Prop 19 Filing Guide for Los Angeles County

To claim a Proposition 19 benefit on a Los Angeles County property, you file with the Los Angeles County Office of the Assessor. Use BOE-19-B to move your tax base to a replacement home if you are 55 or older. Use BOE-19-P or BOE-19-G plus BOE-266 to claim an inherited family home. The county reaches you at (213) 974-3211 and posts every form at the assessor’s forms page.

Los Angeles County assesses more parcels than any other county in the country. That scale shapes what filing here feels like. You have more places to file in person than almost anywhere else in California, and you have less room to assume anyone will chase you for a missing document.

Which Form Do You File?

Proposition 19 gives you two different benefits. They use different forms, and picking the wrong one wastes weeks.

You are moving to a new home. File BOE-19-B if you are 55 or older. File BOE-19-D with BOE-19-DC if you are severely and permanently disabled. File BOE-19-V if a wildfire or a Governor-declared disaster destroyed your home.

You inherited a home. File BOE-19-P for a parent-to-child transfer, or BOE-19-G for a grandparent-to-grandchild transfer. File BOE-266 as well, because the exclusion requires you to claim the homeowners’ exemption on the inherited home.

Every one of these forms sits on the Los Angeles County assessor’s forms page. Download the form, complete it, and mail or deliver it. The county accepts an online submission for BOE-266, but not for the Proposition 19 claim forms themselves.

Where to File in Los Angeles County

File with the assessor of the county where the property sits. For an inherited home, that is Los Angeles County if the home is here. For a base year value transfer, that is the county of your replacement home, not the county you sold in.

This distinction catches movers constantly. If you sell in Los Angeles County and buy in Ventura County, your BOE-19-B goes to Ventura County. If you sell in Orange County and buy in Los Angeles County, it comes here.

The main office is downtown at 500 W. Temple Street, Room 225. Los Angeles County also runs branch offices in South El Monte, Signal Hill, Culver City, Beverly Hills, Lancaster, and at the Castaic Library. The Sylmar office is closed. The county publishes a district office finder that tells you which office handles your parcel.

The Deadlines That Decide the Outcome

Three clocks run, and they run at different speeds.

One year, for an inherited home. You must occupy the home as your principal residence and file BOE-266 within one year of the date of death. This is the deadline that most often destroys the benefit, because families wait for probate to finish. Los Angeles County probate routinely runs longer than a year. Move in and file on the date-of-death clock, not the probate clock.

Three years, for the exclusion claim. File BOE-19-P or BOE-19-G within three years of the transfer, or before the home is sold to someone outside the family, whichever comes first. For a base year value transfer, file BOE-19-B within three years of buying or completing the replacement home.

Two years, for the move itself. Your sale and your purchase must fall within two years of each other. The order does not matter.

Six months, if a notice arrives. After a transfer the county often issues a supplemental assessment. A claim still counts as timely if you file it within six months of that notice.

Finding Your Factored Base Year Value

Almost every Proposition 19 calculation starts with your factored base year value, and almost nobody knows theirs.

It is not the price your parents paid. It is that price plus decades of inflation adjustments capped at two percent a year, plus the assessed value of improvements.

Look it up on the Los Angeles County assessor’s property portal. Search by address or by Assessor’s Identification Number, which is the AIN printed on your tax bill. The figure appears as the assessed value or net taxable value. Your annual tax bill carries the same number.

What Los Angeles County Does Differently

The county is enormous, and the branch network reflects that. Most California counties have one office. Los Angeles has a main office plus six branches spread from Lancaster to Signal Hill. If a downtown trip is impractical, find your district office first.

Online filing stops at the homeowners’ exemption. The county accepts BOE-266 through its e-file page. It does not accept BOE-19-B, BOE-19-P, or BOE-19-G that way. Plan for paper on the claim itself.

Disaster claims have their own contact path. After the wildfires of recent years, the county maintains a calamity and disaster contact page separate from its general inquiry line. If you are filing BOE-19-V, start there.

A Worked Example

A parent dies owning a home in Whittier. The factored base year value is $180,000. The market value on the date of death is $1,050,000. One adult child inherits it and moves in within eight months.

The value limit is $180,000 plus $1,044,586, which is $1,224,586. The home is worth less than that, so nothing is reassessed.

• Taxable value with the exclusion: $180,000, or roughly $1,800 a year at one percent.
• Taxable value without it: $1,050,000, or roughly $10,500 a year.

The exclusion saves this family about $8,700 every year, and the saving grows as the alternative base grows. It survives on two acts: moving in inside twelve months, and putting BOE-19-P and BOE-266 in front of the assessor.

Change one fact and the outcome inverts. If the child keeps the home as a rental instead of living in it, the exclusion does not apply, the county reassesses to $1,050,000, and the annual bill rises by roughly $8,700 permanently.

Mistakes That Cost Los Angeles Families the Exclusion

Waiting for probate. The one-year clock starts at the date of death and does not pause for the court.

Filing in the wrong county after a move. A base transfer goes to the county of the replacement home.

Assuming the assessor will prompt you. Los Angeles County processes an immense volume of transfers. No reminder is coming.

Using the original purchase price in the math. Pull the factored base year value from the county portal instead.

Treating a rental as if it qualifies. Proposition 19 covers a family home the heir occupies, and a family farm. Nothing else.

Summary

• File Proposition 19 claims for Los Angeles County property with the Los Angeles County Office of the Assessor at (213) 974-3211.
• Use BOE-19-B, BOE-19-D, or BOE-19-V to move a tax base, and BOE-19-P or BOE-19-G plus BOE-266 for an inherited home.
• A base year value transfer is filed in the county of the replacement home, not the county you sold in.
• An heir has one year from the date of death to move in and file the homeowners’ exemption, and three years to file the exclusion claim.
• The county accepts online filing for BOE-266 only, so plan on paper for the claim forms.
• Find your factored base year value on the county’s property portal before running any numbers.
• Six branch offices serve the county, and the district office finder tells you which one handles your parcel.

Get Your Los Angeles County Filing Right

Talk to Bart. If you are inheriting a Los Angeles County home or planning a move that carries your tax base with you, Bart Hubbard can walk you through what to file and when. Reach out at Prop19Hero.com.

Read the book. Prop 19 Hero covers the filing process, the deadlines, and the traps that void the exclusion before the arithmetic ever matters. Find it on Amazon.