12th St, Key Colony Beach, FL Property Records

Monroe County property records for 53 addresses on 12th St, Key Colony Beach, FL · Last verified August 2026

12th St Highlights

Properties 53
Median Sale Price $2,125,000
Deeds and Mortgages on File 79
Median Price per Sqft $809
Owner Occupied 34%
Median Annual Tax Bill $14,023
Median Year Built 1989
Median Ownership Tenure 6 years

Properties on 12th St

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

100 12th St

4 bd · 3 ba · 3,497 sqft · built 1961 · 0.645 acres

Last Sale Tax Bill Prior Sale Owner Records
—Apr 2020 $20,0562025 Amount on Record Sep 2015 1 Name on Record Assessor + 1 DocumentUpdated May 2026

150 12th St

5 bd · 5 ba · 4,536 sqft · built 2006 · 0.309 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,610,000Jul 2025 $31,1232024 Amount on Record Oct 2020 2 Names on Record Assessor + 1 DocumentUpdated Dec 2025

161 12th St

5 bd · 5 ba · 5,185 sqft · built 2006 · 0.79 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,200,000Mar 2020 $59,0932024 1 Name on Record Assessor + 2 DocumentsUpdated Dec 2025

180 12th St

3 bd · 2 ba · 1,886 sqft · built 1960 · 0.224 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,125,000Nov 2025 $6,5552024 Amount on Record May 2021 1 Name on Record Assessor + 3 DocumentsUpdated Dec 2025

181 12th St

3 bd · 2 ba · 1,965 sqft · built 1997 · 0.383 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,750,000Jun 2021 $15,4382025 —Oct 2006 1 Name on Record Assessor + 1 DocumentUpdated Jun 2026

201 12th St

3 bd · 2 ba · 2,088 sqft · built 1998 · 0.247 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,900,000Apr 2025 $17,3192025 Amount on Record Mar 2022 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

220 12th St

4 bd · 3 ba · 2,094 sqft · built 2002 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$162,000Jan 1999 $12,3482024 Amount on Record Jun 1996 2 Names on Record AssessorUpdated Dec 2025

221 12th St

3 bd · 2.5 ba · 2,543 sqft · built 1985 · 0.247 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,675,000Nov 2021 $18,1102025 Amount on Record Jun 1995 1 Name on Record Assessor + 1 DocumentUpdated May 2026

240 12th St

4 bd · 2 ba · 1,810 sqft · built 1966 · 0.196 acres

Last Sale Tax Bill Prior Sale Owner Records
$650,000Mar 2015 $11,3032025 Amount on Record Apr 1997 1 Name on Record Assessor + 2 DocumentsUpdated Aug 2026

241 12th St

3 bd · 3.5 ba · 4,188 sqft · built 1991 · 0.247 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,150,000Jun 2023 $16,8332025 Amount on Record Jun 1987 2 Names on Record Assessor + 2 DocumentsUpdated Jul 2026

260 12th St

2 bd · 2.5 ba · 3,317 sqft · built 1960 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$750,000Jul 2003 $5,8282024 Amount on Record Apr 1991 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

261 12th St

4 bd · 2.5 ba · 3,680 sqft · built 1989 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,430,000Jun 2026 $15,8802025 Amount on Record Oct 2018 1 Name on Record Assessor + 3 DocumentsUpdated Jul 2026

280 12th St

3 bd · 3.5 ba · 1,731 sqft · built 1961 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$846,000Apr 2019 $10,7642024 Amount on Record Mar 2001 2 Names on Record Assessor + 3 DocumentsUpdated Apr 2026

281 12th St

5 bd · 7 ba · 4,074 sqft · built 2022 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
$500,000Sep 2019 $18,3102024 Amount on Record Sep 2014 1 Name on Record Assessor + 3 DocumentsUpdated Apr 2026

301 12th St

4 bd · 4 ba · 2,750 sqft · built 2003 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$130,000Oct 1987 $16,8082024 Amount on Record Jul 1987 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

331 12th St

3 bd · 2.5 ba · 2,691 sqft · built 2013 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$100Sep 2019 $13,6642024 Amount on Record Feb 2012 1 Name on Record Assessor + 1 DocumentUpdated Apr 2026

