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 75182 are overassessed?

24.6% of homes in Sunnyvale ZIP 75182 (189 of 767 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 Sunnyvale ZIP 75182?

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 · Sunnyvale

ZIP 75182 property tax overassessment report

24.6% of homes in Sunnyvale ZIP 75182 (189 of 767 parcels) are assessed more than 10% above what comparable-size homes in the same ZIP typically pay per square foot. Combined annual overpayment: $724,128.

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767

Homes in ZIP

189

Flagged as overassessed

24.6%

$178,203

Avg overage / home

$92,361

Typical value

~$26/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 75182

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
5XX E TRIPP RD	20,570	2014	$7,387,500	$534,820	$6,852,680	1281.3%	$149,388
5XX E TRIPP RD	12,521	2003	$4,081,220	$325,546	$3,755,674	1153.7%	$81,874
3XX TOWN EAST BLVD	7,447	2002	$3,128,070	$193,622	$2,934,448	1515.6%	$63,971
1XX PASCHALL RD	7,750	2015	$3,015,770	$201,500	$2,814,270	1396.7%	$61,351
4XX E TRIPP RD	7,893	2005	$2,880,200	$205,218	$2,674,982	1303.5%	$58,315
6XX E BERKELEY CIR	11,870	2022	$2,712,430	$308,620	$2,403,810	778.9%	$52,403
1XX EAST FORK RD	2,734	1992	$2,466,610	$71,084	$2,395,526	3370%	$52,222
3XX TOWN EAST BLVD	5,509	1998	$2,450,270	$143,234	$2,307,036	1610.7%	$50,293
3XX OAK HOLLOW LN	6,565	2018	$2,448,410	$170,690	$2,277,720	1334.4%	$49,654
3XX TOWN EAST BLVD	5,771	1980	$2,278,000	$150,046	$2,127,954	1418.2%	$46,389
1XX PASCHALL RD	8,108	2000	$2,290,230	$210,808	$2,079,422	986.4%	$45,331
5XX N COLLINS RD	5,678	2022	$2,146,350	$147,628	$1,998,722	1353.9%	$43,572
3XX HIDDEN LEAF CIR	5,992	2023	$2,120,220	$155,792	$1,964,428	1260.9%	$42,825
3XX TOWN EAST BLVD	2,332	1983	$1,981,680	$60,632	$1,921,048	3168.4%	$41,879
2XX BARNES BRIDGE RD	3,348	2005	$2,000,000	$87,048	$1,912,952	2197.6%	$41,702
2XX ISLAND FALLS	9,392	2009	$1,977,310	$244,192	$1,733,118	709.7%	$37,782
5XX COLLINS RD	5,037	2000	$1,842,300	$130,962	$1,711,338	1306.7%	$37,307
1XX BARNES BRIDGE RD	7,833	2000	$1,902,500	$203,658	$1,698,842	834.2%	$37,035
2XX BARNES BRIDGE RD	3,026	1990	$1,694,170	$78,676	$1,615,494	2053.4%	$35,218
6XX W BERKELEY CIR	7,236	2011	$1,797,120	$188,136	$1,608,984	855.2%	$35,076
2XX TANNER CREEK CIR	7,661	2016	$1,799,710	$199,186	$1,600,524	803.5%	$34,891
4XX BANDERA LN	5,436	2019	$1,685,710	$141,336	$1,544,374	1092.7%	$33,667
3XX JOBSON RD	5,903	2002	$1,685,720	$153,478	$1,532,242	998.3%	$33,403
2XX TANNER CREEK CIR	10,197	2013	$1,759,990	$265,122	$1,494,868	563.8%	$32,588
6XX ST JAMES ALLEE	8,086	2011	$1,699,230	$210,236	$1,488,994	708.2%	$32,460

Data: HCAD public records, Dallas County, ZIP 75182. 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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