Key Biscayne Real Estate

Some of the best housing options in Miami-dade County are in the Key Biscayne Real Estate market, with a variety of single family homes for sale priced between $2,975,000 and as high as $237 Million three to nine bedroom homes that range in size from 1,333 to 16,148 square feet. Options for Condos in Key Biscayne range from $399,000 for an apartment with one bedroom and one bathroom to five bedrooms and six bathroom luxury condominiums that sell for up to $26 Million. Suppose a Townhome for sale in Key Biscayne is what you are looking for, a two-bedroom, two bathroom 875 square foot villa or a four-bed, six-bath home as large as 3,254 sq ft ranging in price from $785,000 to $5,100,000.

We have detailed information regarding 28 communities in Key Biscayne, including one non-gated community of single family homes, nine oceanfront buildings, fourteen condo buildings, and three waterfront communities including some new construction opportunities and open houses. Key Biscayne real estate activity on the MLS indicates 199 properties are currently on the market (as of May 23rd, 2026). Whether relocating to Key Biscayne from another state or upsizing or downsizing, whichever of the many luxury homes for sale in Key Biscayne, or elsewhere in South Florida you choose, our professional Realtors in Key Biscayne Florida can guide you through the home-buying process.

Key Biscayne Homes For Sale

$237 Million

MLS#AX-12005335

485 W Matheson Dr
Key Biscayne, FL 33149

5

9

2

16,148 SqFt

Ocean Front

2.382 Acres

19 Days

Reduced

$29.9 Million

$36,000,000

Cape Florida

241 Cape Florida Dr
Key Biscayne, FL 33149

8

9

2

9,159 SqFt

Ocean Front

0.482 Acres

704 Days

$29.5 Million

Cape Florida

260 Cape Florida Dr
Key Biscayne, FL 33149

9

10

3

16,076 SqFt

Ocean Front

0.742 Acres

242 Days

Under Contract

$26 Million

MLS#AX-11921513

5 Harbor Pt
Key Biscayne, FL 33149

3

6

10,926 SqFt

Ocean Front

0.661 Acres

126 Days

Reduced

$26 Million

$33,900,000

Grand Bay

430 Grand Bay Dr Ph-1an
Key Biscayne, FL 33149

4

6

9,600 Sq Ft

Ocean Front

186 Days

$25.9 Million

MLS#AX-11869417

200 Harbor Dr
Key Biscayne, FL 33149

4

4

2

3,942 SqFt

Water Front

0.454 Acres

641 Days

Under Contract

$21,800,000

$31,900,000

MLS#AX-11657338

230 Harbor Drive
Key Biscayne, FL 33149

7

8

4

13,489 SqFt

Ocean Access

0.459 Acres

632 Days

Reduced

$20,450,000

$21,950,000

MLS#AX-11912105

550 Harbor Dr
Key Biscayne, FL 33149

7

8

4

7,356 SqFt

Ocean Access

0.527 Acres

193 Days

Reduced

$20,300,000

$22,800,000

Cape Florida

960 Mariner Dr
Key Biscayne, FL 33149

6

10

7,742 SqFt

Ocean Access

0.353 Acres

467 Days

New Construction

$19.95 Million

Cape Florida

120 Knollwood Dr
Key Biscayne, FL 33149

6

7

2

8,541 SqFt

Ocean Access

0.386 Acres

23 Days

$19,800,000

Cape Florida

100 Cape Florida Dr
Key Biscayne, FL 33149

4

9

7

11,006 SqFt

Ocean Access

0.379 Acres

137 Days

$18.9 Million

Grand Bay

445 Grand Bay Drive Ph-1a
Key Biscayne, FL 33149

5

6

11,260 Sq Ft

Ocean Front

98 Days

199 Active Listings in Key Biscayne, FL

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Living in Key Biscayne affords you easy access to nearby golf courses, fine dining, entertainment venues and various other amenities and conveniences in the city of Key Biscayne. The I-95, SRA1A, or the Florida Turnpike provide an easy transition to nearby cities.

Boating and watersports are integral to the South Florida lifestyle, offering year-round access to the Intracoastal Waterway, the Atlantic Ocean, countless marinas, vibrant marine life, and a culture centered around outdoor leisure and recreation. Key Biscayne real estate prices are directly correlated to it's proximity to these amenities.

The data relating to homes for sale or lease or other real estate for sale or for rent on the BEX Realty website comes in part from a cooperative data exchange program of the MLS in which this Broker participates. The real estate displayed may not be all of the homes in the database, or all of the properties listed with Brokers participating in the cooperative data exchange program. Homes for sale that are listed by Brokers other than this Broker are marked with either the listing Broker's name or the MLS name or a logo provided by the MLS and the details page about such properties includes the name of the listing Brokers. Information provided is thought to be reliable but is not guaranteed to be accurate; you are advised to verify facts that are important to you. No warranties, expressed or implied, are provided for the data herein, or for their use or interpretation by the user. BEX Realty, the Florida Association of Realtors and its cooperating Multiple Listing Services do not create, control or review the property data displayed herein and take no responsibility for the content of such records. Federal law including the fair housing act prohibits discrimination on the basis of race, color, religion, sex, handicap, familial status or national origin in the sale, rental or financing of housing. All properties featuring the Miami Realtors logo are provided by the Miami Association of Realtors. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.