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 75189 are overassessed?

15.6% of homes in Royse City ZIP 75189 (523 of 3,345 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 Royse City ZIP 75189?

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 · Royse City

ZIP 75189 property tax overassessment report

15.6% of homes in Royse City ZIP 75189 (523 of 3,345 parcels) are assessed more than 10% above what comparable-size homes in the same ZIP typically pay per square foot. Combined annual overpayment: $1,304,108.

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3,345

Homes in ZIP

523

Flagged as overassessed

15.6%

$115,977

Avg overage / home

$304,718

Typical value

~$155/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 75189

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
1XXXX COUNTY ROAD 541	3,107	2000	$7,517,313	$481,585	$7,035,728	1461%	$143,529
1XXXX FM 2755	2,520	1975	$2,130,928	$390,600	$1,740,328	445.6%	$35,503
1XXXX FM 2755	952	1930	$1,454,273	$147,560	$1,306,713	885.5%	$26,657
1XXX COUNTY ROAD 677	4,698	2021	$1,988,536	$728,190	$1,260,346	173.1%	$25,711
4XXX ABBOTT RANCH RD	6,041	2005	$2,168,388	$936,355	$1,232,033	131.6%	$25,133
8XXX COUNTY ROAD 678	1,219	1947	$1,307,923	$188,945	$1,118,978	592.2%	$22,827
1XXXX FM 2755	8,433	2022	$2,189,173	$1,307,115	$882,058	67.5%	$17,994
2XXXX FM 2755	1,908	1965	$1,065,703	$295,740	$769,963	260.4%	$15,707
1XXXX COUNTY ROAD 800	2,020	1986	$1,056,537	$313,100	$743,437	237.4%	$15,166
1XXXX COUNTY ROAD 586	2,769	2014	$1,160,138	$429,195	$730,943	170.3%	$14,911
1XXX FM 1777	3,997	2016	$1,327,420	$619,535	$707,885	114.3%	$14,441
2XXXX FM 2755	1,664	1985	$961,218	$257,920	$703,298	272.7%	$14,347
1XXXX FM 2755	2,878	2002	$1,145,048	$446,090	$698,958	156.7%	$14,259
1XXXX FM 2755	1,750	2017	$970,018	$271,250	$698,768	257.6%	$14,255
1XXXX COUNTY ROAD 587	2,728	2020	$1,097,174	$422,840	$674,334	159.5%	$13,756
2XXXX FM 2755	2,544	1995	$1,062,535	$394,320	$668,215	169.5%	$13,632
1XXX THOMAS PL	2,438	2008	$990,310	$377,890	$612,420	162.1%	$12,493
7XX DOUBLE R PASS	1,976	2001	$917,959	$306,280	$611,679	199.7%	$12,478
1XXXX COUNTY ROAD 586	3,682	2021	$1,182,132	$570,710	$611,422	107.1%	$12,473
6XX COUNTY ROAD 979	1,421	1981	$827,636	$220,255	$607,381	275.8%	$12,391
7XX COUNTY ROAD 979	1,508	1971	$839,044	$233,740	$605,304	259%	$12,348
1XXX S FM 1138	3,685	2003	$1,154,043	$571,175	$582,868	102%	$11,891
1XXXX STATE HWY 66	4,447	2021	$1,271,762	$689,285	$582,477	84.5%	$11,883
1XXXX COUNTY ROAD 1088	1,596	2019	$827,752	$247,380	$580,372	234.6%	$11,840
1XXXX COUNTY ROAD 587	2,392	1992	$934,786	$370,760	$564,026	152.1%	$11,506

Data: HCAD public records, Collin County, ZIP 75189. 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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