Your county appraisal district decides what your home is worth for tax purposes, and understanding its limits is the first step toward a fair number.
- A Texas appraisal district appraises property. It does not set tax rates, mail tax bills, or collect payments.
- Values come from mass appraisal, a statistical process built for consistency across thousands of homes rather than accuracy on yours.
- The appraisal district and the County Tax Assessor-Collector are separate offices with separate jobs.
- Texas law gives you the right to inspect the data behind your value and to protest your tax appraised value every year.
Read your Notice of Appraised Value the day it arrives, then decide how to challenge the number rather than whether to challenge it.
Texas has no state property tax. Every dollar you owe is decided locally, and the chain starts in a county office most homeowners never set foot in. A Texas appraisal district produces the value your school district, city, county, and special districts use to calculate what you owe. The Texas Comptroller describes the structure of the property tax system plainly: an appraisal district exists in each county, administered by a chief appraiser who appraises your property each year. Knowing what that office controls and what it cannot touch is the difference between accepting a number and confirming that it is fair.
What Is a Texas Appraisal District?
A Texas appraisal district is a political subdivision of the state rather than a department of county government. One exists in every Texas county and shares that county’s boundaries, which is why most people call it the county appraisal district, or simply the CAD. Its statutory job is narrow: identify, list, and value every taxable property inside those lines. The office that produces the number driving your tax bill has no say in how much tax that number generates.
Who Runs a County Appraisal District in Texas?
Each district is governed by a board of directors that hires a chief appraiser, and the board’s makeup depends on county size. In counties under 75,000 in population, local taxing units elect the board and fund the district based on taxes levied in each unit. In counties of 75,000 or more, taxing units elect five members, the public elects three, and the county tax assessor-collector serves ex officio.
The board of directors sets budgets and policy. It does not appraise individual properties and cannot overturn the value on your home. That work belongs to the chief appraiser and the appraisal staff. Keep in mind that this governing board is a separate body from the Appraisal Review Board, the independent panel of local citizens that actually hears protests. A disagreement about your tax appraised value goes to the ARB, not to the board that runs the district.
What a Texas Appraisal District Cannot Do
Appraisal district responsibilities are narrower than most homeowners assume, and three jobs get mistaken for them:
- Setting tax rates. Local taxing entities adopt rates each fall. The CAD has no vote.
- Sending tax bills or accepting payments. That belongs to the County Tax Assessor-Collector.
- Deciding how much revenue schools, cities, or counties need. Those are budget decisions made by elected officials.
Homeowners who call the CAD angry about a tax rate are talking to the wrong office. Homeowners who call the tax office about a value are making the same mistake in reverse.
How Does a County Appraisal District in Texas Determine Your Property Value?
Every value in the state starts on the same date. January 1 is the valuation date in Texas, so your value reflects what the property was worth as of that morning, regardless of when the district runs the calculation or mails the notice. A kitchen you finish in March or storm damage that hits in June belongs to the following year’s picture.
The methodology is set by statute rather than local preference. Tax Code Section 23.01 requires districts to appraise taxable property at market value as of January 1 and to comply with the Uniform Standards of Professional Appraisal Practice when using mass appraisal, and Tax Code Section 25.18 requires periodic reappraisal at least once every three years. That statutory market value figure lands on your Notice of Appraised Value each spring, and it is the tax appraised value a protest challenges.
A property tax appraisal office reaches that figure through three standard methods. The sales comparison approach bases value on recent sales of similar properties, adjusted for their differences, and it is typically preferred for homes. The cost approach estimates replacement cost minus depreciation plus land value. The income approach values a property on the revenue it produces, which is why it applies to apartments and retail rather than houses.
Why Mass Appraisal Misses Individual Homes
No one from the property tax appraisal office is walking through your house. Every Texas CAD runs thousands of accounts through a model that groups properties by size, age, construction type, and location, then applies neighborhood-level conclusions to each one. That is efficient and reasonably consistent across a county. It is also blind to a failing foundation, an aging roof, or a lot that now backs onto a widened arterial road.
That gap is why protesting the tax appraised value is worth doing every single year, whether your number rose, held flat, or fell. A model cannot tell you whether it got your home right. Only a full protest can, which is why licensed, local property tax professionals put human eyes on properties a model has only ever seen as a row of data.
The Limits on How Fast Your Value Can Climb
Texas builds statutory brakes into the system, and the strongest belongs to homesteads. Tax Code Section 23.23 caps the annual increase in a qualifying homestead’s appraised value at 10 percent plus the market value of any new improvements, which holds down the value your homestead taxes are calculated on. It takes effect January 1 of the tax year after you qualify for the exemption, which is why it usually does not apply during your first year in a home. Our guide to Texas property tax increase limits covers how these layers interact.
Texas Appraisal District vs. the Tax Assessor-Collector: Who Does What?
Two county offices touch your property taxes, and appraisal district responsibilities stop where the tax office’s begin. The CAD determines value and handles protests. The County Tax Assessor-Collector calculates and mails the bill, then collects payment. Neither office sets your tax rate, and taxpayers generally have until January 31 of the following year to pay. The calendar makes the division obvious.
