Plenty of California seniors are sitting on some of the best property tax deals in America without knowing how deep they go.

Some of the breaks are automatic. The best ones aren’t.

They wait in a county office for an application that never comes, year after year.

These are the California property tax breaks going unclaimed, and what each one takes to grab.

Note: This is general information, not tax or legal advice. Amounts, income limits, and deadlines change yearly and can vary by county. Confirm current details with your county assessor, the State Controller, or a tax professional before counting on any single break.

Take Your Tax Bill With You

The biggest property tax break in California works like a moving van for your tax bill.

Under Proposition 19, homeowners 55 and older can sell their house and carry their old, low assessed value to a replacement home anywhere in the state.

Bought your place decades ago?

Your taxable value might be a fraction of what the house sells for today.

Prop 19 lets you keep that tiny tax base when you downsize to San Diego, move near the grandkids in Sacramento, or finally escape to the coast.

The replacement home can cost any amount.

Buy something pricier than what you sold, and only the difference gets added to your transferred value.

File form BOE-19-B with your new county. The deadline rules reward filing within three years, so don’t sit on it.

You Get Three Moves, Not One

Here’s the detail even savvy seniors miss. The old law allowed one transfer in a lifetime.

Prop 19 allows three.

Move at 60, again at 70, once more at 80 if life demands it.

The low tax base rides along every time.

That changes the math on trying a new town. A move that doesn’t work out no longer burns your only ticket.

Plenty of seniors stay frozen in houses that stopped fitting them years ago, guarding a tax base they think they’d lose.

The Property Tax Postponement Program, run by the State Controller, covers the bill for homeowners 62 and older, or blind, or disabled.

The deferred taxes become a lien, repaid when the home sells or changes hands.

Until then, you keep your cash.

The requirements: household income at or below $55,181 for the current cycle, at least 40 percent equity, and no reverse mortgage. The income limit adjusts each year.

Applications run in cycles, and funds are limited, so the early filers win.

Call the Controller’s office at 1-800-952-5661 to catch the next window.

For a house-rich, cash-poor senior, this is the difference between budgeting around a tax bill and never seeing one again.

The $7,000 Freebie

The Homeowners’ Exemption knocks $7,000 off your assessed value. It saves about $77 a year.

Small money. So why is it on this list?

Two reasons.

First, it’s free, permanent, and takes one form, BOE-266, filed once with your county assessor. It renews on its own forever. Huge numbers of eligible owners never file it.

Second, the exemption matters for bigger things. Prop 19 transfers require the home to qualify for it. And heirs who inherit a home must file it within one year to keep a parent’s low tax base.

Seventy-seven dollars a year, forever, for five minutes of paperwork.

And a key that unlocks the larger doors.

The Parcel Tax Escape Hatch

Look at your tax bill. Below the regular tax sits a stack of parcel taxes, the flat charges from school districts and local measures.

Here’s what the bill doesn’t mention: Many school districts exempt homeowners 65 and older from their parcel taxes entirely.

These exemptions can run several hundred dollars a year, sometimes more in districts with multiple measures.

The catch is brutal in its simplicity.

You must apply directly to each district, and some require you to reapply every single year.

No application, no exemption, and no refund for the years you missed. Call your school district’s business office and ask.

It’s easily the most unclaimed money on this list.

The Veteran Exemption That Dwarfs the Rest

California’s Disabled Veterans’ Exemption makes the $7,000 version look like a rounding error.

Veterans rated 100 percent disabled, or unemployable at that level, can exempt well over $150,000 of their home’s value.

Low-income qualifying veterans get an even larger amount.

The figures adjust upward each year, and surviving spouses can keep the exemption.

A 75-year-old vet paying full property taxes in California may be leaving four figures on the table annually.

One application with the county assessor, plus the VA rating letter, fixes that.

The Disaster Do-Over

Prop 19’s moving benefit has a second track that skips the age requirement entirely.

Lose your home to a wildfire or a governor-declared disaster, and you can transfer your old tax base to a replacement home anywhere in California, at any age.

Severely disabled homeowners get the same door, also without waiting for 55.

After the fires of recent years, thousands of households qualify for this and don’t know it.

If disaster touched your home, your low tax base survived the flames. Claim it.

Ask for the Market-Drop Discount

When home values fall, your assessment is supposed to fall with them. The county doesn’t always volunteer.

Under the state’s decline-in-value rules, you can request a review if your home’s market value drops below its assessed value.

The assessor must temporarily lower your taxable value to match the market.

It costs nothing to ask. Most counties have a simple form, and the review window opens every year.

Seniors who bought near a market peak should check this one annually.

A soft year in your zip code is a discount waiting for a raised hand.

The Inheritance Move Your Kids Need to Know

This one’s for your children, and the clock on it is unforgiving.

When kids inherit a parent’s home under Prop 19, they can keep the parent’s low tax base only if the home becomes their primary residence, and only if they file the homeowners’ exemption within one year.

Miss the window, and the home reassesses at market value.

On a longtime California home, that can multiply the tax bill several times over.

One conversation at Sunday dinner protects decades of your Prop 13 savings. Have it this week.

The Break You’re Already Getting

The foundation under everything is Proposition 13, and longtime owners forget how much it’s worth.

Your assessed value can only grow 2 percent a year, no matter what the market does.

A home bought in the 1990s for $180,000 might carry an assessed value of around $290,000 today, even if it would sell for $1.4 million.

You’re taxed on the small number.