Your Appraised Value and Your Assessed Value Are Not the Same Number

Why Does Your House Have Three Different Values?

The envelope shows up in August and it ruins somebody s afternoon every single year. TRIM notice, from the county property appraiser. You open it, you find a number next to your address, and the number does not match what you think your house is worth, does not match what Zillow says, and does not match what you paid.

So you call somebody. Usually me. And the answer is not satisfying at first, because the answer is that all three numbers are correct and none of them are measuring the same thing.

The Four Numbers, In Plain Terms

Market value. What the house would sell for right now in an arms-length sale. This is what a real estate agent estimates with a comparative market analysis and what a licensed appraiser determines in a formal appraisal for a lender.

Just value. The county property appraiser s own estimate of market value as of January 1 of that tax year. It is a mass-appraisal figure, generated for thousands of properties at once using models, sales data and property characteristics. Nobody walked your lanai.

Assessed value. Just value adjusted downward by any assessment limitation you qualify for. For homesteaded property in Florida, the Save Our Homes cap limits how much your assessed value can rise in a year regardless of what the market did.

Taxable value. Assessed value minus your exemptions. This is the number your millage rate actually gets applied to.

Why the Gap Gets Enormous Over Time

This is the part that surprises people moving here from states without an assessment cap.

Once you have homestead exemption on a Florida property, Save Our Homes limits annual increases in your assessed value. In a market where actual values climbed hard for several years running, the cap compounds in your favor. Somebody who bought in Nocatee or Julington Creek a decade ago and homesteaded it can be sitting on an assessed value dramatically below what their neighbor s identical house just sold for.

Which creates the situation that confuses every out-of-state buyer who looks at a public tax record. You pull up the county site, see what the current owner pays in property tax, and budget for that number. Then you buy the house, the homestead cap resets, and your tax bill is substantially higher than theirs was. Same house. Same street. Very different bill.

That reset is the single most common unpleasant surprise in Northeast Florida real estate for relocating buyers. It is entirely predictable and entirely avoidable if somebody tells you about it first.

Portability Changes the Math If You Already Own Here

If you are moving within Florida, from a Nocatee home to something in Ponte Vedra Beach for example, you may be able to carry a portion of your accumulated Save Our Homes benefit to the new property. Florida calls this portability, there are limits on the amount and a window of time to claim it, and it is claimed through the county property appraiser rather than automatically.

For a within-Florida mover with significant equity and a long ownership history, this is not a footnote. It can be one of the larger line items in the decision, and it is the reason a Florida-to-Florida move sometimes pencils out better than the raw price difference suggests.

The details are specific and the deadlines are real, so this is a conversation for the property appraiser s office and, depending on your situation, a tax professional. My job is to make sure you know the mechanism exists before you list.

When the Assessed Value Actually Matters to a Deal

Most of the time, it does not. Buyers and lenders care about market value. But there are three moments where the county number moves a transaction.

The first is buyer budgeting, as above. The second is when a buyer or their agent mistakes the assessed value for a market opinion and uses it to argue price. That happens, and it is a misunderstanding rather than a negotiating position, because assessed value is a tax figure that intentionally lags the market.

The third is the appeal process. If the county s just value for your property is genuinely out of line with market reality, Florida counties have a petition process through the Value Adjustment Board with a filing deadline after the TRIM notice goes out. It is a real remedy and it does get used, particularly on properties with unusual characteristics that a mass-appraisal model handles badly.

What Drives Each Number Differently

A market appraisal responds to condition, finish level, view, the specific lot and what comparable homes actually closed at in the last several months. It is sensitive to the things a buyer walks through.

A county just value responds to square footage, year built, lot size, neighborhood and recorded sales in aggregate. It is much less sensitive to whether you renovated the kitchen or whether your lot backs to preserve, because a model cannot see that.

Which is why two houses on the same street in Shearwater can carry nearly identical assessed values and sell twelve percent apart. The county is not wrong. It is answering a different question.

What This Means for Sellers

Do not price off your tax bill in either direction. A low assessed value does not mean your house is worth less, and a high one does not mean it is worth more.

What you should do is know the number, because buyers will find it, and be ready to explain the homestead reset when a relocating buyer asks why their estimated taxes are higher than yours. A seller who can explain that clearly looks like someone who knows what they own. A seller who gets defensive about it creates doubt where there was none.

Frequently Asked Questions

Why is my assessed value lower than what I could sell my house for?

If the property is homesteaded, Florida s Save Our Homes cap limits how fast the assessed value can rise, so in a period of strong appreciation the assessed value falls behind market value. That gap is working in your favor.

Will my property taxes change when I buy a home in St. Johns County?

Almost certainly. The prior owner s accumulated assessment cap does not transfer to you, so the property is reassessed and your bill is typically different from theirs. Budget from an estimate built for your situation, not from the current tax record.

Does a higher appraisal raise my property taxes?

A private appraisal for a lender does not report to the county and does not directly change your assessment. The county property appraiser sets just value through its own process.

Can I dispute the county s value?

Yes. Florida counties provide an appeal path through the Value Adjustment Board, and there is a deadline tied to the TRIM notice. Many appraiser offices will also discuss an obvious factual error informally before a formal petition is needed.

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What To Do Right Now

If you are relocating and building a budget, get an estimate of what you would pay in property tax rather than what the seller pays. Those two numbers can be far enough apart to change which house you buy.

Call or text Joey Larsen at 904-863-6679, or visit RetireMeToFlorida.com to get started.