How to Protest Your Property Tax in Tom Green County, Texas

By Chris Outlaw · Published September 2026 · ~9 minute read · Covers San Angelo, Christoval, Wall, Grape Creek, Carlsbad, Water Valley, Veribest, Mereta

Tom Green County is the heart of the Concho Valley in West Texas — anchored by San Angelo, the county seat and only major city, and surrounded by smaller communities like Christoval, Wall, Grape Creek, and Carlsbad. San Angelo homeowners have seen sharp reappraisal jumps in recent years, and the county's appraisal district runs an online-first protest process. This guide is the Tom Green County edition — and Tom Green is now live on TaxStand's free analyzer with full size-adjusted comparables.

Tom Green County is LIVE on TaxStand's free analyzer. We pull living-area square footage straight from the Tom Green CAD roll, so you can enter your address and get an instant unequal-appraisal read: your appraised dollars-per-square-foot versus the neighborhood median. Check your San Angelo property free →

In this guide
  1. Tom Green CAD by the numbers
  2. Using the Tom Green CAD public portal
  3. Critical Tom Green County deadlines
  4. Filing your protest, step-by-step
  5. The statewide rules every Texas protest runs on
  6. What to expect at the informal review and ARB
  7. By community — San Angelo, Christoval, Wall, Grape Creek
  8. FAQ — Tom Green County edition

Tom Green CAD by the numbers

Tom Green County Appraisal District

2302 Pulliam St, San Angelo, TX 76905

Public websitetomgreencad.com
Phone(325) 658-5575
Office hoursMonday–Friday, 8:30 AM – 4:30 PM (Central)
Protest email[email protected]
Online protest filingYes — the district's preferred method, via the tomgreencad.com portal
Portal platformISW / Southwest Data Solutions
Service areaTom Green County, Texas (Concho Valley, West Texas)

Tom Green County sits in West Texas's Concho Valley, with San Angelo as its county seat and dominant population center. The Tom Green County Appraisal District appraises every taxable property in the county — residential, commercial, rural, and agricultural. The district runs its public property-search and protest portal on the ISW / Southwest Data Solutions platform; visiting tomgreencad.com redirects to that portal, where you can search by address, owner, or account number and file online.

The appraisal district publicly encourages property owners to file their protests online rather than mailing forms or waiting in line at the office. During recent reappraisal cycles, San Angelo saw large year-over-year valuation increases, and the district's office has drawn heavy protest-season traffic — another reason the online-first workflow is worth using.

Using the Tom Green CAD public portal

The Tom Green CAD portal at tomgreencad.com (built on ISW / Southwest Data Solutions) is your single source. It supports:

The ISW / Southwest Data Solutions interface is a standard .aspx web application. It works best on a current desktop browser (Chrome, Firefox, Edge, or Safari). If a page misbehaves during peak protest volume, try a different browser or come back off-peak before assuming the system is down.

One number is all you need to start. Before you touch the portal, run your address through TaxStand's free analyzer. Because Tom Green is live with size-adjusted comps, you'll see instantly whether your appraised dollars-per-square-foot is above the neighborhood median — which tells you if you have an unequal-appraisal case worth filing at all.

Critical Tom Green County deadlines

Date (annually)What happens
April (typical)Tom Green CAD mails the "Notice of Appraised Value"
April 30Deadline to file Form 50-114 (Residence Homestead Exemption) for the current year
May 15 (or 30 days after notice mailed)Deadline to file Form 50-132 (Notice of Protest)
Mid-May onwardInformal reviews and formal Appraisal Review Board (ARB) hearings

The protest deadline is set statewide by Texas Tax Code §41.44: May 15, or 30 days after the CAD mailed your Notice of Appraised Value, whichever is later. If you never received a notice, you can still protest — but don't rely on that; check the portal for your value each spring.

Filing your protest, step-by-step

1Pull your Tom Green CAD record

Go to tomgreencad.com, search your property by address or account number, and verify the basics: living-area square footage, year built, and exemptions. If the CAD has your square footage or condition wrong, that alone can justify a reduction. Note your account number and your total appraised value.

