What is a property tax appeal?

A property tax appeal (also called a protest) is a formal process where you challenge your county appraisal district's assessed value of your home. In Texas, you file a protest with your county's Appraisal Review Board (ARB), present evidence that your home is overvalued, and the ARB issues a ruling.

What's the deadline to file a property tax protest in Texas?

In Texas, the deadline to file a property tax protest is May 15, 2026 (or 30 days after your appraisal notice is mailed, whichever is later). There are no extensions.

How much can I save by appealing my property taxes?

Texas homeowners who appeal save an average of $774 per year. Success rates range from 80-91% when homeowners bring comparable sales evidence.

What percent of homes in ZIP 33037 are overassessed?

26.1% of homes in Key Largo ZIP 33037 (2,366 of 9,080 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 Key Largo ZIP 33037?

File Form DR-486 with the Monroe 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.

Monroe County · Key Largo

ZIP 33037 property tax overassessment report

26.1% of homes in Key Largo ZIP 33037 (2,366 of 9,080 parcels) are assessed more than 10% above what comparable-size homes in the same ZIP typically pay per square foot. Combined annual overpayment: $20,706,985.

Check your address →Monroe County guide

9,080

Homes in ZIP

2,366

Flagged as overassessed

26.1%

$1,017,662

Avg overage / home

$1,149,881

Typical value

~$733/sqft

Your Monroe County deadline

TRIM mailing: Aug 21, 2026 · VAB petition due: Sept 15, 2026

Monroe filing guide →

Top 25 most overassessed homes in 33037

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
2X MARINA Dr A	1,421	1978	$4,966,418	$1,041,593	$3,924,825	376.8%	$33,753
1X HALFWAY Rd	870	1973	$4,553,582	$637,710	$3,915,872	614.1%	$33,676
4 MARINA Dr A	1,400	1978	$4,941,281	$1,026,200	$3,915,081	381.5%	$33,670
9XXXX OVERSEAS Hwy	1,137	1970	$4,533,502	$833,421	$3,700,081	444%	$31,821
4X MOORINGS B	1,781	1983	$4,978,931	$1,305,473	$3,673,458	281.4%	$31,592
1X OCEAN REEF Dr	1,694	1982	$4,907,979	$1,241,702	$3,666,277	295.3%	$31,530
9X SNAPPER Ln B	1,307	1974	$4,581,807	$958,031	$3,623,776	378.3%	$31,164
2 MARINA Dr A	1,400	1978	$4,646,341	$1,026,200	$3,620,141	352.8%	$31,133
2X MARINA Dr B	1,421	1978	$4,629,731	$1,041,593	$3,588,138	344.5%	$30,858
2X MARINA Dr B	1,421	1978	$4,629,731	$1,041,593	$3,588,138	344.5%	$30,858
6X PUMPKIN CAY Rd B	1,307	1974	$4,543,165	$958,031	$3,585,134	374.2%	$30,832
1X MARINA Dr A	1,400	1978	$4,604,275	$1,026,200	$3,578,075	348.7%	$30,771
1X MARINA Dr A	1,400	1978	$4,604,275	$1,026,200	$3,578,075	348.7%	$30,771
1X MARINA Dr B	1,400	1978	$4,587,181	$1,026,200	$3,560,981	347%	$30,624
1X MARINA Dr B	1,400	1978	$4,587,181	$1,026,200	$3,560,981	347%	$30,624
1X MARINA Dr B	1,400	1978	$4,587,181	$1,026,200	$3,560,981	347%	$30,624
2X MARINA Dr B	1,400	1978	$4,587,181	$1,026,200	$3,560,981	347%	$30,624
3X MOORINGS Dr A	1,845	1983	$4,870,892	$1,352,385	$3,518,507	260.2%	$30,259
8 HALFWAY Rd	1,816	1973	$4,849,417	$1,331,128	$3,518,289	264.3%	$30,257
4X MOORINGS A	1,837	1983	$4,859,540	$1,346,521	$3,513,019	260.9%	$30,212
4X HARBOUR GREEN Dr	2,029	1984	$4,990,102	$1,487,257	$3,502,845	235.5%	$30,124
5X HARBOUR GREEN Dr	2,029	1984	$4,990,102	$1,487,257	$3,502,845	235.5%	$30,124
46B ANCHOR Dr	1,391	1972	$4,515,948	$1,019,603	$3,496,345	342.9%	$30,069
4 HALFWAY Rd	2,016	1973	$4,948,411	$1,477,728	$3,470,683	234.9%	$29,848
9 HARBOUR GREEN Dr	2,029	1984	$4,941,165	$1,487,257	$3,453,908	232.2%	$29,704

Data: FL DOR 2025 Final NAL roll, Monroe County, ZIP 33037. 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 MonroeCounty's TRIM notice mails this August, you'll have a $49 DR-486 packet ready to file with the VAB.

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