfer, applying from the lien date of the assessment year in which the claim is filed. The transferred base year value is factored forward using the section 51 inflation factor. There is no retroactive refund for prior years.

Does the two-year window between sale and purchase count both directions?

Yes. The two-year clock runs in either direction. You can sell the original home first and purchase or newly construct the replacement within two years, or you can buy or build the replacement first and sell the original within two years. Either sequence qualifies under section 69.6, provided at least one of the two transactions is on or after April 1, 2021.

Do I have to file the homeowners' exemption separately?

Yes. The homeowners' exemption on the replacement home is a separate claim, filed on Form BOE-266 with the county assessor within one year of the transfer. It provides the $7,000 assessed-value reduction for owner-occupied principal residences under section 218 and is the practical proof of principal-residence status. A qualifying claimant may file the Disabled Veterans' Exemption in its place.

Can the Board of Equalization extend the deadlines if I am close to the cutoff?

No. The California Board of Equalization has stated that it does not have the authority to extend or change the operative dates of Proposition 19. County assessors similarly cannot extend the two-year, three-year, or one-year windows. If a filing deadline is close, file a preliminary claim to protect the date and follow up with any missing attachments.

If my replacement is in a different California county, which assessor takes the claim?

The county assessor of the replacement home. Since April 1, 2021, Prop 19 base year value transfers are statewide, and the replacement county assessor administers the claim. The two counties coordinate to confirm the factored base year value that transfers from the original. Prior county-by-county acceptance rules under Propositions 60 and 90 no longer apply to sales on or after April 1, 2021.

Does using a Prop 19 base transfer help with California income tax or federal taxes?

No. Proposition 19 changes the local property tax base year value on the replacement home. It has no effect on California state income tax, on federal income tax, on Internal Revenue Code section 121 capital-gains treatment of the home sale itself, or on any retirement-account rule. Those are separate tax systems; consult your tax advisor for your specific situation.