What is my Florida home worth? Four numbers, and only one of them is the price

Why do I get four different numbers?

Because they answer four different questions, and only one of them is “what would someone pay for this next month”.

None of them is wrong. Using the wrong one is what costs money — pricing a listing off the county’s figure, or budgeting a purchase off an automated estimate.

Why is the county’s value so much lower than the market?

Because Florida law caps how fast it can rise. If you have a homestead exemption, your assessed value cannot increase by more than 3% a year — however far the market runs.

That is the Save Our Homes cap, and it is deliberate. Over a decade of rising prices it opens a large, permanent gap between what your home is worth and what you are taxed on. On a home bought in 2015 the difference can be hundreds of thousands of dollars.

Three consequences that matter:

• The county’s number is useless for pricing a sale. It is a tax figure and it was designed to lag.
• It resets when the property sells. Which is why a buyer’s tax bill has nothing to do with the seller’s — the most expensive misunderstanding in Florida real estate.
• On a rental or second home the cap is 10%, not 3%, so the gap is smaller and the assessed value tracks the market more closely.

How accurate are the online estimates?

Good at the middle of a homogeneous market, poor at the edges — and Florida has a lot of edges.

An automated model works by finding similar recent sales and adjusting statistically. It performs well on a subdivision of near-identical houses with steady turnover. It performs badly on:

• Waterfront. Direct ocean, intracoastal, canal with ocean access and lake view are four different products, and the model frequently cannot tell them apart.
• Condominiums, where the line, the floor and the view can change value by 40% inside the same building.
• Renovated versus original. The model does not know you replaced the kitchen, the roof and the windows.
• Thin markets. Few recent comparable sales means the estimate is extrapolating.

Use them as a starting range, not as a number. And remember what they are for: portals publish estimates to capture the homeowner who is curious about their equity.

What does an appraiser actually do?

Produces a defensible opinion of value for the lender, using recent closed sales — and their job is to protect the loan, not to confirm your price.

The process: inspect the property, select three to six comparable closed sales, adjust each one for differences, and reconcile to a single figure. On residential property the sales comparison approach dominates; cost and income approaches appear as support.

Why it matters to you: if the appraisal comes in below the contract price, the lender lends against the lower figure. The buyer covers the difference in cash, you renegotiate, or the deal ends. In condominium buildings with recent distressed sales this happens more often than sellers expect.

Two Florida-specific items an appraiser will note and a homeowner rarely thinks about: the age of the roof and whether the windows are impact-rated. Both feed insurability, and insurability feeds financeability.

How is market value really determined?

By what similar homes actually closed at in the last ninety days, adjusted for how yours differs — and by what a buyer can compare you against this weekend.

A real valuation weighs three things:

• Closed sales, last 90 days. The foundation. Older data describes a market that no longer exists.
• Active listings. Your competition. A buyer is not comparing your home to what sold in March — they are comparing it to the four homes they can see on Saturday.
• Pending sales. The leading indicator. What went under contract in the last three weeks tells you where the market is going before the closed data catches up.

Then the adjustments: square footage, bedroom and bathroom count, lot, age, condition, view, garage — and in Florida, roof age, impact windows, and whether the association is healthy.

What raises value in Florida, and what doesn’t?

The things that make the home cheaper to insure and safer to lend on. Not the things that photograph well.

The logic is consistent: in Florida, the buyer’s monthly payment is dominated by taxes and insurance. Anything that lowers the insurance line raises what a buyer can pay for the house — which is a more direct route to value than anything cosmetic.

How much does condition versus location matter?

Location sets the range. Condition decides where in the range you land, and how fast.

You cannot renovate your way out of a ZIP code, and you cannot fix a busy road. What condition does is determine whether you sell at the top or the bottom of what your location supports — and in a market where the South Florida median is 80 days on market, it also determines whether you sell in six weeks or five months.

Within condition, Florida has its own hierarchy. A dated but well-maintained house with a new roof and impact windows will often outsell a beautifully renovated one with a 20-year-old roof, because the second is harder to insure and harder to finance.

When should I get a real valuation?

Earlier than you think, and not only when you are selling.

• Before you list — obviously, and at least a month before, so there is time to act on what it tells you.
• Before you refinance, so you know whether the equity supports it.
• To challenge your assessment. If the county’s just value looks wrong, the TRIM notice in August is your window, and the deadline to petition is short and printed on it.
• For an estate, a divorce or a partnership. These need a formal appraisal, not a market opinion.
• Every few years, if you are simply holding. Your insurance coverage should match the cost to rebuild, and in Florida rebuilding costs have moved faster than most policies have been updated.