6+ Bedroom Homes in Key Biscayne, FL
12 for sale · 14 homes listed · Updated September 25, 2026
- 960 mariner drive, Key Biscayne 33149 $19,500,000 · 6 bd · 10 ba · 7,742 sqft
- 420 island drive, Key Biscayne 33149 $12,485,000 · 6 bd · 8 ba · 6,405 sqft
- 31 island drive, Key Biscayne 33149 $9,800,000 · 6 bd · 7 ba · 5,826 sqft
- 110 hampton lane, Key Biscayne 33149 $6,900,000 · 6 bd · 7 ba · 3,550 sqft
- 741 harbor drive, Key Biscayne 33149 $7,590,000 · 6 bd · 7 ba · 4,043 sqft
- 238 buttonwood drive, Key Biscayne 33149 $8,500,000 · 6 bd · 7 ba · 4,190 sqft
- 425 harbor drive, Key Biscayne 33149 $7,450,000 · 7 bd · 9 ba · 4,565 sqft
- 650 curtiswood drive, Key Biscayne 33149 $5,199,000 · 6 bd · 5 ba · 3,356 sqft
- 165 hampton lane, Key Biscayne 33149 $8,250,000 · 6 bd · 9 ba · 3,842 sqft
- 241 cape florida drive, Key Biscayne 33149 $27,900,000 · 8 bd · 9 ba · 9,159 sqft
- 544 warren lane, Key Biscayne 33149 $8,000,000 · 6 bd · 6 ba · 1,044 sqft
- 131 cape florida drive, Key Biscayne 33149 $16,500,000 · 6 bd · 7 ba · 7,103 sqft
- 550 harbor drive, Key Biscayne 33149 Active Under Contract $19,450,000 · 7 bd · 8 ba · 6,497 sqft
- 111 reef lane, Key Biscayne 33149 Sold on Aug 7, 2026 $11,500,000 · 7 bd · 6 ba · 5,008 sqft