Key Biscayne Real Estate
240 Galen Dr 302
$3,100
485 W Matheson Dr
$237,000,000
100 Sunrise Dr 25
$1400
Key Biscayne Listings Summary
Key Biscayne - Town vs. County Stats
Avg Price in Key Biscayne: $4,958,900 / County Avg $1,319,100
Avg Taxes in Key Biscayne: $35,600 / County Avg $18,500
Avg Sq. Ft. in Key Biscayne: 2,410 / County Avg 2,388
Avg Price per/sqft in Key Biscayne:$2058 / County Avg $552
Avg Year Built in Key Biscayne: 1982 / County Avg 1988
Avg Days on Website in Key Biscayne: 152 / County Avg 160
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Data Last Updated: September 26, 2026 8:00 PM UTC