Is Your Home Over-Assessed? 5 Signs You're Overpaying

Your Property Tax Bill Might Be Wrong

Every year, the Harris County Appraisal District (HCAD) determines the appraised value of your home. That value is what your property taxes are based on. When the appraised value is accurate, you pay your fair share. But when it's too high — when the county says your home is worth more than it really is — you're overpaying on your taxes.

The good news is that Texas law gives you the right to challenge that number. Under Texas Tax Code Section 41.44(a)(1), you can protest your property's appraised value if you believe it exceeds the actual market value of your home.

But first, how do you know if your home is over-assessed? Here are five signs to watch for.

Sign 1: Your Appraised Value Jumped Up, But Nothing Changed

Did your appraised value go up significantly this year, even though you haven't made any improvements to your home? No new kitchen. No added bathroom. No pool. Nothing.

This is one of the most common signs of over-assessment. HCAD uses broad market data and computer models to set values, and sometimes those models overestimate what's happening on your specific street or with your specific property. A big increase with no corresponding improvement is a red flag.

Look at your appraisal notice and compare it to last year's value. If the jump doesn't match reality, it's worth investigating.

Sign 2: Homes in Your Neighborhood Are Selling for Less

This is the strongest indicator. If similar homes near you — homes with the same number of bedrooms, similar square footage, built around the same time — have recently sold for less than your appraised value, you have solid grounds for a protest.

These recent sales are called comparable sales (or "comps"), and they are the single most powerful piece of evidence in a property tax protest. The appraisal district uses them to set your value, and you can use them right back to argue that value is too high.

Here's what to look for:

Sales within the last 6-12 months
Homes within a mile or two of yours
Similar size, age, and condition
Sale prices below your current appraised value

If you can find three to five good comps that sold for less than what the county says your home is worth, you have a strong case.

Sign 3: Your Property Record Has Errors

HCAD maintains a property record card for every home in the county. It lists details like square footage, number of bedrooms and bathrooms, lot size, year built, and features like a pool or garage.

If any of this information is wrong, you could be over-assessed. Common errors include:

Square footage listed as larger than your home actually is
Extra bedrooms or bathrooms that don't exist
Features listed that you don't have (a fireplace, a covered patio, a second garage)
Wrong year built or wrong construction type

You can look up your property record on the HCAD website at hcad.org. Compare what they have on file with what you actually have. If something doesn't match, that's a problem — and a protest opportunity. Our rundown of the most common property tax appraisal errors shows exactly which mistakes drive values up the most.

Sign 4: Your Home Has Issues the Appraisal Doesn't Reflect

The appraisal district often doesn't know about problems with your home unless you tell them. If your home has any of the following, the appraised value might be too high:

An aging or damaged roof that needs replacement
Foundation issues — cracks, settling, drainage problems
Outdated interior — old kitchen, old bathrooms, worn carpeting
Flood damage or water intrusion history
Needed repairs that would cost thousands to fix

A home with a 25-year-old kitchen and a cracked foundation is not worth the same as a similar home that's been recently updated. But the appraisal district may be treating them the same. If your home's condition is below average for your neighborhood, your value should reflect that.

Take photos. Get repair estimates if you have them. These make excellent supporting evidence in a protest.

Sign 5: You're Paying More Than Your Neighbors for a Similar Home

Talk to your neighbors — or look up their appraised values on the HCAD website. If your home is appraised significantly higher than similar homes on your street, something may be off.

Texas law requires equal and uniform appraisal. That means similar properties should be valued similarly. If your home at 1234 Oak Street is appraised at $320,000 but the nearly identical home at 1240 Oak Street is appraised at $280,000, that's an inequity — and it's a valid reason to protest.

This is called a protest on the grounds of unequal appraisal, and it's a separate legal basis from protesting market value. Some homeowners file on both grounds to give themselves the best chance.

What Should You Do Next?

If any of these signs apply to you, here's your game plan:

Check your appraisal notice as soon as it arrives (usually in April)
Review your property record on hcad.org for errors
Look at recent sales near your home
File your protest before the deadline — May 15, 2026, or 30 days from your notice date, whichever is later
Prepare your evidence — comps, photos, repair estimates, corrected property details

You don't have to figure all of this out alone. There are tools and services designed to help you identify whether you're over-assessed and build a strong case. If you just bought your home, our first-time homeowner appeal guide walks through exactly what to do in your first year.

Don't Let Another Year Go By

Every year you don't protest an over-assessment is another year of paying more than you should. For seniors on fixed incomes, those extra dollars matter. And once you get your value corrected, the savings carry forward into future years.

Visit claimengine.org for a free, instant analysis of your property. Just enter your address, and we'll show you whether your home appears over-assessed, what comparable sales suggest your home is worth, and how much you could save. No cost, no obligation — just the information you need to make a smart decision.

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