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

Collin County Property Tax Protest

Collin County homeowners can protest their 2025 property appraisal with the Collin Central Appraisal District (CCAD). AppealTexasTax is a free, independent tool — not affiliated with CCAD — 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 Collin County home on the map →

How Collin County's 2025 appraisals stack up

143,581
Collin County single-family homes appraised more than 2% above the comp median of their 5 closest matched neighbors on the 2025 CCAD roll — on the size-adjusted or raw-dollar measure, whichever is stronger — the threshold for a §41.43(b)(3) protest. That's 43% of all single-family parcels countywide — a combined $6.7 billion of appraised value sitting above the comp median — an unequal-appraisal protest each owner could file, and most never do.
333,174
single-family homes on the countywide roll
61,449
strong cases — more than 7% over the comp median
$182.3 billion
total 2025 appraised value, single-family
+7.8%
median year-over-year change in appraised value

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 Collin 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 2025 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 collincad.org to confirm the comps before you file.
  4. File your protest online through onlineportal.collincad.org (or by the paper form your notice came with).

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

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

Collin County property-tax protest FAQ

How do I protest my Collin County property tax appraisal?

Open the AppealTexasTax map and find your Collin County home. The pin color shows whether your 2025 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 onlineportal.collincad.org — or use the paper form your notice came with — before the May filing deadline.

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

Generally the May filing deadline: May 15, or 30 days after your CCAD 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 Collin Central Appraisal District (CCAD), any appraisal review board, or the State of Texas, and it is not legal advice.

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

It compares your CCAD 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 Collin County

In 2024, 85,274 property-tax protests were filed with CCAD. 76% of informal reviews ended in a reduction and 52% of formal ARB hearings did, together removing $1.2B in appraised value. About 83% 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 CCAD appraisal data. It is not affiliated with the Collin 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 Collin Central Appraisal District.