Own an entire private island in the Florida Keys, just ¼ mile offshore from Marathon! East Sister Rock Island offers extraordinary privacy surrounded by turquoise waters, yet is only minutes from the mainland. The property encompasses approx. 6.5 acres, including approx. 5.8 acres of surrounding seabed, creating an exceptional marine setting for snorkeling, swimming, kayaking, paddleboarding, fishing and watersports. The beautifully updated 3-bedroom, 2-bath main residence and detached guest house offer over 5,000 total SF of living and entertaining space. Recent renovations include an updated kitchen with gorgeous countertops and modern finishes. A 12-ft-wide wraparound veranda captures panoramic water views, sunrises and spectacular Keys sunsets. Amenities include a waterfront pool and spa, tropical landscaping, outdoor entertaining areas, and a 100-ft deep-water dock. Self-sufficient infrastructure includes solar and wind power, battery storage, backup generator, desalination system and freshwater cistern capacity. Private helipad provides additional access. Seller is open to select Joint Venture opportunities.
Property Details
- Interior
- First Floor Entry, Built-in Features, Closet Cabinetry, 3 Bedroom Split, Family Room
- Cooling
- 1
- Heating
- Solar
- Cooling Features
- Central Air
- Bedrooms
- 4
- Bathrooms
- 3.0
- Full Baths
- 3
- View
- Ocean,Direct Ocean
- Lot Features
- 5 To Less Than 10 Acre Lot
- Lot Description
- 5 To Less Than 10 Acre Lot
- Pool Description
- In Ground
- Pool Features
- In Ground
- Exterior Features
- Lighting, Fruit Trees
- Exterior Materials
- Lighting, Fruit Trees
- Acres
- 6.442
- Square Feet
- 2304
- Lot Size (sqft)
- 280628.0
- Property Type
- Purchase
- Style
- Detached, One Story
- Year Built
- 2015
- Roof
- Metal Roof
- Sewer Information
- Septic Tank
- Utility Source
- Other
- Appliances
- Dishwasher, Dryer, Electric Range, Microwave, Other Equipment/Appliances, Refrigerator, Solar Hot Water, Trash Compactor, Wall O
- Subdivision
- Off Shore Island
- Community Features
- Boating
- County
- Monroe County
- Region
- Marathon
- Zoning
- 0S
- Original List Price
- $16,000,000
- Taxes Annual
- $25,482
Location
Legal
MIAMI ASSOCIATION OF REALTORS® All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of the Multiple Listing Service. Real estate listings held by brokerage firms other than Marjo Realty Co. may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS.
Last Updated: Sep 13, 2026 8:50 PM. Source: MAOR
Provided By
Listed by Vladimir Rochebrun (#3406310), Email: vladimir.rochebrun@compass.com
Listing Office: Compass Florida, LLC (#COMP01)
