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Key Biscayne, FL Homes for Sale | Realty.com
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Start here

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  • Home buying tips
  • Before you start looking
  • The buying timeline

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  • Today's mortgage rates
  • Mortgage calculator
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  • Get pre-approved

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  • Writing a winning offer
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  • Closing costs, itemized
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295 listings

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3 bedsWith a pool

Homes for Sale in Key Biscayne, FL

Homes for Sale in Key Biscayne, FL

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19 of 295 Listings
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Homes for Sale in Key Biscayne, FL

19 of 295 Listings

  1. 881 Ocean Dr Unit 17B — photo5Active

    $2,500,000

    2 bd · 2 ba · 1,875 sqft

    881 Ocean Dr Unit 17B, Key Biscayne, FL

    Elizabeth Warner · Hardie Warner Real Estate, Inc.

  2. 170 Buttonwood Dr — photo70Active

    $5,550,000

    5 bd · 7 ba · 3,676 sqft

    170 Buttonwood Dr, Key Biscayne, FL

    Barbara Lamar PA · One Sotheby's International Realty

  3. 103 Reef Ln — photo40Active

    $10,700,000

    7 bd · 6 ba · 4,997 sqft

    103 Reef Ln, Key Biscayne, FL

    Mark Chatburn · One Sotheby's International Realty

  4. 881 Ocean Dr 17B — photo5Active

    $2,500,000

    2 bd · 2 ba · 1,875 sqft

    881 Ocean Dr 17B, Key Biscayne, FL

    Elizabeth Warner · Hardie Warner Real Estate, Inc.

  5. 77 Crandon Blvd Unit 8E — photo49Active

    $735,000

    2 bd · 2 ba · 1,123 sqft

    77 Crandon Blvd Unit 8E, Key Biscayne, FL

    Jordan Casanas · Fortune Christie's Intl R.E.

  6. 77 Crandon Blvd 8E — photo49Active

    $735,000

    2 bd · 2 ba · 1,123 sqft

    77 Crandon Blvd 8E, Key Biscayne, FL

    Jordan Casanas · Fortune Christie's Intl R.E.

  7. 791 Crandon Blvd 507 — photo50Active

    $7,500,000

    4 bd · 6 ba · 3,581 sqft

    791 Crandon Blvd 507, Key Biscayne, FL

    Silvia Gross · GRG Intl. Properties LLC

  8. 791 Crandon Blvd Unit 507 — photo50Active

    $7,500,000

    4 bd · 6 ba · 3,581 sqft

    791 Crandon Blvd Unit 507, Key Biscayne, FL

    Silvia Gross · GRG Intl. Properties LLC

  9. 295 Glenridge Rd — photo22Active

    $6,890,000

    6 bd · 7 ba · 4,345 sqft

    295 Glenridge Rd, Key Biscayne, FL

    Elena Chacon · BHHS EWM Realty

  10. 960 Mariner Dr — photo58Active

    $19,450,000

    6 bd · 10 ba · 7,742 sqft

    960 Mariner Dr, Key Biscayne, FL

    Francisco Neri · The Corcoran Group

  11. 251 Crandon Blvd 525 — photo41Active

    $1,495,000

    2 bd · 2 ba · 1,532 sqft

    251 Crandon Blvd 525, Key Biscayne, FL

    Melissa Llaury · One Sotheby's International Realty

  12. 251 Crandon Blvd Unit 304 — photo37Active

    $1,695,000

    2 bd · 2 ba · 1,532 sqft

    251 Crandon Blvd Unit 304, Key Biscayne, FL

    Monica Espino · Florida Realty of Miami Corp

  13. 251 Crandon Blvd Unit 525 — photo41Active

    $1,495,000

    2 bd · 2 ba · 1,532 sqft

    251 Crandon Blvd Unit 525, Key Biscayne, FL

    Melissa Llaury · One Sotheby's International Realty

  14. 251 Crandon Blvd 304 — photo45Active

    $1,695,000

    2 bd · 2 ba · 1,532 sqft

    251 Crandon Blvd 304, Key Biscayne, FL

    Monica Espino · Florida Realty of Miami Corp

  15. 1080 Mariner Dr — photo60Active

    $19,750,000

    6 bd · 7 ba · 6,468 sqft

    1080 Mariner Dr, Key Biscayne, FL

    Alina De La Vega · One Sotheby's International Realty

  16. 300 Galen Dr 401 — photo10Active

    $520,000

    2 bd · 2 ba · 965 sqft

    300 Galen Dr 401, Key Biscayne, FL

    Andrea Figueroa · Sea Grove Realty

  17. 251 Crandon Blvd Unit 806 — photo29Active

    $2,900,000

    2 bd · 3 ba · 2,220 sqft

    251 Crandon Blvd Unit 806, Key Biscayne, FL

    Julieta Suarez Lepre · Serhant

  18. 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

  19. 445 Grand Bay Drive Unit Ph-2a — photo54Active

    $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

12…13

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Your Key Biscayne agent

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Your Key Biscayne agent

JA

Jonathan Alfonso

Portal Real Estate

Lic. #3306632

Portal Real EstateCall 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: 2026-11-14 21:14:29 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

Nearby areas

ZIP codes

  • 33160 (3,389)
  • 33009 (2,243)
  • 33139 (1,915)
  • 33132 (1,815)
  • 33180 (1,754)
  • 33131 (1,713)
  • 33062 (1,387)
  • 33019 (1,338)

Cities

  • Miami (12,548)
  • Fort Lauderdale (5,024)
  • Miami Beach (3,879)
  • Hollywood (3,085)
  • Boca Raton (2,685)
  • Pompano Beach (2,350)
  • Aventura (2,258)
  • Hallandale Beach (2,238)