2File your protest online (or by email/mail)

Use the portal's Protest Process page to file online — the district's preferred method. Check both "Value over market" and "Unequal appraisal" grounds on Form 50-132 so you keep every argument available at the hearing.

Alternatives if you can't file online: email a signed Form 50-132 to [email protected], mail it to 2302 Pulliam St, San Angelo, TX 76905, or deliver it in person during office hours. Keep proof of delivery either way.

3Pull your comparables

The Tom Green CAD portal lets you look up other properties in your neighborhood. Pull nearby homes with similar living-area square footage (±25%) and year built (±10 years). This is exactly the data TaxStand assembles for you automatically — enter your address and we'll surface the size-adjusted per-square-foot comps for your San Angelo neighborhood from the Tom Green CAD roll.

4Compute the median and build your packet

The equal-and-uniform math is the same everywhere in Texas: median dollars-per-square-foot of your comparables × your square footage = a defensible target value. If your appraised per-square-foot value is above the neighborhood median, that gap is your case. Assemble it into a single PDF for the hearing.

5Request the CAD's evidence packet

Under Texas Tax Code §41.461, you may request the appraisal district's planned evidence at least 14 days before your formal ARB hearing. Request it — it tells you exactly what the district will argue and lets you rebut it in advance.

6Show up to the hearing

Most cases resolve at the informal review with a staff appraiser before ever reaching the formal ARB panel. Bring your packet, state your requested value clearly, and lead with the unequal-appraisal median. If the informal offer isn't fair, proceed to the ARB.

See our detailed how-tos: finding comparables, filling out Form 50-132, the ARB hearing playbook, and hearing scripts.

The statewide rules every Texas protest runs on

Tom Green County follows the same Texas Property Tax Code every county does. The parts that matter most for a homeowner:

The deadline — §41.44

File your Notice of Protest by May 15, or within 30 days of the date the CAD mailed your Notice of Appraised Value, whichever is later. Use Comptroller Form 50-132 (the Notice of Protest form). It's free and available on the CAD portal and from the Texas Comptroller.

Unequal appraisal — §41.43(b)(3)

This is the equal-and-uniform basis, and it's often the strongest argument. Your appraised value may not exceed the median appraised value of a reasonable number of comparable properties, appropriately adjusted for size and features. You win on this ground by showing your dollars-per-square-foot is above the neighborhood median — regardless of what the home would sell for. This is exactly the read TaxStand's analyzer gives you.

The circuit-breaker cap — §23.231

Texas's temporary circuit-breaker limits how much the appraised value of most non-homestead real property valued at $5 million or less can rise in a year to 20%. It's a separate protection from the homestead 10% cap, it applies through the 2026 tax year unless extended, and it's automatic — but if the district's number ignores it, that's grounds to protest.

Informal first, then the ARB

Every Texas protest gives you an informal review with a district appraiser before a formal hearing in front of the independent Appraisal Review Board (ARB). Most cases settle informally. If they don't, the ARB issues a written determination you can rely on.

Binding arbitration — §41A

For qualifying properties (including residence homesteads and certain properties at or below the statutory value ceiling), if you disagree with the ARB's decision you can request binding arbitration as an alternative to district-court appeal by filing Form AP-219 and the required deposit within the statutory window. It's a lower-cost path than court for many homeowners.

What to expect at the informal review and ARB

The Tom Green County process mirrors the rest of Texas. First comes the informal review: you sit down (in person, by phone, or per the district's process) with a staff appraiser, walk through your evidence, and often reach a settlement on the spot. Most homeowners never need the formal panel.

If the informal offer isn't acceptable, your protest goes to the Appraisal Review Board — a panel of local citizens independent of the appraisal district. Hearings are brief and businesslike. Bring your packet, state your requested value, and let the median-per-square-foot math carry the argument. Organized evidence gets respect; vague complaints about "taxes being too high" do not.

Lead with the unequal-appraisal median. A market-value argument invites a debate about what your home is worth. The §41.43(b)(3) equal-and-uniform argument is arithmetic: your per-square-foot value versus the neighborhood median. It's harder to wave away, and it's the number TaxStand hands you.