351 12th St

3 bd · 3 ba · 1,440 sqft · built 1983 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,425,000Jul 2005 $12,0732024 1 Name on Record AssessorUpdated Dec 2025

360 12th St

4 bd · 3 ba · 3,578 sqft · built 1977 · 0.423 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,840,000Jul 2026 $22,5932025 Amount on Record Sep 2022 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

371 12th St

3 bd · 2 ba · 2,826 sqft · built 1985 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,705,000Aug 2022 $16,3262024 Amount on Record Nov 2017 2 Names on Record Assessor + 3 DocumentsUpdated Apr 2026

391 12th St

2 bd · 2 ba · 3,939 sqft · built 1984 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$720,000May 2009 $13,5612024 Amount on Record Nov 2003 2 Names on Record Assessor + 2 DocumentsUpdated May 2026

411 12th St

3 bd · 2 ba · 3,434 sqft · built 1984 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$684,000Aug 2012 $9,2752025 Amount on Record Aug 2006 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

431 12th St

4 bd · 4 ba · 4,369 sqft · built 1993 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,630,000Aug 2020 $14,0232025 Amount on Record Aug 2013 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jun 2026

451 12th St

3 bd · 3 ba · 2,520 sqft · built 1984 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$600,000Apr 2014 $14,4912024 Amount on Record Jan 1997 2 Names on Record AssessorUpdated Dec 2025

471 12th St

2 bd · 3 ba · 2,256 sqft · built 1987 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$46,000May 1983 $11,3502024 1 Name on Record AssessorUpdated Dec 2025

500 12th St

5 bd · 5 ba · 3,350 sqft · built 2023 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$510,000Aug 2020 $24,5662024 Amount on Record May 1995 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Dec 2025

501 12th St

2 bd · 3 ba · 4,294 sqft · built 2003 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$900,000Dec 2011 $9,9202025 —Dec 2010 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

510 12th St

2 bd · 4 ba · 2,052 sqft · built 2012 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,550,000Oct 2025 $6,6752024 Amount on Record Dec 2011 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Dec 2025

520 12th St

2 bd · 2 ba · 1,911 sqft · built 1985 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,125,000Apr 2026 $6,1182024 Amount on Record Dec 2024 1 Name on Record Assessor + 2 DocumentsUpdated May 2026

521 12th St

2 bd · 2 ba · 1,470 sqft · built 1983 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,550,000Apr 2024 $7,4092024 Amount on Record Aug 1999 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Dec 2025

540 12th St

2 bd · 2 ba · 1,636 sqft · built 1971 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,325,000Jan 2024 $5,2712024 Amount on Record Mar 2003 3 Names on Record Assessor + 1 DocumentUpdated Dec 2025

541 12th St

3 bd · 3 ba · 2,932 sqft · built 1984 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,200,000Nov 2024 $13,6122024 Amount on Record Aug 2012 1 Name on Record Assessor + 1 DocumentUpdated Apr 2026

560 12th St

2 bd · 2.5 ba · 3,210 sqft · built 2009 · 0.347 acres

Last Sale Tax Bill Prior Sale Owner Records
$680,000May 2003 $10,1392024 2 Names on Record Owner Occupied AssessorUpdated Apr 2026

561 12th St

3 bd · 3 ba · 1,716 sqft · built 1998 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$875,000Sep 2009 $7,8692024 Amount on Record Jun 1999 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

581 12th St

3 bd · 2 ba · 1,800 sqft · built 1982 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$100Jan 2020 $9,0642024 Amount on Record Aug 2001 2 Names on Record Assessor + 2 DocumentsUpdated Apr 2026

641 12th St

3 bd · 3 ba · 2,001 sqft · built 1999 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,700,000Jul 2023 $15,1112025 Amount on Record Jun 1999 2 Names on Record Assessor + 2 DocumentsUpdated Aug 2026

660 12th St

2 bd · 2 ba · 3,118 sqft · built 1987 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,835,000Apr 2024 $13,3262024 Amount on Record Jun 2015 2 Names on Record Owner Occupied AssessorUpdated Apr 2026

