Homes for Sale in Key Biscayne, FL

Key Biscayne, FL, has 151 homes for sale. Median price is $2,490,000. Typical range: $749,000 to $12,485,000. Inventory includes 45 single-family, 98 condo, 8 townhome. Average price per square foot is $2,424. There are 117 luxury listings ($1M+). 86 transactions closed in Key Biscayne over the past year. The median closed price was $1,527,500. Average time from listing to contract was 100 days. Closed prices averaged 94.5% of the asking price. Roughly 12.7% of inventory sells each month. Feature by feature, the Key Biscayne market breaks down like this. 80 of the homes for sale in Key Biscayne sit on waterfront lots. 53 listings include a private pool. 126 come with garage parking. 1 sit inside gated communities. 60 are located in 55+ communities. 112 carry a homeowners association. On the rental side, Key Biscayne has 193 homes for rent, with a median asking rent of $9,000 per month. Eight in ten of those fall between $3,510 and $22,900. That is about $7.19 per square foot. Towers OF Key Biscayne CO, Biscayne Key Estates and Island House Apt Inc - CO are among the most active communities here. Figures reflect MLS data as of 2026-10-19. Key Biscayne is in Miami-dade County.