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 78615 are overassessed?

35.5% of homes in Bartlett ZIP 78615 (156 of 439 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 Bartlett ZIP 78615?

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 · Bartlett

ZIP 78615 property tax overassessment report

35.5% of homes in Bartlett ZIP 78615 (156 of 439 parcels) are assessed more than 10% above what comparable-size homes in the same ZIP typically pay per square foot. Combined annual overpayment: $1,017,285.

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439

Homes in ZIP

156

Flagged as overassessed

35.5%

$303,305

Avg overage / home

$524,120

Typical value

~$1215/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 6 most overassessed homes in 78615

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
2XXX FM 1466	800	—	$2,376,574	$972,000	$1,404,574	144.5%	$27,951
6XXX FM 1466	1,482	—	$2,889,105	$1,800,630	$1,088,475	60.4%	$21,661
3XXX FM 1466	1,408	2009	$2,648,704	$1,710,720	$937,984	54.8%	$18,666
5XX CR 468	682	—	$1,346,255	$828,630	$517,625	62.5%	$10,301
1XXX CR 469	1,248	1930	$1,909,099	$1,516,320	$392,779	25.9%	$7,816
CR 469	1,300	1935	$1,930,494	$1,579,500	$350,994	22.2%	$6,985

Data: HCAD public records, Williamson County, ZIP 78615. Addresses anonymized to protect privacy; full data is public record under Texas Public Information Act.

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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