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 78666 are overassessed?

21.9% of homes in Killeen ZIP 78666 (32 of 146 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 78666?

File a Notice of Protest with BCAD 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.

Bexar County · Killeen

ZIP 78666 property tax overassessment report

21.9% of homes in Killeen ZIP 78666 (32 of 146 parcels) are assessed more than 10% above what comparable-size homes in the same ZIP typically pay per square foot. Combined annual overpayment: $17,868.

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146

Homes in ZIP

Flagged as overassessed

21.9%

$25,971

Avg overage / home

$198,315

Typical value

~$140/sqft

Bexar County · over-assessed homes overpay year-round

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

Bexar County guide →

Top 25 most overassessed homes in 78666

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 WAGGONER DR	2,785	2021	$609,028	$389,900	$219,128	56.2%	$4,317
1XXX EAGLE MOUNTAIN	3,046	2017	$600,000	$426,440	$173,560	40.7%	$3,419
2XXX DEER LEDGE ST	1,989	1970	$410,250	$278,460	$131,790	47.3%	$2,596
8XXX KELLY LN	2,364	2025	$446,250	$330,960	$115,290	34.8%	$2,271
8XX W MISTLETOE AVE	1,132	1917	$258,620	$158,480	$100,140	63.2%	$1,973
1XXXX PRONGHORN OAK	1,465	2015	$292,970	$205,100	$87,870	42.8%	$1,731
5XX MOCCASIN DR	1,608	1996	$307,794	$225,120	$82,674	36.7%	$1,629
7XX E CARSON ST	1,454	1930	$285,000	$203,560	$81,440	40%	$1,604
4XXX HIGHMONT DR	1,401	2020	$269,011	$196,140	$72,871	37.2%	$1,436
2XX WHISPERING OAKS	1,168	1967	$235,370	$163,520	$71,850	43.9%	$1,415
8XX NEVADA ST	780	1919	$181,020	$109,200	$71,820	65.8%	$1,415
9XXX RIDGE BREEZE	1,164	1986	$230,050	$162,960	$67,090	41.2%	$1,322
6XX HOOD ST	840	1990	$182,910	$117,600	$65,310	55.5%	$1,287
5XX NECHES DR	2,205	1993	$370,700	$308,700	$62,000	20.1%	$1,221
5XXX SPRING CABIN	1,238	1987	$233,620	$173,320	$60,300	34.8%	$1,188
8XX PASO HONDO	1,048	1940	$204,783	$146,720	$58,063	39.6%	$1,144
7XXX AUTUMN PARK	1,791	1986	$307,820	$250,740	$57,080	22.8%	$1,124
6XX OLNEY DR	1,324	1954	$242,030	$185,360	$56,670	30.6%	$1,116
5XXX LOST CRK	1,028	1979	$199,000	$143,920	$55,080	38.3%	$1,085
4XXX LORELEI DR	1,328	1961	$240,000	$185,920	$54,080	29.1%	$1,065
9XX FAIR AVE	781	1939	$162,000	$109,340	$52,660	48.2%	$1,037
1XXXX STONEY PARK	964	1983	$187,200	$134,960	$52,240	38.7%	$1,029
5XXX TIMBER GATE ST	1,944	1979	$322,430	$272,160	$50,270	18.5%	$990
4XXX LONGVALE DR	1,386	1968	$243,610	$194,040	$49,570	25.5%	$977
1XXXX GREEN LAKE DR	1,247	2022	$222,550	$174,580	$47,970	27.5%	$945

Data: HCAD public records, Bexar County, ZIP 78666. 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 BexarCounty 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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