House in Marathon, Florida, United States 1 - 18641845
House in Marathon, Florida, United States 2 - 18641845 House in Marathon, Florida, United States 3 - 18641845
House in Marathon, Florida, United States 4 - 18641845 House in Marathon, Florida, United States 5 - 18641845
$16,000,000

Single Family Residence In Marathon

  • 4 Beds
  • 3 Baths
  • 2,304 Sqft
  • 27,158 Sqft lot
  • Updated: Today
  • Source:
    Marathon and Lower Keys Association of REALTORS  MLS#620952

About the Property

Own an entire private island in the heart of the Florida Keys. Located just 1/4 mile offshore from Marathon, East Sister Rock Island offers extraordinary privacy surrounded by turquoise waters, yet remains only minutes from the mainland. The property encompasses approximately 6.5 acres, including approximately 5.8 acres of surrounding seabed that create an exceptional marine setting for snorkeling
Own an entire private island in the heart of the Florida Keys. Located just 1/4 mile offshore from Marathon, East Sister Rock Island offers extraordinary privacy surrounded by turquoise waters, yet remains only minutes from the mainland. The property encompasses approximately 6.5 acres, including approximately 5.8 acres of surrounding seabed that create an exceptional marine setting for snorkeling, swimming, kayaking, paddle boarding, fishing and exploring the crystal-clear waters of the Keys. At the center of the island is a beautifully updated 3-bedroom, 2-bath main residence with a detached guest house, offering over 5,000 total SF of living and entertaining space. Recent interior renovations include a beautifully updated kitchen with gorgeous countertops and modern finishes. A 12-foot-wide wraparound veranda captures panoramic water views, Atlantic sunrises and spectacular Florida Keys sunsets. Designed for the ultimate island lifestyle, the property features a waterfront pool and spa, tropical landscaping, multiple outdoor lounging and dining areas, and a 100-foot deep-water dock with ample dockage. World-class fishing, diving, snorkeling, boating and water-sports begin just outside your door. East Sister Rock is equipped for self-sufficient island living with solar and wind power, battery storage, backup generator, desalination system and substantial freshwater cistern capacity. A private helipad provides an additional point of access. Few properties offer this combination of privacy, accessibility, marine surroundings and established island infrastructure. Seller is also open to exploring select Joint Venture opportunities. Note the sale includes 99 E Ocean Drive on the mainland which has a private dock space.
…

  • Property type

    House

  • Year built

    1980

  • Price/sqft

    $6,944

Features

  • Waterfront
  • Pool
  • Water View
  • Walk In Closet
  • Helipad
  • Modern
  • Fire Pit
  • Ocean View
  • Oceanfront
Features

Lot

  • Panoramic / Scenic View
  • Water View
  • Ocean View
  • Waterfront
  • Privacy
  • Oceanfront
  • Renovated
  • Modern

Indoor

  • High Ceiling
  • Air Conditioning
  • Gas Stovetop
  • Bar
  • Stone Countertops
  • Walk In Closet

Outdoor

  • Helipad
  • Fire Pit
  • Pool
  • Outdoor Living Space

Explore the Area

1 E Sister Rock Island, Marathon, Florida, United States View on Google Maps
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Compass Florida, LLC - Miami Beach

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Compass Florida, LLC - Miami Beach
Florida, United States
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1
Listings
2026
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Compass Florida, LLC - Miami Beach
Miami Beach, Florida, United States
View agency profile
Last updated
Today
First listed
Aug 12
Listing reference
620952
Listing status

The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of the Marathon and Lower Keys Association of REALTORS®, Inc. MLS. Real Estate listings held by brokerage firms other than {{BROKERAGE_NAME}} are marked with the MLS logo and detailed information about them includes the name of the listing broker's office. IDX information is provided exclusively for consumers' personal, non-commercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, and that data is deemed reliable but is not guaranteed accurate by the MLS.

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