Key Biscayne Real Estate
631 N Mashta Drive
$18,500,000
631 N Mashta Drive
$18,500,000
24 Grand Bay Estates Circle
$4950000
Key Biscayne Listings Summary
Key Biscayne - Town vs. County Stats
Avg Price in Key Biscayne: $6,236,900 / County Avg $935,700
Avg Taxes in Key Biscayne: $45,100 / County Avg $9,900
Avg Sq. Ft. in Key Biscayne: 2,873 / County Avg 1,687
Avg Price per/sqft in Key Biscayne:$2171 / County Avg $555
Avg Year Built in Key Biscayne: 1985 / County Avg 1983
Avg Days on Website in Key Biscayne: 1982 / County Avg 1083
Key Biscayne Real Estate Market Health
| Neighborhoods in Key Biscayne FL |
|---|
| GALEN DRIVE WEST CONDOMIN |
| GRAND KEY ESTATES |
| Key Colony |
| KEY COLONY NO 4 CONDO |
| MASHTA ISLAND |
| Ocean Club Key Biscayne |
| OCEANA |
| OCEANA KEY BISCAYNE CONDO |
| TROPICAL ISLE HOMES |
The IDX data relating to real estate for sale on this web site comes in part from the Martin County REALTORS ® of the Treasure Coast. The information being provided is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.
© 2026 Florida Gulf Coast MLS (FGCMLS) Information deemed reliable, but not guaranteed. The IDX data relating to real estate for sale on this web site comes in part from the Florida Gulf Coast Multiple Listing Service. The information being provided is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.
All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data relating