How to Read Your HCAD Notice of Appraised Value

The notice is not your tax bill. It is HCAD's estimate of your property's worth, which your school district, the county, and other taxing units will use to calculate what you owe later in the year. If you disagree with the value, you have a legal right to protest — but you must act before the deadline printed on the notice.

What Is the HCAD Notice of Appraised Value?

The Harris Central Appraisal District (HCAD) is the government agency responsible for estimating the value of every property in Harris County as of January 1st each year. They do not set your tax rate or collect your taxes — their only job is to establish the appraised value that all taxing units use as their starting point.

Every property owner receives a notice each spring. For most residential properties, notices are mailed between March 1st and April 15th. Harris County law requires HCAD to deliver notices at least 15 days before the protest deadline, which is generally May 15th.

The notice is also your invitation to act. Printed on it are your account number, your iFile number (needed to file online), and the exact date by which you must protest if you believe the value is wrong.

Section-by-Section Breakdown

Here is what each line on the notice means and what to verify in each one.

What is Market Value?

This is HCAD's estimate of what your home would sell for on the open market on January 1st of the tax year. It is calculated using HCAD's Computer-Assisted Mass Appraisal (CAMA) model — a statistical system that accounts for your home's square footage, age, grade, condition score, neighborhood, and structural features.

What to check: Compare this number to what similar homes in your neighborhood have actually sold for in the past 12 months. If comparable homes sold for less, you have grounds to protest on market value. Also look up your property at hcad.org and verify that the recorded details — grade, square footage, bedroom count, foundation type — are accurate. An error in any of these fields inflates your value.

What is Appraised Value?

For homeowners with a Residence Homestead Exemption, the appraised value is subject to a 10% annual cap under Texas Tax Code §23.23. This means that no matter how much your market value increases in a given year, your taxable appraised value can only rise by 10% from the prior year.

What to check: If you purchased the home within the past year, there is no cap yet — your appraised value will equal your market value. In subsequent years, verify the cap is being applied correctly. The appraised value on your notice should be no more than 10% above what it was the previous year.

What Exemptions Should You Look For?

HCAD subtracts any applicable exemptions from your appraised value before calculating your taxable value. Common exemptions in Harris County include:

• Residence Homestead Exemption: Available to any owner who lives in the property as their primary residence as of January 1st. Reduces your taxable value and activates the 10% annual cap on appraised value increases.
• Over-65 Exemption: An additional reduction for homeowners 65 and older. Also freezes the school district portion of your tax bill, meaning your school taxes cannot increase as long as you own and live in the property.
• Disabled Veteran Exemption: A partial or full exemption based on the veteran's disability rating, ranging from $5,000 off taxable value for ratings under 30% up to a full exemption for 100% disability ratings.

What to check: Confirm every exemption you are entitled to appears on the notice. A missing Homestead Exemption is a significant and correctable error — file an application at hcad.org immediately if yours is not listed.

What About Estimated Taxes?

Some notices include an estimated annual tax bill based on the prior year's tax rates. Treat this as a rough reference only — actual rates are set later in the year by each taxing unit (your school district, the county, MUDs, and others) and may differ from the estimate.

Market Value vs. Appraised Value: What It Means for Your Bill

The distinction between these two numbers is one of the most practically important things to understand as a Harris County homeowner.

Your market value is the price HCAD thinks you could sell for today. It fluctuates with the real estate market and is recalculated every year.

Your appraised value is the number that actually drives your tax bill. For homestead owners, it can only rise 10% per year regardless of market conditions. This protection — known as the homestead cap — is one of the most valuable provisions in Texas property tax law, and it compounds over time.

Why protesting still matters even when your appraised value is capped: The cap is relative — it applies as a percentage of last year's appraised value, not of market value. But your market value creates a ceiling: your appraised value can never exceed your market value. Reducing your market value today lowers the ceiling permanently, preventing larger tax increases in future years as the cap catches up. A protest won this year is a benefit that compounds for every year you own the home.

How to Tell If Your Value Looks Too High

There are five clear signals that your HCAD market value may be inflated:

1. Your CAMA data has errors

Look up your property at hcad.org and review what HCAD has on record: grade, square footage, bedroom and bathroom count, year built, foundation type, and condition rating (CDU). A single inaccurate field — an extra bathroom that does not exist, a larger lot size than you have, or the wrong quality grade — can add tens of thousands of dollars to your assessed value. These errors are more common than most homeowners realize and are among the easiest wins in any protest.

2. Your neighbors' values are lower

If similar homes within a few blocks — comparable in size, age, grade, and features — carry significantly lower assessed values, you are being assessed unequally. Texas Tax Code §41.43 gives you the right to protest on this basis alone, without any sales data. This "equal and uniform" protest is often more powerful than a market value protest, because it holds HCAD to its own model rather than arguing about what the market would say.

3. Your value jumped disproportionately

Even if values rose across your neighborhood, a larger-than-average increase relative to comparable nearby homes is a valid protest signal. Check what happened to your neighbors' values year-over-year and compare it to your own percentage change.

4. Recent comparable sales are below your market value

If homes similar to yours — same neighborhood, similar square footage, similar age and condition — have sold for less than your HCAD market value in the past 12 months, you have a straightforward market value case. Bring the sale prices and addresses to your hearing.

5. Your home has deficiencies HCAD does not know about

HCAD appraisers rarely enter homes. Their assessments are based on exterior observation, permit records, and statistical modeling. They have no way to know about a failing roof, a foundation crack, a water-damaged room, or an aging HVAC system unless it was reported.

Documented repair estimates are powerful hearing evidence. A written quote from a licensed contractor for $15,000 in foundation repair is a concrete, dollar-denominated deduction that is difficult for any appraiser to dismiss. HCAD's standard practice is to deduct the cost of documented, necessary repairs directly from your market value.

Protesting your property taxes is a right guaranteed by the Texas Tax Code — and it costs nothing to file. A few hours of preparation can save hundreds or thousands of dollars per year, and a lower market value this year reduces how high your bill can grow in every year that follows.