Is My HCAD Appraisal Too High? Check Free

If you own a home in Harris County, your property tax bill is built on a number the Harris Central Appraisal District (HCAD) assigns your house every year: the appraised value. If that number is higher than what your home would actually sell for, you're paying tax on value that doesn't exist. Here's how to tell whether your appraisal is too high — and a free way to check your own record in under a minute.

What "too high" actually means

Before you can decide whether your appraisal is too high, it helps to separate the three numbers on your HCAD record, because they answer different questions:

• Market value. What your property would sell for on the open market.
• Appraised value. HCAD's estimate of market value. In Harris County the appraised value is set at 100% of market — there is no fractional assessment like some states use. So if HCAD's appraised value sits above what your home would really sell for, that gap is real money: you're paying tax on it every year.
• Taxable value. The number your bill is actually computed from — appraised value minus your exemptions. Exemptions are already working for you here; a protest fights the market side of the equation, not the exemption side.

If the terms market value and appraised value look like they should be the same thing — they're supposed to start that way. The longer story — how they drift apart, why your notice shows both, and what the 10% homestead cap does to the gap — is on our HCAD market vs. appraised vs. taxable value explainer (page planned; builds later). The one-sentence version: "too high" means your appraised value is above the market evidence, and the only way to test that is with comparable sales.

How HCAD values your home

HCAD uses the three standard valuation approaches: sales comparison (recent sales of similar homes), cost (what it would take to rebuild your home), and income (for rental and commercial properties). For most single-family homes, the sales-comparison approach drives the number.

But HCAD is a mass appraisal operation. It values roughly 1.8 million properties in Harris County every year, and it does that by grouping homes into neighborhoods and applying typical neighborhood characteristics. Mass appraisal is good at averages and bad at exceptions. Your home's actual condition, its lot, its layout, a renovation, an awkward floor plan — the details that move a real sale price by thousands of dollars — don't always make it into a neighborhood-level formula. That is exactly why individual homes end up over- or under-valued relative to the market, and it's why the annual protest process exists.

The important thing to understand: HCAD's appraised value is an opinion. A data-backed opinion, but still an opinion — and Texas law gives you a formal, no-lawyer-required way to challenge it when the opinion runs ahead of the market.

The free check: what it shows

You can look up your record on HCAD's own property search, but the raw numbers don't tell you whether they're fair. Our free check pulls the same official HCAD record — straight from the county's public appraisal data — and explains what each number means for you, in plain language.

Your three values, side by side

Market, appraised, and taxable values shown separately — because they are not the same number, and which one changed tells you a different story. If your appraised value has crept above the neighborhood context HCAD itself records, that's a signal worth a closer look.

Exemptions on your account

The check shows which exemption codes are on your record: the residence homestead (RES) — which for 2026 removes $100,000 of a home's value from school taxes, and more where the county and city opt in — the over-65 (OVR) and disability (DIS) exemptions, and others. If you own and live in your home and don't have a homestead on record, that's usually the first thing to fix: the homestead is also what activates your 10% cap, and missing it can cost more than most appeal wins.

The 10% cap flag

For homesteaded properties, Texas law caps appraised-value growth at no more than 10% per year, even when the market jumps far more. The check tells you whether the cap is active on your account. This matters both ways: a capped home can sit well below market (nothing to protest), and a capped home can also sit above a market that has since softened (exactly what a protest is for).

Effective-rate estimate

Your likely all-in rate — computed from your account's taxable values and HCAD's proposed 2026 district rates. Harris County's typical effective rate is roughly 2.0–2.4% of appraised value (an estimate, not a bill). At that rate, every $10,000 of appraised value a successful appeal removes saves about $200 a year — every year, until values change again.

The honest verdict

Finally, the check gives you a plain-spoken recommendation on whether an appeal looks worthwhile. When fewer than three comparable sales qualify for your neighborhood, we say so — "insufficient comparables" — instead of inventing a number. And when the record shows your value is fine, we tell you that too. The check is built to say "don't appeal" when that's the truth. Most protest services would rather you never hear that sentence.

When your appraisal is probably NOT too high

A few honest situations where the right answer is to leave the appraisal alone:

• Your value is at or below what similar homes are selling for. If the market evidence supports HCAD's number, there is nothing to protest.
• Your homestead cap has your appraised value below market. A capped home can be years behind the market — great for your taxes, and nothing to fight.
• There aren't enough recent sales in your area to make a case. Three solid comparable sales are the practical minimum for a credible protest. Fewer than that, and the argument is thin no matter how well you make it.
• The difference is small. If the gap is a few thousand dollars, the annual saving is small enough that your time is better spent elsewhere.

Many homes are not over-assessed — possibly most. Filing a protest you can't support wastes an afternoon and goes nowhere; filing when your value is already low is pointless by definition. The free check will happily tell you this. That's not a bug; it's the point.

When it probably IS worth protesting

The signs that an appeal is genuinely worth your time:

• Your appraised value jumped sharply year over year — the classic notice-trigger — especially if you don't have the homestead cap slowing the rise.
• Your value sits clearly above recent sales of similar homes in your own subdivision — the strongest possible signal, because same-subdivision sales are the evidence that moves HCAD.
• Your home has real, documentable issues a mass appraisal didn't catch — condition problems, an awkward layout, lot issues — the exceptions mass appraisal is bad at.
• Your neighborhood's sales have softened while appraised values kept climbing — values can drift above market slowly, without any single dramatic jump.

One honest caveat about the free check itself: HCAD's public bulk records don't include sale prices, so the free check compares your appraised value against the neighborhood context in HCAD's own records — not against actual recent sales. That means a green light from the free check is a "worth looking closer" signal, not a guarantee of savings. The evidence that actually moves an HCAD value is recent, deed-verified comparable sales — and that's exactly what the paid analysis supplies. More on that in a moment.

What to do next

1. Check your numbers free. The moment you wonder whether your appraisal is too high — not the week of the deadline. You don't need to wait for a paper notice; your HCAD record is public all year.
2. Watch for the notice. HCAD mails Notices of Appraised Value around April. The notice shows last year's value, the proposed value, and the change — the official starting gun of protest season.
3. Get sales evidence if there's a case. Three or more recent, arm's-length, deed-verified sales of similar homes. If you can't find three, the honest conclusion may be not to protest.
4. File before the deadline. The protest deadline for the 2027 season is May 15, 2027 (or 30 days after your notice, whichever is later — for most homeowners, May 15). Filing online through HCAD iFile costs nothing and commits you to nothing. The full playbook is in our how to protest your Harris County property taxes guide; the deadline fine print is on our Harris County property tax protest deadline page.

Frequently asked questions

Estimates from official public records, not guarantees. Not legal or appraisal advice. HCAD's proposed 2026 rates are estimates, not a bill. We can't confirm over-assessment from free public records alone — the free check is a first read, not a verdict.

Educational information about Texas and Harris County property tax protests. Not legal, tax, or appraisal advice. Savings figures are estimates, not guarantees. Verify deadlines and procedures with HCAD (hcad.org) before acting.

Last updated: August 16, 2026