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 78717 are overassessed?

9.5% of homes in Temple ZIP 78717 (901 of 9,534 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 Temple ZIP 78717?

File a Notice of Protest with WCAD 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.

Williamson County · Temple

ZIP 78717 property tax overassessment report

9.5% of homes in Temple ZIP 78717 (901 of 9,534 parcels) are assessed more than 10% above what comparable-size homes in the same ZIP typically pay per square foot. Combined annual overpayment: $1,094,807.

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9,534

Homes in ZIP

901

Flagged as overassessed

9.5%

$56,516

Avg overage / home

$615,359

Typical value

~$236/sqft

Williamson County · over-assessed homes overpay year-round

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

Williamson County guide →

Top 25 most overassessed homes in 78717

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
1XX ANNALY CT W	8,920	2022	$3,872,246	$2,105,120	$1,767,126	83.9%	$35,166
1XXXX AVERY CLUB DR	10,994	2006	$3,867,898	$2,594,584	$1,273,314	49.1%	$25,339
1XX TAYLOR RANCH RD	8,103	2022	$2,867,837	$1,912,308	$955,529	50%	$19,015
1XXXX N RM 620 RD	5,821	2018	$1,938,149	$1,373,756	$564,393	41.1%	$11,231
1XXXX AVERY CLUB DR	4,867	2006	$1,588,261	$1,148,612	$439,649	38.3%	$8,749
1XXXX LAVON BND	3,177	2018	$1,145,323	$749,772	$395,551	52.8%	$7,871
1XXXX AVERY CLUB DR	4,050	2006	$1,329,741	$955,800	$373,941	39.1%	$7,441
1XXXX TIPPYS TER	3,541	2018	$1,207,992	$835,676	$372,316	44.6%	$7,409
1XXXX LAVON BND	3,216	2019	$1,117,464	$758,976	$358,488	47.2%	$7,134
9XXX RATTLESNAKE TRL	4,055	2020	$1,298,855	$956,980	$341,875	35.7%	$6,803
1XXXX AVERY CLUB DR	4,161	2007	$1,323,846	$981,996	$341,850	34.8%	$6,803
1XXXX AVERY CLUB DR	3,749	2005	$1,225,430	$884,764	$340,666	38.5%	$6,779
1XXXX SAMUEL TRL	3,980	2018	$1,276,068	$939,280	$336,788	35.9%	$6,702
1XXXX AVERY CLUB DR	4,194	2008	$1,323,395	$989,784	$333,611	33.7%	$6,639
1XXXX DONOHER DR	4,020	2020	$1,275,703	$948,720	$326,983	34.5%	$6,507
1XXXX AVERY CLUB DR	4,166	2005	$1,308,602	$983,176	$325,426	33.1%	$6,476
1XXXX TIPPYS TER	3,802	2019	$1,222,449	$897,272	$325,177	36.2%	$6,471
1XXXX DOUBLE EAGLE DR	3,751	2003	$1,209,987	$885,236	$324,751	36.7%	$6,463
1XXXX DONOHER DR	3,393	2020	$1,121,575	$800,748	$320,827	40.1%	$6,384
1XXXX AVERY CLUB DR	4,051	2004	$1,276,205	$956,036	$320,169	33.5%	$6,371
9XXX FINLEY MAE WAY	4,131	2020	$1,290,925	$974,916	$316,009	32.4%	$6,289
1XXXX AVERY CLUB DR	4,885	2004	$1,467,454	$1,152,860	$314,594	27.3%	$6,260
1XXXX SAMUEL TRL	3,135	2017	$1,054,379	$739,860	$314,519	42.5%	$6,259
1XXXX DONOHER DR	3,209	2020	$1,070,893	$757,324	$313,569	41.4%	$6,240
1XXXX TIPPYS TER	3,299	2018	$1,091,281	$778,564	$312,717	40.2%	$6,223

Data: HCAD public records, Williamson County, ZIP 78717. 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.

Is yours one of them?

The 2026 protest deadline has passed, but WilliamsonCounty will publish fresh 2027 values next April. Lock in $99/yr monitoring now and we'll auto-build your iFile-ready packet the moment your new value drops.

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