Educational tool — not legal advice. See Disclaimer & Terms of Use.

Williamson County Property Tax Protest

Williamson County homeowners can protest their 2026 property appraisal with the Williamson Central Appraisal District (WCAD). AppealTexasTax is a free, independent tool — not affiliated with WCAD — that checks whether your single-family home is appraised above the median of comparable homes (a §41.43(b)(3) case) and walks you through filing. It is not legal advice.

Check your Williamson County home on the map →

How Williamson County's 2026 appraisals stack up

83,120
Williamson County single-family homes appraised more than 2% above the comp median of their 5 closest matched neighbors on the 2026 WCAD roll — on the size-adjusted or raw-dollar measure, whichever is stronger — the threshold for a §41.43(b)(3) protest. That's 40% of all single-family parcels countywide — a combined $3.3 billion of appraised value sitting above the comp median — an unequal-appraisal protest each owner could file, and most never do.
210,096
single-family homes on the countywide roll
31,809
strong cases — more than 7% over the comp median
$98.2 billion
total 2026 appraised value, single-family

This count reflects the spread of the data, not proof of a county-wide error: any large dataset has homes above and below the median, and §41.43(b)(3) lets an owner whose home sits above the median of its comps protest down toward it. The test is single-family residential only and doesn't weigh lot size, condition, pools, or other inputs the CAD's full model includes — check your specific home on the map.

How to protest your Williamson County appraisal

  1. Open the map and find your home (search by address or zoom to your street). The pin's color tells you, at a glance, whether your 2026 appraisal is above the median of your 5 closest comparable neighbors.
  2. Click your pin to open a personalized report: your comps, the size-adjusted and raw-dollar median math, and the lowest defensible value to enter as your opinion of value.
  3. Pull your account and your neighbors’ records at search.wcad.org to confirm the comps before you file.
  4. File your protest online through wcad.org/online-protest-filing (or by the paper form your notice came with).

New to protesting? The Playbook walks through the whole process.

See the full Williamson County appraisal breakdown — distribution and neighborhood case rates →

Williamson County property-tax protest FAQ

How do I protest my Williamson County property tax appraisal?

Open the AppealTexasTax map and find your Williamson County home. The pin color shows whether your 2026 appraisal sits above the median of comparable homes. Click your pin for a personalized report with your comps and the lowest defensible value to enter as your opinion of value, then file online through wcad.org/online-protest-filing — or use the paper form your notice came with — before the May filing deadline.

What is the deadline to protest my appraisal in Williamson County?

Generally the May filing deadline: May 15, or 30 days after your WCAD notice of appraised value is delivered, whichever is later. If that date lands on a weekend or holiday it rolls to the next business day. Always check the protest deadline printed on your own notice.

Is AppealTexasTax free to use?

Yes. AppealTexasTax is a free, independent tool built by a citizen developer. It is not affiliated with the Williamson Central Appraisal District (WCAD), any appraisal review board, or the State of Texas, and it is not legal advice.

How does AppealTexasTax decide if my Williamson County home is over-assessed?

It compares your WCAD appraised value to the median of your five closest comparable homes — same neighborhood and grade, within 15% of your living area and 10 years of age — under the Texas Tax Code §41.43(b)(3) unequal-appraisal standard, measured both size-adjusted and in raw dollars. If your value is above the stronger of those two medians, you likely have a case to protest.

Do I need a lawyer or a tax agent to protest?

No. Any property owner can file their own protest for free and present comparable-home evidence themselves. The Playbook walks through the whole process step by step.

Protest outcomes in Williamson County

In 2024, 55,655 property-tax protests were filed with WCAD. 55% of informal reviews ended in a reduction and 54% of formal ARB hearings did, together removing $730M in appraised value. About 79% were filed by paid agents or firms — but any owner can file for free.

Source: Texas Comptroller Appraisal District Operations Survey (2024). Figures are county-wide, self-reported by the appraisal district.

The fine print

Not legal advice. This page is an educational indicator built on public WCAD appraisal data. It is not affiliated with the Williamson Central Appraisal District, any appraisal review board, or the State of Texas, and it does not file anything on your behalf — you are responsible for your own filings and deadlines. Generally the protest deadline is the May filing deadline (May 15, or 30 days after your notice is delivered, whichever is later). See the full Disclaimer & Terms of Use.

Built by an independent citizen developer. Not affiliated with the Williamson Central Appraisal District.