Key Biscayne Waterfront Single-Family Homes for Sale
Find the Key Biscayne waterfront home that fits your life, with the water access, the insurance and the offer worked through before you commit.
Live BeachesMLS listings matching this search in Key Biscayne, Florida, updated throughout the day.
Most waterfront listings on Key Biscayne are beach condominiums, so detached houses on the water are a small share of the market, and this page shows only them. They sit in two places: the canal lots of the Cape Florida sections at the south end of the village, on streets such as Cape Florida Drive and Mariner Drive, and the waterfront homes of Mashta Island in Biscayne Bay. Boats from both run out around Cape Florida, where the depth over the nearby flats, more than any bridge, sets the boat a dock can serve. Older houses here often sell for the lot. Before an offer, read the survey and elevation certificate, get a flood quote, and have the seawall, dock and lift checked against their permits.
10 listings, newest first.
The 10 listings on this page run from $12,485,000 to $237,000,000, with a median of $19,150,000, about $3,130 per square foot, and they have been listed a median of 122 days.
The communities with the most listings here are Cape Florida Sub (5) and Mashta Island (2), 7 of the 10; the others are spread across 3 more communities. All of them are single-family homes. Bedrooms run from 4 to 8, a median of 5; they were built between 1958 and 2022, a median of 1987, and 3 in the last ten years. 10 of the 10 have a pool, and 10 are on the water.
$16,500,000
131 Cape Florida Drive, Key Biscayne FL 33149
6 bd · 7 ba · 7,103 sq ft · Single Family Residence$27,900,000
241 Cape Florida Drive, Key Biscayne FL 33149
8 bd · 9 ba · 9,159 sq ft · Single Family Residence$19,900,000
520 S Mashta Drive, Key Biscayne FL 33149
5 bd · 4 ba · 3,085 sq ft · Single Family Residence$14,490,000
161 Cape Florida Drive, Key Biscayne FL 33149
4 bd · 6 ba · 6,661 sq ft · Single Family Residence
$18,500,000
631 N Mashta Drive, Key Biscayne FL 33149
4 bd · 5 ba · 2,255 sq ft · Single Family Residence$237,000,000
485 W Matheson Drive, Key Biscayne FL 33149
5 bd · 9 ba · 11,528 sq ft · Single Family Residence$19,950,000
120 Knollwood Drive, Key Biscayne FL 33149
6 bd · 7 ba · 6,208 sq ft · Single Family Residence$16,800,000
640 S Mashta Drive, Key Biscayne FL 33149
4 bd · 4 ba · 3,620 sq ft · Single Family Residence$19,800,000
100 Cape Florida Drive, Key Biscayne FL 33149
4 bd · 9 ba · 8,240 sq ft · Single Family Residence$12,485,000
420 Island Drive, Key Biscayne FL 33149
6 bd · 8 ba · 6,405 sq ft · Single Family Residence
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