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: $4,912,900 / County Avg $1,317,200
Avg Taxes in Key Biscayne: $35,000 / County Avg $18,400
Avg Sq. Ft. in Key Biscayne: 2,397 / County Avg 2,391
Avg Price per/sqft in Key Biscayne:$2049 / County Avg $551
Avg Year Built in Key Biscayne: 1981 / County Avg 1988
Avg Days on Website in Key Biscayne: 150 / County Avg 159
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Data Last Updated: September 24, 2026 10:49 AM UTC