Market Summary

As of August 16, 2026, Key Biscayne has 158 active listings at a median list price of $2.5M ($1,152 per sqft). 137 homes closed in the past 12 months at a median sold price of $1.6M, implying 13.8 months of supply.

Based on MLS closed sales. Data current as of August 16, 2026.

For Sale in Key Biscayne

174 single-family homes & townhomes currently for sale · $19,099 – $237,000,000.

Key BiscayneFor Sale174 for sale · $19,099 – $237,000,000

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$237,000,000

TROPICAL ISLE HOMES RESUB5 BD · 9 BA · 11,528 SF

485 W Matheson Dr, Key Biscayne FL 33149

$29,900,000

CAPE FLORIDA SUB SEC 38 BD · 9 BA · 9,159 SF

241 Cape Florida Dr, Key Biscayne FL 33149

$29,900,000

CAPE FLORIDA SUB SEC 38 BD · 9 BA · 9,159 SF

241 Cape Florida Dr, Key Biscayne FL 33149

$29,500,000

CAPE FLORIDA SUB SEC 39 BD · 10 BA · 10,964 SF

260 Cape Florida Dr, Key Biscayne FL 33149

$26,000,000

GRAND BAY TOWER4 BD · 6 BA · 9,600 SF

430 Grand Bay Dr, Key Biscayne FL 33149

$25,900,000

TROPICAL ISLE HOMES SUB 44 BD · 4 BA · 2,566 SF

200 Harbor Dr, Key Biscayne FL 33149

174

Homes for Sale

$19K

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$237M

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158

Active Listings

$2.5M

Median List Price

$1,152

Median $/SqFt

13.8

Months of Supply

$1.6M

Median Sold (12mo)

137

Closed Sales

last 12 months

Buyer’s Market13.8 months of supply

Supply exceeds the current pace of sales — buyers have more leverage.