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Luxury Homes in Key Biscayne, FL

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19 of 213 Listings

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19 of 213 Listings

Price Reduced18

Luxury Homes in Key Biscayne, FL — Page 8

213 listings

Luxury Homes in Key Biscayne, FL

Hide Map

19 of 213 Listings

Map

Luxury Homes in Key Biscayne, FL

19 of 213 Listings

Your Key Biscayne agent

Jonathan Alfonso

Portal Real Estate

Lic. #3306632

Call Jonathan

Price Reduced18

Your Key Biscayne agent

Jonathan Alfonso

Portal Real Estate

Lic. #3306632

Call Jonathan

Active

$2,280,000

3 bd · 3 ba · 2,330 sqft

151 Crandon Blvd 345, Key Biscayne, FL

Cristina Preti · BHHS EWM Realty

38Active

$16,800,000

4 bd · 4 ba · 3,620 sqft

640 S Mashta Dr, Key Biscayne, FL

Brigitte De Langeron · DLS International Realty

Price Reduced18Active

$2,280,000

3 bd · 3 ba · 2,330 sqft

151 Crandon Blvd Unit 345, Key Biscayne, FL

Cristina Preti · BHHS EWM Realty

Your Key Biscayne agent

Jonathan Alfonso

Portal Real Estate

Lic. #3306632

Call Jonathan

Price Reduced10Active

$1,250,000

2 bd · 2 ba · 1,488 sqft

151 Crandon Blvd Unit 320, Key Biscayne, FL

Rita Benavides-Munoz · Fortune Christie's International Real Estate

Price Reduced10Active

$1,250,000

2 bd · 2 ba · 1,488 sqft

151 Crandon Blvd 320, Key Biscayne, FL

Rita Benavides-Munoz · Fortune Christie's International Real Estate

Price Reduced64Active

$4,899,000

5 bd · 6 ba · 4,220 sqft

24 Grand Bay Estates Circle, Key Biscayne, FL

Anthony D Vlahovic · Engel & Voelkers Vero Beach

28Active

$6,900,000

2 bd · 4 ba · 3,950 sqft

430 Grand Bay Dr 801, Key Biscayne, FL

Adriana Vollmer · Coldwell Banker Realty

28Active

$6,900,000

2 bd · 4 ba · 3,950 sqft

430 Grand Bay Dr Unit 801, Key Biscayne, FL

Adriana Vollmer · Coldwell Banker Realty

Price Reduced31Active

$1,299,000

2 bd · 2 ba · 1,260 sqft

199 Ocean Lane Dr Unit 1009, Key Biscayne, FL

Monica Steinmuller · Coldwell Banker Realty

Price Reduced31Active

$1,299,000

2 bd · 2 ba · 1,260 sqft

199 Ocean Lane Dr 1009, Key Biscayne, FL

Monica Steinmuller · Coldwell Banker Realty

Price Reduced36Active

$7,390,000

6 bd · 7 ba · 4,043 sqft

741 Harbor Dr, Key Biscayne, FL

Nathan Zeder · Coldwell Banker Realty

38Active

$4,500,000

4 bd · 4 ba · 2,825 sqft

199 Ocean Lane Dr 401, Key Biscayne, FL

Florencia Yagodnik · Swann Realty Partners, LLC.

38Active

$4,500,000

4 bd · 4 ba · 2,825 sqft

199 Ocean Lane Dr Unit 401, Key Biscayne, FL

Florencia Yagodnik · Swann Realty Partners, LLC.

Price Reduced77Active

$3,750,000

3 bd · 4 ba · 2,510 sqft

799 Crandon Blvd 605, Key Biscayne, FL

Ana Victoria Brisky · Urdapilleta Real Estate, LLC

52Active

$18,900,000

5 bd · 6 ba · 8,435 sqft

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

Brigitte Nachtigall · One Sotheby's International Realty

Price Reduced28Active

$3,500,000

2 bd · 3 ba · 1,830 sqft

350 Ocean Dr Unit 205N, Key Biscayne, FL

Judith Zeder · Coldwell Banker Realty

Price Reduced28Active

$3,500,000

2 bd · 3 ba · 1,830 sqft

350 Ocean Dr 205N, Key Biscayne, FL

Judith Zeder · Coldwell Banker Realty

68Active

$19,800,000

4 bd · 9 ba · 8,240 sqft

100 Cape Florida Dr, Key Biscayne, FL

Lucia Marin · One Sotheby's International Realty

32Active

$3,600,000

3 bd · 3 ba · 3,120 sqft

881 Ocean Dr 20a, Key Biscayne, FL

MariaAmancia Vial-Ducaud · BHHS EWM Realty

1…7 8 9

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: 2026-11-03 21:34:02 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

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L. Custen Realty, Inc. d/b/a Realty.com/L. Custen Realty CT, LLC d/b/a Realty.com (Tom O’Leary-Broker)(CT properties only), 8323 Southwest Freeway, Suite 900, Houston, Texas 77074

The information provided by this website is for the personal, non-commercial use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Listing data is derived from various Multiple Listing Services; each source MLS and its required disclaimer are shown with the listings on the applicable page. Realty.com is an independently owned and operated brokerage.

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: 2026-11-03 21:34:02 UTC

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

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.