What is a property tax appeal?

A property tax appeal (also called a protest in Texas) is a formal process where you challenge your county appraiser's assessed value of your home. You file with the county Appraisal Review Board (ARB), present comparable-sales evidence that your home is overvalued, and the board issues a ruling.

When is the Texas property tax appeal deadline?

In Texas, the deadline to file a property tax protest is May 15 each year (or 30 days after your appraisal notice is mailed, whichever is later). The 2026 deadline has passed; the next protest window is April-May 2027.

How much can I save by appealing my property taxes?

Homeowners who appeal save an average of $774 per year in Texas, and you can protest again every year. Success rates range from 80-91% when you bring 3-5 comparable sales as evidence.

What's the difference between AppealMyTax and Ownwell?

AppealMyTax charges a flat $99, one time, for a complete personalized appeal packet you file yourself, or $199-$249 for our done-for-you filing service. You keep 100% of your savings every year. Ownwell keeps a 25-35% contingency on whatever you save and O'Connor keeps about half, meaning a $2,461 reduction costs you roughly $615-$1,230 every year forever. We charge $99 once and keep nothing.

What percent of homes in ZIP 75442 are overassessed?

31.9% of homes in Houston ZIP 75442 (1,715 of 5,369 parcels) are assessed more than 10% above the typical per-square-foot value for the neighborhood, based on HCAD public records.

How do I protest my property taxes in Houston ZIP 75442?

File a Notice of Protest with Collin CAD by May 15 each year. Bring 3-5 comparable sales from your immediate area to your ARB hearing. 2026 deadline has passed — next protest window is April-May 2027.

Collin County · Houston

ZIP 75442 property tax overassessment report

31.9% of homes in Houston ZIP 75442 (1,715 of 5,369 parcels) are assessed more than 10% above what comparable-size homes in the same ZIP typically pay per square foot. Combined annual overpayment: $5,536,044.

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5,369

Homes in ZIP

1,715

Flagged as overassessed

31.9%

$150,140

Avg overage / home

$347,450

Typical value

~$174/sqft

Collin County · over-assessed homes overpay year-round

Next: Collin CAD 2027 values mail late March-April. Protest deadline: May 15, 2027.

Collin County guide →

Top 25 most overassessed homes in 75442

Addresses anonymized. Pulled directly from HCAD public records. Each home pays significantly more than what a comparable-size home in this ZIP typically pays.

Address	Sq ft	Year	Market val	Expected	Overage	% over	$/yr
6XXX COUNTY ROAD 572	2,520	1950	$3,935,399	$438,480	$3,496,919	797.5%	$71,337
1XXX COUNTY ROAD 658	3,762	2004	$3,565,886	$654,588	$2,911,298	444.8%	$59,390
1XXXX COUNTY ROAD 566	3,297	2020	$3,067,945	$573,678	$2,494,267	434.8%	$50,883
6XXX N STATE HWY 78	3,360	1986	$2,725,149	$584,640	$2,140,509	366.1%	$43,666
2XXXX COUNTY ROAD 850	1,304	1960	$2,303,562	$226,896	$2,076,666	915.3%	$42,364
4XXX COUNTY ROAD 695	1,352	2007	$2,109,717	$235,248	$1,874,469	796.8%	$38,239
1XXXX COUNTY ROAD 665	9,491	1993	$3,512,332	$1,651,434	$1,860,898	112.7%	$37,962
1XXXX COUNTY ROAD 663	1,456	2020	$2,107,533	$253,344	$1,854,189	731.9%	$37,825
7XXX COUNTY ROAD 705	3,070	2019	$2,277,733	$534,180	$1,743,553	326.4%	$35,568
1XXXX COUNTY ROAD 603	900	1996	$1,816,905	$156,600	$1,660,305	1060.2%	$33,870
1XXXX COUNTY ROAD 618	2,120	1990	$1,881,036	$368,880	$1,512,156	409.9%	$30,848
6XX COUNTY ROAD 697	1,952	1975	$1,832,832	$339,648	$1,493,184	439.6%	$30,461
1XXXX COUNTY ROAD 605	2,120	1990	$1,850,914	$368,880	$1,482,034	401.8%	$30,233
1XXX COUNTY ROAD 610	3,884	1985	$2,157,278	$675,816	$1,481,462	219.2%	$30,222
3XXX COUNTY ROAD 569	1,079	2024	$1,654,558	$187,746	$1,466,812	781.3%	$29,923
1XXXX COUNTY ROAD 814	2,206	1981	$1,848,184	$383,844	$1,464,340	381.5%	$29,873
6XXX COUNTY ROAD 662	442	2025	$1,516,893	$76,908	$1,439,985	1872.3%	$29,376
1XXX N STATE HWY 78	440	1980	$1,487,662	$76,560	$1,411,102	1843.1%	$28,786
1XXXX COUNTY ROAD 656	848	1962	$1,465,723	$147,552	$1,318,171	893.4%	$26,891
1XXXX COUNTY ROAD 603	2,496	1996	$1,686,123	$434,304	$1,251,819	288.2%	$25,537
1XXXX COUNTY ROAD 614	4,279	2016	$1,984,191	$744,546	$1,239,645	166.5%	$25,289
6XXX COUNTY ROAD 662	1,276	2022	$1,446,176	$222,024	$1,224,152	551.4%	$24,973
1XXXX COUNTY ROAD 617	2,930	1994	$1,730,535	$509,820	$1,220,715	239.4%	$24,903
3XXX COUNTY ROAD 660	2,308	1985	$1,608,245	$401,592	$1,206,653	300.5%	$24,616
4XXX COUNTY ROAD 660	700	2011	$1,320,422	$121,800	$1,198,622	984.1%	$24,452

Data: HCAD public records, Collin County, ZIP 75442. Addresses anonymized to protect privacy; full data is public record under Texas Public Information Act. Showing top 25 — there are likely more overassessed homes in this ZIP.

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