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 78204 are overassessed?

36.9% of homes in San Antonio ZIP 78204 (1,078 of 2,925 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 San Antonio ZIP 78204?

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 · San Antonio

ZIP 78204 property tax overassessment report

36.9% of homes in San Antonio ZIP 78204 (1,078 of 2,925 parcels) are assessed more than 10% above what comparable-size homes in the same ZIP typically pay per square foot. Combined annual overpayment: $1,118,204.

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2,925

Homes in ZIP

1,078

Flagged as overassessed

36.9%

$48,246

Avg overage / home

$243,812

Typical value

~$186/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 78204

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
4XX KING WILLIAM	6,897	1883	$3,033,280	$1,282,842	$1,750,438	136.5%	$34,484
2XX KING WILLIAM	5,598	1900	$2,210,000	$1,041,228	$1,168,772	112.2%	$23,025
2XX E GUENTHER	3,470	1893	$1,735,000	$645,420	$1,089,580	168.8%	$21,465
2XX KING WILLIAM	4,194	1890	$1,869,410	$780,084	$1,089,326	139.6%	$21,460
4XX KING WILLIAM	4,492	1887	$1,800,000	$835,512	$964,488	115.4%	$19,000
4XX KING WILLIAM	4,591	1883	$1,795,000	$853,926	$941,074	110.2%	$18,539
5XX KING WILLIAM	4,530	1890	$1,770,000	$842,580	$927,420	110.1%	$18,270
4XX KING WILLIAM	3,112	1878	$1,488,570	$578,832	$909,738	157.2%	$17,922
2XX KING WILLIAM	4,688	1870	$1,780,000	$871,968	$908,032	104.1%	$17,888
3XX MADISON	3,508	1900	$1,519,260	$652,488	$866,772	132.8%	$17,075
5XX KING WILLIAM	5,981	1883	$1,975,000	$1,112,466	$862,534	77.5%	$16,992
4XX KING WILLIAM	4,369	1877	$1,675,000	$812,634	$862,366	106.1%	$16,989
5XX MADISON	3,336	1920	$1,474,760	$620,496	$854,264	137.7%	$16,829
2XX KING WILLIAM	5,168	1890	$1,789,650	$961,248	$828,402	86.2%	$16,320
3XX MADISON	3,526	1910	$1,400,000	$655,836	$744,164	113.5%	$14,660
1XX W JOHNSON	1,955	1952	$1,101,480	$363,630	$737,850	202.9%	$14,536
5XX KING WILLIAM	3,030	1927	$1,294,340	$563,580	$730,760	129.7%	$14,396
3XX KING WILLIAM	4,452	1870	$1,555,000	$828,072	$726,928	87.8%	$14,320
4XX MADISON	3,490	1880	$1,375,690	$649,140	$726,550	111.9%	$14,313
2XX MADISON	4,215	1905	$1,500,000	$783,990	$716,010	91.3%	$14,105
4XX KING WILLIAM	4,622	1900	$1,575,000	$859,692	$715,308	83.2%	$14,092
3XX KING WILLIAM	3,468	1895	$1,350,000	$645,048	$704,952	109.3%	$13,888
2XX WASHINGTON	4,365	1900	$1,501,410	$811,890	$689,520	84.9%	$13,584
2XX E GUENTHER	2,962	1886	$1,225,000	$550,932	$674,068	122.4%	$13,279
4XX MADISON	2,850	1885	$1,190,000	$530,100	$659,900	124.5%	$13,000

Data: HCAD public records, Bexar County, ZIP 78204. 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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