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 78613 are overassessed?

12.6% of homes in Killeen ZIP 78613 (3,166 of 25,102 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 Killeen ZIP 78613?

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 · Killeen

ZIP 78613 property tax overassessment report

12.6% of homes in Killeen ZIP 78613 (3,166 of 25,102 parcels) are assessed more than 10% above what comparable-size homes in the same ZIP typically pay per square foot. Combined annual overpayment: $4,600,378.

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25,102

Homes in ZIP

3,166

Flagged as overassessed

12.6%

$67,584

Avg overage / home

$520,728

Typical value

~$217/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 78613

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
3XXX ABBOTSBURY DR	10,114	2014	$5,198,196	$2,194,738	$3,003,458	136.8%	$59,769
3XXX WELTON CLIFF DR	6,320	2004	$3,529,309	$1,371,440	$2,157,869	157.3%	$42,942
3XXX WELTON CLIFF DR	5,754	2014	$3,354,903	$1,248,618	$2,106,285	168.7%	$41,915
3XXX WELTON CLIFF DR	5,216	2005	$3,186,190	$1,131,872	$2,054,318	181.5%	$40,881
3XXX WELTON CLIFF DR	6,290	2005	$3,419,144	$1,364,930	$2,054,214	150.5%	$40,879
3XXX WELTON CLIFF DR	4,096	2020	$2,894,223	$888,832	$2,005,391	225.6%	$39,907
3XXX WELTON CLIFF DR	5,698	2005	$3,103,044	$1,236,466	$1,866,578	151%	$37,145
3XXX WELTON CLIFF DR	5,226	2005	$2,912,104	$1,134,042	$1,778,062	156.8%	$35,383
6XX KODIAK TRL	6,326	2013	$2,945,816	$1,372,742	$1,573,074	114.6%	$31,304
2XXX POST RIVER RD	8,008	2023	$3,215,585	$1,737,736	$1,477,849	85%	$29,409
2 ANDERSON CROSSING	3,758	1992	$2,148,974	$815,486	$1,333,488	163.5%	$26,536
6XX KODIAK TRL	5,355	2006	$2,472,005	$1,162,035	$1,309,970	112.7%	$26,068
2XXX YUKON CI	4,866	2006	$2,352,069	$1,055,922	$1,296,147	122.8%	$25,793
6XX KODIAK TRL	5,112	2006	$2,385,168	$1,109,304	$1,275,864	115%	$25,390
2XXX POST RIVER RD	5,577	2009	$2,463,807	$1,210,209	$1,253,598	103.6%	$24,947
7XX KODIAK TRL	4,483	2005	$2,189,155	$972,811	$1,216,344	125%	$24,205
5XX KODIAK TRL	5,545	2007	$2,381,231	$1,203,265	$1,177,966	97.9%	$23,442
2XXX KODIAK CV	3,886	2024	$1,997,020	$843,262	$1,153,758	136.8%	$22,960
3XXX KENAI DR	3,837	2007	$1,982,980	$832,629	$1,150,351	138.2%	$22,892
5XX KODIAK TRL	5,160	2007	$2,260,986	$1,119,720	$1,141,266	101.9%	$22,711
4XX KODIAK TRL	6,754	2007	$2,604,797	$1,465,618	$1,139,179	77.7%	$22,670
3XXX KENAI DR	5,127	2007	$2,246,404	$1,112,559	$1,133,845	101.9%	$22,564
3XXX JUNEAU DR	9,082	2006	$3,050,672	$1,970,794	$1,079,878	54.8%	$21,490
5XX KODIAK TRL	7,255	2006	$2,651,456	$1,574,335	$1,077,121	68.4%	$21,435
2XXX JUNEAU DR	5,402	2005	$2,246,456	$1,172,234	$1,074,222	91.6%	$21,377

Data: HCAD public records, Williamson County, ZIP 78613. 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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