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 $2,400,000 and as high as $71 Million one to nine bedroom homes that range in size from 1,703 to 16,076 square feet. Options for Condos in Key Biscayne range from $449,900 for an apartment with one bedroom and one bathroom to four bedrooms and five bathroom luxury condominiums that sell for up to $10 Million. Suppose a Townhome for sale in Key Biscayne is what you are looking for, a two-bedroom, two bathroom 1,042 square foot villa or a four-bed, five-bath home as large as 3,254 sq ft ranging in price from $1,100,000 to $5,200,000.

We have detailed information regarding 27 communities in Key Biscayne, including 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 200 properties are currently on the market (as of October 10th, 2025). 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

$71 Million

MLS#AX-11731458

280 Harbor Dr
Key Biscayne, FL 33149

1

2

3

7,695 SqFt

Water Front

0.459 Acres

245 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

479 Days

$29.5 Million

MLS#AX-11883349

260 Cape Florida Dr
Key Biscayne, FL 33149

9

10

3

16,076 SqFt

Ocean Front

0.742 Acres

17 Days

Under Contract

$26 Million

MLS#AX-11774618

5 Harbor Pt
Key Biscayne, FL 33149

3

6

10,926 SqFt

Ocean Access

0.661 Acres

152 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

416 Days

$25 Million

Mashta Island

699 N Mashta Dr
Key Biscayne, FL 33149

4

5

3,241 SqFt

Ocean Access

0.344 Acres

129 Days

Reduced

$24.5 Million

$26,000,000

Cape Florida

180 Cape Florida Dr
Key Biscayne, FL 33149

6

8

3

10,166 SqFt

Ocean Access

0.427 Acres

1129 Days

$23.9 Million

Mashta Island

481 S Mashta Drive
Key Biscayne, FL 33149

5

7

2

8,544 SqFt

Ocean Access

0.391 Acres

185 Days

Reduced

$23.5 Million

$31,900,000

MLS#AX-11657338

230 Harbor Drive
Key Biscayne, FL 33149

7

8

4

13,489 SqFt

Ocean Access

0.459 Acres

407 Days

$23.5 Million

Mashta Island

631 N Mashta Drive
Key Biscayne, FL 33149

4

5

3,720 SqFt

Pool

Intracoastal Waterway

247 Days

Reduced

$21.9 Million

$22,800,000

Cape Florida

960 Mariner Dr
Key Biscayne, FL 33149

6

10

7,192 SqFt

Ocean Access

0.353 Acres

242 Days

New Construction

Reduced

$15,790,000

$17,490,000

Cape Florida

161 Cape Florida Dr
Key Biscayne, FL 33149

4

5

2

8,079 SqFt

Water Front

0.333 Acres

816 Days

200 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 such as Miami Beach, Sunny Isles Beach, Cape Coral, North Miami, Coral Gables, Hialeah, North Bay Village, Pinecrest, and Ocala.

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.

Additionally, two local airports are easily accessible - Miami International Airport (MIA), and Fort Lauderdale Hollywood International Airport (FLL). Finally, for private air travel, you may utilize Miami Executive (TMB), Miami Opa Locka Executive (OPF), Homestead Arb (HST), and North Perry (HWO) in Hollywood.

The data relating to homes for sale or lease or other real estate for sale or for rent on the ZFC 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. ZFC, 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 listings featuring the BMLS logo are provided by Beaches Multiple Listing Service, Inc. This information is not verified for authenticity or accuracy and is not guaranteed. Copyright © 2025 Beaches MLS, Inc.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.