4 Bedroom Homes in Key Biscayne, FL

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18 of 35 Listings

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18 of 35 Listings

Active
$12,990,000
4 bd · 6 ba · 7,400 sqft
445 Grand Bay Drive Ph-2a, Key Biscayne, FL
Brigitte Nachtigall · One Sotheby's International Realty

35 listings

4 Bedroom Homes in Key Biscayne, FL

Hide Map

18 of 35 Listings

Map

4 Bedroom Homes in Key Biscayne, FL

18 of 35 Listings

Your Key Biscayne agent

Jonathan Alfonso

Portal Real Estate

Lic. #3306632

Call Jonathan

Active
$12,990,000
4 bd · 6 ba · 7,400 sqft
445 Grand Bay Drive Ph-2a, Key Biscayne, FL
Brigitte Nachtigall · One Sotheby's International Realty

Your Key Biscayne agent

Jonathan Alfonso

Portal Real Estate

Lic. #3306632

Call Jonathan

54Active

$12,990,000

4 bd · 6 ba · 7,400 sqft

445 Grand Bay Drive Unit Ph-2a, Key Biscayne, FL

Brigitte Nachtigall · One Sotheby's International Realty

86Active

$5,490,000

4 bd · 6 ba · 3,581 sqft

799 Crandon Blvd 202, Key Biscayne, FL

Victor Florencio Sanchez · Ocean Club Realty, Inc.

Your Key Biscayne agent

Jonathan Alfonso

Portal Real Estate

Lic. #3306632

Call Jonathan

35Active

$3,900,000

4 bd · 4 ba · 2,930 sqft

430 Grand Bay Dr Unit 606, Key Biscayne, FL

Saddy Delgado PA · One Sotheby's International Realty

36Active

$3,950,000

4 bd · 5 ba · 3,250 sqft

445 Grand Bay Dr Unit 104, Key Biscayne, FL

Cristina Diez · Compass Florida, LLC.

35Active

$3,900,000

4 bd · 4 ba · 2,930 sqft

430 Grand Bay Dr 606, Key Biscayne, FL

Saddy Delgado PA · One Sotheby's International Realty

36Active

$3,950,000

4 bd · 5 ba · 3,250 sqft

445 Grand Bay Dr 104, Key Biscayne, FL

Cristina Diez · Compass Florida, LLC.

50Active

$3,300,000

4 bd · 3 ba · 2,448 sqft

548 Fernwood Rd 548, Key Biscayne, FL

Alejandra Gil · Florida Realty of Miami Corp

73Active

$4,500,000

4 bd · 3 ba · 2,689 sqft

475 Woodcrest Rd, Key Biscayne, FL

Alejandra Gil · Florida Realty of Miami Corp

34Active

$6,350,000

4 bd · 3 ba · 2,761 sqft

571 S Mashta Dr, Key Biscayne, FL

Adolfo Yanes Luciani · HR 19 Realty LLC

Price Reduced42Active

$14,490,000

4 bd · 6 ba · 6,661 sqft

161 Cape Florida Drive, Key Biscayne, FL

Brigitte Nachtigall · One Sotheby's International Realty

49Active

$18,500,000

4 bd · 5 ba · 2,255 sqft

631 N Mashta Drive, Key Biscayne, FL

Javier Gustavo Quiroz · Coldwell Banker

Price Reduced50Active

$3,499,999

4 bd · 4 ba · 1,880 sqft

200 Ocean Lane Dr 501, Key Biscayne, FL

Alejandro Deane · Luxuri International Real Estate Miami, LLC.

Price Reduced50Active

$3,499,999

4 bd · 4 ba · 1,880 sqft

200 Ocean Lane Dr Unit 501, Key Biscayne, FL

Alejandro Deane · Luxuri International Real Estate Miami, LLC.

Price Reduced37Active

$5,950,000

4 bd · 5 ba · 4,200 sqft

785 Crandon Blvd 205/305, Key Biscayne, FL

Kaila Mardoyan · Douglas Elliman

Price Reduced73Active

$2,600,000

4 bd · 4 ba · 2,442 sqft

209 E Enid Dr Unit 36, Key Biscayne, FL

Susana Medrano Roth · BHHS EWM Realty

Price Reduced73Active

$2,600,000

4 bd · 4 ba · 2,442 sqft

209 E Enid Dr 36, Key Biscayne, FL

Susana Medrano Roth · BHHS EWM Realty

Price Reduced39Active

$5,378,000

4 bd · 4 ba · 3,549 sqft

690 Warren Ln, Key Biscayne, FL

Brigitte Nachtigall · One Sotheby's International Realty

Listing data & MLS disclosures

MiamiSouthFlorida: Listing information provided by MiamiSouthFlorida.
MIAMI REALTORS MLS: The multiple listing information is provided by MIAMI Association of Realtors® from a copyrighted compilation of listings. The compilation of listings and each individual listingare ©2026 MIAMI Association of Realtors®. All Rights Reserved.
The information provided is for consumers’ personal, noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. All properties are subject to prior sale or withdrawal. All information provided is deemed reliable but is not guaranteed accurate, and should be independently verified. Last Updated: 2026-11-02 17:42:09 UTC

Key Biscayne housing market

October 2026 · This period is still settling

Selling at 94.1% of asking price

Buyers here are paying below asking. MLS · 10 sales · as of Oct 30, 2026

Homes on the market · MLS, as of Oct 18, 2026

Median list price: $2,625,000
Homes for sale: 134

Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Sep 30, 2026

Median home size: 1,835 sq. ft.

Key Biscayne, FL community profile

Population: 15,327
Median income: $154,457
Housing units: 7,079
People per sq. mi.: 982.5
Area: 15.6 sq. mi.

Source: HJN community data

Explore Key Biscayne homes

Your Key Biscayne agent

Jonathan Alfonso

Portal Real Estate

Lic. #3306632

Call Jonathan

Listing data & MLS disclosures

MiamiSouthFlorida: Listing information provided by MiamiSouthFlorida.
MIAMI REALTORS MLS: The multiple listing information is provided by MIAMI Association of Realtors® from a copyrighted compilation of listings. The compilation of listings and each individual listingare ©2026 MIAMI Association of Realtors®. All Rights Reserved.
The information provided is for consumers’ personal, noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. All properties are subject to prior sale or withdrawal. All information provided is deemed reliable but is not guaranteed accurate, and should be independently verified. Last Updated: 2026-11-02 17:42:09 UTC

Key Biscayne housing market

October 2026 · This period is still settling

Selling at 94.1% of asking price

Buyers here are paying below asking. MLS · 10 sales · as of Oct 30, 2026

Homes on the market · MLS, as of Oct 18, 2026

Median list price: $2,625,000
Homes for sale: 134

Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Sep 30, 2026

Median home size: 1,835 sq. ft.

Key Biscayne, FL community profile

Population: 15,327
Median income: $154,457
Housing units: 7,079
People per sq. mi.: 982.5
Area: 15.6 sq. mi.

Source: HJN community data