What is a property tax appeal?

A property tax appeal (also called a protest in Texas, or a VAB petition in Florida) is a formal process where you challenge your county appraiser's assessed value of your home. You file with the county Appraisal Review Board (Texas) or Value Adjustment Board (Florida), present comparable-sales evidence that your home is overvalued, and the board issues a ruling.

When is the Florida property tax appeal deadline?

Florida property owners have 25 days from the date the TRIM (Truth in Millage) notice is mailed to file a VAB petition (Form DR-486). TRIM notices typically mail mid-August, putting the petition deadline in early-to-mid September. The deadline varies by county and is printed on the TRIM notice itself.

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 several hundred to several thousand dollars per year in Florida (Save Our Homes locks in the savings for 10+ years). 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 75137 are overassessed?

37.4% of homes in Duncanville ZIP 75137 (882 of 2,361 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 Duncanville ZIP 75137?

File a Notice of Protest with DCAD 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.

Dallas County · Duncanville

ZIP 75137 property tax overassessment report

37.4% of homes in Duncanville ZIP 75137 (882 of 2,361 parcels) are assessed more than 10% above what comparable-size homes in the same ZIP typically pay per square foot. Combined annual overpayment: $601,819.

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2,361

Homes in ZIP

882

Flagged as overassessed

37.4%

$31,736

Avg overage / home

$38,275

Typical value

~$22/sqft

Dallas County · over-assessed homes overpay year-round

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

Dallas County guide →

Top 25 most overassessed homes in 75137

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
6XX S LINCOLN DR	4,774	1960	$1,249,010	$105,028	$1,143,982	1089.2%	$24,939
1XXX BRAEWOOD PL	2,348	2007	$962,370	$51,656	$910,714	1763%	$19,854
2XXX S COCKRELL HILL RD	9,718	1983	$1,109,420	$213,796	$895,624	418.9%	$19,525
8XX W DANIELDALE RD	5,764	2023	$991,000	$126,808	$864,192	681.5%	$18,839
1XXX CEDAR HILL RD	2,685	1962	$890,000	$59,070	$830,930	1406.7%	$18,114
4XX W VINYARD RD	4,214	1983	$826,700	$92,708	$733,992	791.7%	$16,001
1XXX GREEN VALLEY LN	2,838	2016	$794,680	$62,436	$732,244	1172.8%	$15,963
1XXX GREENBRIAR LN	3,978	2020	$807,020	$87,516	$719,504	822.1%	$15,685
1XXX CEDAR HILL RD	4,244	1975	$798,600	$93,368	$705,232	755.3%	$15,374
1XXX CREEKHAVEN	4,454	2014	$784,010	$97,988	$686,022	700.1%	$14,955
2XX SOFTWOOD DR	2,905	1966	$748,150	$63,910	$684,240	1070.6%	$14,916
1XXX S CLARK RD	5,297	1979	$798,540	$116,534	$682,006	585.2%	$14,868
1XXX CEDAR HILL RD	5,088	1973	$761,610	$111,936	$649,674	580.4%	$14,163
2XXX S COCKRELL HILL RD	5,155	2000	$760,870	$113,410	$647,460	570.9%	$14,115
1XXX S CLARK RD	6,083	1971	$762,550	$133,826	$628,724	469.8%	$13,706
9XX GREEN TREE LN	10,668	1982	$857,560	$234,696	$622,864	265.4%	$13,578
1XXX HALSEY DR	4,483	2015	$716,290	$98,626	$617,664	626.3%	$13,465
7XX LINKCREST DR	3,300	2023	$685,600	$72,600	$613,000	844.4%	$13,363
8XX BIG STONE GAP	2,648	1961	$670,270	$58,256	$612,014	1050.6%	$13,342
1XXX TIMBERLINE DR	4,481	2013	$703,460	$98,582	$604,878	613.6%	$13,186
1XXX MCARTHUR DR	4,266	2014	$696,370	$93,852	$602,518	642%	$13,135
1XXX MARSHALL DR	4,505	2009	$700,650	$99,110	$601,540	606.9%	$13,114
1XXX GREEN TREE LN	6,266	1985	$738,410	$137,852	$600,558	435.7%	$13,092
1XXX MARSHALL DR	4,477	2014	$692,500	$98,494	$594,006	603.1%	$12,949
1XXX BRADLEY DR	4,537	2007	$690,600	$99,814	$590,786	591.9%	$12,879

Data: HCAD public records, Dallas County, ZIP 75137. 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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