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 $1,318,900
Avg Taxes in Key Biscayne: $35,600 / County Avg $18,500
Avg Sq. Ft. in Key Biscayne: 2,410 / County Avg 2,392
Avg Price per/sqft in Key Biscayne:$2058 / County Avg $551
Avg Year Built in Key Biscayne: 1982 / County Avg 1988
Avg Days on Website in Key Biscayne: 154 / County Avg 161
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Data Last Updated: September 28, 2026 8:57 PM UTC