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 $49 for a complete personalized appeal packet you file yourself, or $199-$249 for our done-for-you filing service. Ownwell charges a 25-35% contingency on whatever you save — meaning a $2,000 reduction costs you $500-$700 every year forever. We keep 100% of your savings.

What percent of homes in ZIP 33578 are overassessed?

13.2% of homes in Riverview ZIP 33578 (486 of 3,692 parcels) are assessed more than 10% above the typical per-square-foot value for the neighborhood, based on the FL DOR 2025 Final NAL roll.

How do I appeal my property taxes in Riverview ZIP 33578?

File Form DR-486 with the Hillsborough County Value Adjustment Board within 25 days of your TRIM notice (typically mid-August). The $15 filing fee is paid to the Clerk of Court. Strong petitions include 3-5 comparable sales from your immediate area.

Hillsborough County · Riverview

ZIP 33578 property tax overassessment report

13.2% of homes in Riverview ZIP 33578 (486 of 3,692 parcels) are assessed more than 10% above what comparable-size homes in the same ZIP typically pay per square foot. Combined annual overpayment: $456,408.

Check my address (free) →Hillsborough County guide

★ First 100 FL packets at $49 (62 left, then $79 starting June 1) · 30-day refund · Ownwell takes 25-35%

3,692

Homes in ZIP

486

Flagged as overassessed

13.2%

$109,199

Avg overage / home

$312,169

Typical value

~$149/sqft

Your Hillsborough County deadline

TRIM mailing: Aug 14, 2026 · VAB petition due: Sept 8, 2026

Hillsborough filing guide →

Top 25 most overassessed homes in 33578

Addresses anonymized. Pulled directly from the FL DOR 2025 Final NAL roll. Each home pays significantly more than what a comparable-size home in this ZIP typically pays.

Address	Sq ft	Year	Just value	Expected	Overage	% over	$/yr
8XXX KEY WEST ISLAND WAY	6,588	2020	$2,370,915	$981,612	$1,389,303	141.5%	$11,948
8XXX EAGLE WATCH DR	5,178	1988	$2,006,608	$771,522	$1,235,086	160.1%	$10,622
8XXX KEY WEST ISLAND WAY	9,147	2021	$2,475,115	$1,362,903	$1,112,212	81.6%	$9,565
7XXX RIVERVIEW DR	4,022	1989	$1,449,677	$599,278	$850,399	141.9%	$7,313
8XXX KEY WEST ISLAND WAY	6,328	2009	$1,771,418	$942,872	$828,546	87.9%	$7,125
8XXX RIVERLACHEN WAY	7,015	2022	$1,804,206	$1,045,235	$758,971	72.6%	$6,527
7XXX LONE STAR PL	7,226	2022	$1,797,108	$1,076,674	$720,434	66.9%	$6,196
8XXX KEY WEST ISLAND WAY	9,092	2008	$1,997,559	$1,354,708	$642,851	47.5%	$5,529
7XXX RIVERVIEW DR	3,228	2007	$1,056,472	$480,972	$575,500	119.7%	$4,949
8XXX EAGLE WATCH DR	3,325	1992	$982,798	$495,425	$487,373	98.4%	$4,191
8XXX ALAFIA WAY	4,778	1999	$1,175,548	$711,922	$463,626	65.1%	$3,987
8XXX STILLWATERS LANDING DR	4,391	2002	$1,097,812	$654,259	$443,553	67.8%	$3,815
8XXX ALAFIA WAY	7,557	1994	$1,568,677	$1,125,993	$442,684	39.3%	$3,807
8XXX KEY WEST CONCH DR	4,102	2017	$1,047,987	$611,198	$436,789	71.5%	$3,756
8XXX KEY WEST ISLAND WAY	4,107	2014	$1,008,216	$611,943	$396,273	64.8%	$3,408
8XXX STILLWATERS LANDING DR	5,096	1998	$1,131,910	$759,304	$372,606	49.1%	$3,204
7XXX LONE STAR PL	3,383	1994	$866,393	$504,067	$362,326	71.9%	$3,116
8XXX STILLWATERS LANDING DR	5,134	1999	$1,125,628	$764,966	$360,662	47.1%	$3,102
8XXX RIVERLACHEN WAY	2,869	1995	$786,715	$427,481	$359,234	84%	$3,089
8XXX EAGLE WATCH DR	5,394	1993	$1,161,039	$803,706	$357,333	44.5%	$3,073
7XXX RIVERVIEW DR	2,499	1900	$724,636	$372,351	$352,285	94.6%	$3,030
8XXX KEY WEST CONCH DR	3,205	2016	$825,835	$477,545	$348,290	72.9%	$2,995
8XXX STILLWATERS LANDING DR	5,889	2000	$1,224,255	$877,461	$346,794	39.5%	$2,982
8XXX KEY WEST ISLAND WAY	3,800	2010	$912,020	$566,200	$345,820	61.1%	$2,974
8XXX KEY WEST CONCH DR	3,372	2016	$842,650	$502,428	$340,222	67.7%	$2,926

Data: FL DOR 2025 Final NAL roll, Hillsborough County, ZIP 33578. Addresses anonymized to protect privacy; full data is public record under Fla. Stat. Ch. 119. Showing top 25 — there are likely more overassessed homes in this ZIP.

Is yours one of them?

Search your address — we'll show your specific overassessment estimate in 30 seconds. Then when HillsboroughCounty's TRIM notice mails this August, you'll have a $49 DR-486 packet ready to file with the VAB.

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