661 12th St

2 bd · 3 ba · 1,480 sqft · built 1984 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,875,000Dec 2025 $10,7762024 Amount on Record Aug 2021 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jan 2026

680 12th St

3 bd · 2 ba · 1,697 sqft · built 1976 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$448,900Dec 2022 $9,6102025 Amount on Record Sep 2018 1 Name on Record Owner Occupied Assessor + 4 DocumentsUpdated May 2026

681 12th St

3 bd · 5 ba · 1,873 sqft · built 1987 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$520,000Apr 1998 $13,1702024 1 Name on Record AssessorUpdated Dec 2025

700 12th St

4 bd · 4 ba · 4,180 sqft · built 2020 · 0.284 acres

Last Sale Tax Bill Prior Sale Owner Records
$535,000Apr 2018 $23,0352024 1 Name on Record Assessor + 1 DocumentUpdated Dec 2025

701 12th St

3 bd · 3 ba · 2,143 sqft · built 1989 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,250,000Apr 2024 $16,1772024 Amount on Record Apr 2014 2 Names on Record Assessor + 1 DocumentUpdated Dec 2025

731 12th St

3 bd · 4 ba · 3,490 sqft · built 1997 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,395,000Dec 2002 $9,9892024 Amount on Record May 1995 2 Names on Record Owner Occupied AssessorUpdated Dec 2025

740 12th St

3 bd · 2.5 ba · 2,389 sqft · built 1994 · 0.284 acres

Last Sale Tax Bill Prior Sale Owner Records
—Sep 2016 $10,1512024 Amount on Record Jun 2009 1 Name on Record Owner Occupied AssessorUpdated Apr 2026

751 12th St

4 bd · 4 ba · 5,094 sqft · built 2015 · 0.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,525,000Feb 2022 $31,8012025 Amount on Record May 2014 1 Name on Record Assessor + 1 DocumentUpdated May 2026

760 12th St

4 bd · 4 ba · 3,737 sqft · built 1992 · 0.284 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,400,000Dec 2012 $20,3782024 2 Names on Record Assessor + 1 DocumentUpdated Dec 2025

771 12th St

4 bd · 3.5 ba · 3,878 sqft · built 1986 · 0.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,295,000Sep 2014 $11,7452024 Amount on Record Mar 1982 2 Names on Record Owner Occupied AssessorUpdated Apr 2026

800 12th St

4 bd · 3 ba · 2,024 sqft · built 1973 · 0.284 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,950,000Apr 2022 $23,5102025 Amount on Record May 2021 1 Name on Record Assessor + 4 DocumentsUpdated Jul 2026

811 12th St

3 bd · 4.5 ba · 4,162 sqft · built 1987 · 0.247 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,999,000Jun 2022 $28,1092024 Amount on Record Jun 1992 1 Name on Record Assessor + 1 DocumentUpdated Apr 2026

820 12th St

6 bd · 3.5 ba · 3,333 sqft · built 1993 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,899,000Apr 2022 $22,5312025 —Sep 2020 1 Name on Record Assessor + 2 DocumentsUpdated Jun 2026

831 12th St

4 bd · 4 ba · 2,314 sqft · built 1991 · 0.247 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,630,000Jan 2021 $18,8592024 Amount on Record Apr 2015 2 Names on Record Assessor + 1 DocumentUpdated Dec 2025

840 12th St

6 bd · 5 ba · 4,932 sqft · built 1992 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,820,000Dec 2021 $26,6712024 Amount on Record Jan 2018 2 Names on Record Assessor + 4 DocumentsUpdated Aug 2026

860 12th St

3 bd · 4 ba · 4,441 sqft · built 2009 · 0.295 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,700,000Jul 2007 $14,0932024 3 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Dec 2025

861 12th St

4 bd · 3 ba · 4,514 sqft · built 1984 · 0.567 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,300,000Aug 2024 $40,7972024 Amount on Record May 2022 1 Name on Record Assessor + 1 DocumentUpdated Dec 2025

Wildfire Risk on 12th St

Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020

Wildfire RiskNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach

Property Records in Nearby Streets