By community — San Angelo, Christoval, Wall, Grape Creek

San Angelo

The county seat and by far the largest market in Tom Green County — served by San Angelo ISD. San Angelo's housing stock ranges from historic near-downtown neighborhoods to mid-century additions and newer subdivisions on the south and southwest edges. Because the age and quality of housing varies so much block to block, neighborhood-level comp selection is essential: a 1950s home near downtown is not comparable to a 2010s subdivision on the outskirts. This is where size-adjusted per-square-foot comps do the most work.

Christoval

A small community south of San Angelo along the South Concho River, served by Christoval ISD. Properties here often sit on larger lots or acreage; if part of your land is in active agricultural use, ask the CAD about ag-valuation separately from your value protest.

Wall

An unincorporated farming community east of San Angelo, served by Wall ISD. Mix of rural-residential homes and agricultural tracts. Comparables can be sparse, so widening the square-footage and year-built windows is often necessary to build a fair median.

Grape Creek

A census-designated place just northwest of San Angelo, served by Grape Creek ISD. Predominantly residential with a consistent housing profile, which makes subdivision-level unequal-appraisal comparisons relatively clean here.

Carlsbad, Water Valley, Veribest, Mereta

The county's smaller outlying communities — Carlsbad and Water Valley to the northwest (Water Valley ISD), Veribest to the east (Veribest ISD), and Mereta farther east. These are largely rural-residential and agricultural areas with fewer nearby comparables. For a fair unequal-appraisal median, you'll typically need to reach across a wider radius and adjust carefully for lot size and finish level.

Check your Tom Green County property free — right now.

Tom Green County is live on TaxStand with full size-adjusted comparables from the Tom Green CAD roll. Enter your address and get an instant read on your appraised dollars-per-square-foot versus your neighborhood median — the exact unequal-appraisal number you'd take to the hearing.

Analyze my Tom Green County property free

FAQ — Tom Green County edition

Is filing online the best way to protest in Tom Green County?

Yes — the Tom Green County Appraisal District publicly prefers online filing through its portal at tomgreencad.com. If you'd rather not file online, you can email a signed Form 50-132 to [email protected], mail it to 2302 Pulliam St, San Angelo, TX 76905, or deliver it in person. Keep proof of delivery whichever route you choose.

What grounds should I check on my protest form?

Check both "Value over market" and "Unequal appraisal." The unequal-appraisal ground (§41.43(b)(3)) is usually the strongest for a homeowner because it comes down to a median-per-square-foot comparison rather than a debate over sale price. Checking both preserves every argument.

Can my Christoval, Wall, or rural property use the same process?

Yes. The Texas Tax Code applies uniformly across the county. Rural-residential parcels with acreage sometimes have agricultural-valuation considerations; if your property includes land in active agricultural use, ask Tom Green CAD about ag-valuation separately from your value protest.

Does the 20% circuit-breaker cap apply to my property?

The §23.231 circuit-breaker applies to most non-homestead real property valued at $5 million or less and limits annual appraised-value increases to 20% through the 2026 tax year (unless extended by the Legislature). Homesteads have their own separate 10% cap. If the district's value ignores the applicable cap, that's grounds to protest.

How does TaxStand help with a Tom Green County protest?

Tom Green County is live on TaxStand's free analyzer with full size-adjusted comparables — living-area square footage pulled from the Tom Green CAD roll. Enter your address at taxstand.us and you'll instantly see your appraised dollars-per-square-foot next to the neighborhood median, so you know whether you have an unequal-appraisal case before you file.

Don't guess whether you're over-appraised — know.

Free, instant, and built on the Tom Green CAD roll. Enter your San Angelo (or Christoval, Wall, Grape Creek) address and get your size-adjusted unequal-appraisal read in seconds.

Check my property now

This article is for general educational use and does not constitute legal or tax advice. The Tom Green County Appraisal District (tomgreencad.com, 2302 Pulliam St, San Angelo, TX 76905, (325) 658-5575) is the authoritative source for Tom Green County appraisal and protest information. Statute references are to the Texas Property Tax Code.

TaxStand is a service of Outlaw Holdings LLC. We do not represent homeowners at hearings. Our analyzer builds the evidence you file yourself.