Miami-Dade County property records for 19 addresses on Mariner Dr, Key Biscayne, FL · Last verified August 2026
| Properties | 19 |
|---|---|
| Median Sale Price | $9,300,000 |
| Deeds and Mortgages on File | 16 |
| Median Price per Sqft | $2,555 |
| Owner Occupied | 74% |
| Median Annual Tax Bill | $107,680 |
| Median Year Built | 1979 |
| Median Ownership Tenure | 7 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
0.367 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $48,500Aug 2019 | $102,4272025 | —Jan 2011 | 2 Names on Record | Assessor + 1 DocumentUpdated Feb 2026 |
7 bd · 6 ba · 6,432 sqft · 0.396 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $9,300,000Jun 2021 | $140,1692024 | Amount on Record Apr 2015 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Apr 2026 |
4 bd · 6 ba · 4,440 sqft · 0.345 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,025,000Apr 2016 | $76,0552025 | —Dec 2010 | 2 Names on Record Owner Occupied | AssessorUpdated Feb 2026 |
4 bd · 6 ba · 5,191 sqft · 0.341 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,700,000May 2025 | $105,5982024 | Amount on Record Mar 2021 | 1 Name on Record | Assessor + 3 DocumentsUpdated Apr 2026 |
6 bd · 9 ba · 7,742 sqft · 0.337 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,290,000May 2014 | $152,8472025 | Amount on Record May 2000 | 1 Name on Record | AssessorUpdated Aug 2026 |
4 bd · 3 ba · 3,098 sqft · 0.323 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $8,450,000Aug 2022 | $108,2062025 | Amount on Record Apr 2010 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Feb 2026 |
4 bd · 3 ba · 4,155 sqft · 0.364 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,350,000Nov 1999 | $35,2992025 | 2 Names on Record Owner Occupied | AssessorUpdated Feb 2026 |
5 bd · 4 ba · 4,620 sqft · 0.323 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $26,2012025 | Amount on Record Mar 1995 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Feb 2026 |
3 bd · 4 ba · 3,824 sqft · 0.364 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $103,3712025 | 3 Names on Record Owner Occupied | AssessorUpdated Feb 2026 |
4 bd · 5.5 ba · 5,760 sqft · 0.323 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $15,650,000Aug 2024 | $131,1612024 | Amount on Record Jun 2021 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Apr 2026 |
6 bd · 8 ba · 7,318 sqft · 0.364 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,750,000Apr 2010 | $123,5262025 | Amount on Record Apr 2002 | 1 Name on Record Owner Occupied | AssessorUpdated Feb 2026 |
3 bd · 3 ba · 4,069 sqft · 0.323 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,100,000Jun 2012 | $101,3072025 | —Dec 2007 | 1 Name on Record Owner Occupied | AssessorUpdated Feb 2026 |
4 bd · 3 ba · 3,898 sqft · 0.364 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $8,200,000Apr 2022 | $114,8552024 | Amount on Record Jun 1999 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Apr 2026 |
4 bd · 2.5 ba · 3,111 sqft · 0.401 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,950,000Feb 2022 | $120,4052024 | Amount on Record Aug 1996 | 1 Name on Record | Assessor + 3 DocumentsUpdated Apr 2026 |
4 bd · 5 ba · 3,422 sqft · 0.375 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,420,000Feb 2022 | $107,6802025 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Feb 2026 |
5 bd · 4 ba · 3,983 sqft · 0.323 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,020,000Jun 2002 | $42,7912025 | Amount on Record Dec 2001 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
6 bd · 6 ba · 6,468 sqft · 0.296 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,100,000Apr 2012 | $138,6762025 | Amount on Record Oct 2010 | 1 Name on Record Owner Occupied | AssessorUpdated Feb 2026 |
4 bd · 3 ba · 2,143 sqft · 0.602 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,300,000Mar 2000 | $49,9342025 | Amount on Record Apr 1996 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Feb 2026 |
7 bd · 6 ba · 6,161 sqft · 0.608 acres · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $18,000,000Apr 2024 | $205,4362025 | Amount on Record Mar 2004 | 1 Name on Record | Assessor + 1 DocumentUpdated Feb 2026 |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020
| Wildfire Risk | Low this street's cells rank at the 25th percentile of exposed land nationally · 10th in Florida |
|---|---|
| Wildfire Likelihood | Low — about 1 in 2,222 per year |
| Exposure | Direct 1 of 2 cells directly exposed · 1 adjoin burnable vegetation |