In August 2026, the median home sale price in Key Biscayne, FL was $1,690,000, 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 228 homes sold in this period, up from 217 last year — a sign of an active market.
The median list price of condos/co-ops in Key Biscayne, FL, was $1,590,000 in August 2026, compared to $1,295,000 in August 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 August 2026, compared to $0 in August 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 August 2026, compared to $724,500 in August 2025.
Key Biscayne, FL Housing Market Analysis
There are currently 142 homes listed for sale in Key Biscayne, FL, an increase of 63.22% compared to 2025. With inventory tight relative to sales volume, sellers are in a strong position. The median asking price is $6,308,570 (up 79.39% year-over-year), and the average price per square foot is $1,150 compared to $1,032 in 2025. Properties spend an average of 126 days on the market before going under contract.