The Texas Property Tax Year in Six Steps
- April 1 and May 1. Notices of Appraised Value are sent by the chief appraiser, by April 1 for a single-family residence and May 1 for other property, or as soon thereafter as practicable.
- May 15. Deadline to file a protest with the Appraisal Review Board, or 30 days after your notice was delivered, whichever falls later.
- June. Informal conferences with appraisal district staff, offered before a formal hearing.
- July and August. Formal ARB hearings, followed by delivery of the certified appraisal roll to taxing entities.
- September and October. Local taxing entities adopt their tax rates for the year.
- October and November. Tax bills are mailed by the County Tax Assessor-Collector, with payment due by January 31.
Notice where the leverage sits. By the time a bill reaches your mailbox, the value was locked months earlier and the rate adopted weeks earlier, so how your property tax is calculated becomes arithmetic with no remaining variables. The one window that belongs to you opens in the spring.
What Are Your Rights With a Texas Appraisal District?
Texas hands property owners a stronger position than most states do, and those rights are written down rather than implied.
The Rights Every Property Owner Holds
The Property Taxpayer Bill of Rights confirms your right to equal and uniform taxation, to have your property appraised uniformly with similar property in your county, to request and inspect non-confidential information used to appraise it, and to protest your property’s value to an appraisal review board of impartial citizens in your community.
The inspection right is the one homeowners underuse. The district has to show you the data behind your number, and reviewing it before a hearing changes the conversation. That review starts with understanding your appraisal notice. The notice labels the figure it proposes as “Market Value,” and that figure is the tax appraised value your protest challenges.
What Actually Counts as Protest Evidence
A protest challenges the tax appraised value, and the evidence that moves it is narrow. Closed comparable sales from the 12 months preceding January 1 of the protest year carry real weight, as do written contractor estimates for documented repairs. Active and pending listings are asking prices rather than completed transactions, and automated estimates from real estate websites are not verified sale data, so neither holds up in front of the ARB. Track actual sales as they close instead. You file Form 50-132, Notice of Protest with the ARB, in most cases by May 15 or 30 days after your notice is delivered, whichever is later. Our breakdown of the Notice of Protest form covers each section.
What to Look for If You Hire Help
Fee structure tells you more about a protest firm than its marketing does. A hybrid model, meaning a modest upfront fee plus a percentage of savings, is what makes a full protest on every property worth carrying out, because the upfront portion funds the research and the hearing even when the data suggests a value may already be fair. Contingency-only arrangements pay only when a reduction lands, which can create a quiet incentive to work the easiest files and let harder ones go. No company can legally guarantee a specific reduction, so treat any promise of a set dollar amount as a reason for caution.
Record Corrections and Exemptions Go Straight to the CAD
If the district’s records show the wrong square footage, an extra bathroom, or a garage that does not exist, that is a records problem. Record corrections are handled directly with the CAD as an administrative fix rather than through a protest, but resolving them makes sure next spring’s tax appraised value is built on accurate data.
Exemptions follow the same administrative path and are not a protest action either. Applications for property tax exemptions are filed with your Texas CAD, and chief appraisers alone determine whether property qualifies. School districts must provide a $140,000 residence homestead exemption, plus an additional $60,000 for persons age 65 or older or disabled. Filing is a short form you can complete yourself, so be skeptical of any firm charging extra to handle it. Tax Code Section 11.43(h-1) also requires chief appraisers to review each homestead exemption at least once every five tax years, so respond promptly to any verification request. Understanding tax appraised value versus market value helps you read what the district sends.
Frequently Asked Questions
Is an appraisal district part of county government?
No. It is a separate political subdivision of the state with its own board of directors, funded by the taxing units it serves. It shares the county’s boundaries, which is why it is commonly called the county appraisal district.
Can the appraisal district lower my tax bill?
It can lower your tax appraised value, the number your bill is built from. For most homeowners, a reduction flows directly into a lower tax bill. For a narrower group, typically long-tenured homestead owners whose 10 percent cap already holds taxable value below appraised value, a reduction protects the baseline for future years instead. Either way, the lower number carries forward.
Should I protest if my value did not increase?
Yes. Mass appraisal produces a figure whether or not it moves, and a flat number can still be too high. Protesting the tax appraised value annually is the only way to learn where your property stands.
What is the difference between the CAD and the county tax office?
The CAD appraises property and handles protests. The County Tax Assessor-Collector mails the bill and collects payment. Tax rates are adopted by local taxing entities, separate from both offices.
Know Your Number Before You File
Your Texas appraisal district will send another notice next spring, built the same way, on the same timeline, with the same blind spots. The homeowners in the strongest position read the number carefully and take the tax appraised value through the full protest process every year rather than only when it spikes.
If you would rather hand that work to someone who does it for a living, our licensed, local property tax professionals handle the research, the filing, and the hearings for Texas homeowners entirely online. We will not promise you a specific reduction, because no company legally can. What our team at Home Tax Shield does commit to is protesting your property fully, every year, so you find out whether your value is fair. Get started with your property.