In September 2026, the median home sale price in Key Biscayne, FL was $1,692,500, with homes selling in an average of 111 days — slower than the 100-day average last year, suggesting buyers have more negotiating room. A total of 230 homes sold in this period, up from 214 last year — a sign of an active market.
The median list price of condos/co-ops in Key Biscayne, FL, was $1,594,950 in September 2026, compared to $1,349,000 in September 2025.
Key Biscayne, FL Market Trend for Lots/Land
Median List Price
The median list price of lots/land in Key Biscayne, FL, was $0 in September 2026, compared to $0 in September 2025.
Key Biscayne, FL Market Trend for Commercial
Median List Price
The median list price of commercial in Key Biscayne, FL, was $1,450,000 in September 2026, compared to $724,500 in September 2025.
Key Biscayne, FL Housing Market Analysis
There are currently 146 homes listed for sale in Key Biscayne, FL, an increase of 64.04% compared to 2025. With inventory tight relative to sales volume, sellers are in a strong position. The median asking price is $6,113,465 (up 46.11% year-over-year), and the average price per square foot is $1,152 compared to $1,057 in 2025. Properties spend an average of 129 days on the market before going under contract.
