$19,900,000
Active
7d
$19,900,000
520 Mashta
Key Biscayne, FL 33149
5 bd4 ba3,085 sqft
Mashta Island A Replat Of
Key Biscayne, FL
Single-Family Homes in Key Biscayne
Detached single-family homes in Key Biscayne, Florida. Browse active MLS listings and communities with List & Sell FL.
0
Communities
Key Biscayne
City
1%
Listing Fee
Active Listings
138 active listings
$29,900,000
Active
$29,900,000
241 Cape Florida
Key Biscayne, FL 33149
8 bd8.5 ba9,159 sqft
Cape Florida Sub Sec 3
$14,990,000
Active
$14,990,000
161 Cape Florida
Key Biscayne, FL 33149
4 bd4.5 ba6,661 sqft
Cape Florida Sub Sec 3
$18,500,000
Active
23d
$18,500,000
631 Mashta
Key Biscayne, FL 33149
4 bd4.5 ba2,255 sqft
Mashta Island
$8,250,000
Active
26d
$8,250,000
165 Hampton
Key Biscayne, FL 33149
6 bd8.5 ba3,842 sqft
Tropical Isle Homes Sub 4
$5,199,000
Active
66d
$5,199,000
650 Curtiswood
Key Biscayne, FL 33149
6 bd4.5 ba3,356 sqft
Biscayne Key Estates
$5,200,000
Active
29d
$5,200,000
797 Glenridge
Key Biscayne, FL 33149
5 bd4.5 ba3,535 sqft
Biscayne Key Estates
$7,450,000
Active
14d
$7,450,000
425 Harbor
Key Biscayne, FL 33149
7 bd7.5 ba4,565 sqft
Tropical Isle Homes Sub 3
$9,200,000
Active
79d
$9,200,000
625 Curtiswood
Key Biscayne, FL 33149
5 bd5.5 ba4,416 sqft
Biscayne Key Estates
$7,490,000
Active
68d
$7,490,000
571 Glenridge
Key Biscayne, FL 33149
5 bd5.5 ba3,768 sqft
Tropical Isle Homes Sub
$8,500,000
Active
10d
$8,500,000
238 Buttonwood
Key Biscayne, FL 33149
6 bd6.5 ba4,190 sqft
Tropical Isle Homes Sub 4
$3,550,000
Active
35d
$3,550,000
255 Ridgewood
Key Biscayne, FL 33149
4 bd3 ba2,177 sqft
Tropical Isle Homes Sub 4
$237,000,000
Active
43d
$237,000,000
485 Matheson
Key Biscayne, FL 33149
5 bd7.5 ba11,528 sqft
Tropical Isle Homes Resub
$19,950,000
Active
92d
$19,950,000
120 Knollwood
Key Biscayne, FL 33149
6 bd6.5 ba6,208 sqft
Cape Fla Sub Sec 2
$5,478,000
Active
39d
$5,478,000
690 Warren
Key Biscayne, FL 33149
4 bd3.5 ba3,549 sqft
Biscayne Key Estates
$6,395,000
Active
52d
$6,395,000
760 Woodcrest
Key Biscayne, FL 33149
5 bd5.5 ba4,003 sqft
Biscayne Key Estates
$6,950,000
Active
84d
$6,950,000
685 Harbor
Key Biscayne, FL 33149
5 bd5.5 ba5,421 sqft
Biscayne Key Estates
$3,730,000
Active
129d
$3,730,000
524 Warren
Key Biscayne, FL 33149
5 bd4 ba2,700 sqft
Tropical Isle Homes Sub 1
$16,800,000
Active
59d
$16,800,000
640 Mashta
Key Biscayne, FL 33149
4 bd4 ba3,620 sqft
Mashta Island
Information is provided exclusively for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data deemed reliable but not guaranteed. © 2026 Beaches MLS, Inc.
About Single-Family Homes in Key Biscayne
Single-Family Homes in Key Biscayne, FL
Looking for single-family homes in Key Biscayne? Here is what to know about this part of the County market. Single-family homes in Key Biscayne give buyers a detached house with a yard and more privacy than attached options, across a wide range of neighborhoods in County. They suit families and anyone who wants space, a garage, and room to add a pool.
Decide early whether you want an HOA community or a no-HOA neighborhood, since that shapes both cost and rules. In Florida, pay attention to the roof age and the condition of major systems, because they drive insurance cost and insurability. Lot size, school zoning, and flood zone are the other factors that most affect both livability and resale.
Frequently Asked Questions
Single-Family Homes in Key Biscayne FAQ
Do single-family homes in Key Biscayne have HOA fees?+
Some do and some do not. Newer and gated neighborhoods usually have an HOA, while many established areas do not. We can filter for either based on your preference.
What should I check on a Florida single-family home?+
Roof age, the condition of major systems, and the flood zone matter most, since they affect insurance cost and insurability. A home inspection and insurance quotes early in the process avoid surprises.
Is it better to buy new or resale in Key Biscayne?+
New homes bring modern layouts and warranties, while resale often means mature landscaping, established neighborhoods, and negotiating room. We can compare both for your budget.
How much do single-family homes in County cost?+
Prices span a wide range by neighborhood, size, and age. We can pull current listings and recent sales for the specific Key Biscayne areas you are considering.