1 E Sister Rck Island
Marathon, FL 33050
MLS # A12069701· Active IDX
$16,000,000
- Bedrooms
- 4
- Bathrooms
- 3
- Living area
- 2,304 sq ft
- Lot size
- 6.44 acres
- Year built
- 2015
- Type
- Single Family Residence
- Days on market
- 63
About this home
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.
Details
| MLS # | A12069701 |
|---|---|
| Status | Active |
| Subdivision | Off Shore Island |
| County | Monroe |
| ZIP | 33050 |
| View | Direct Ocean, Ocean |
| Waterfront | Yes |
| Private pool | Yes |
| Garage spaces | 0 |
| Construction | Block |
| Roof | Metal |
| Flooring | Other, Tile |
| Heating | Solar |
| Cooling | Central Air |
| Appliances | Dryer, Dishwasher, Electric Range, Microwave, Oven, Other, Refrigerator, Solar Hot Water, Trash Compactor, Washer |
| Interior features | Built-in Features, Bedroom Layout - Three Way Split, Closet Cabinetry |
| Exterior features | Lighting |
| Water | Other |
| Sewer | Septic Tank |
| Annual taxes | $25,482 |
Listing courtesy of Compass Florida, LLC, Vladimir Rochebrun. Last updated Sep 15, 2026, 5:19 PM ET.
Request a showing
Mention MLS # A12069701 (1 E Sister Rck Island) and when you would like to visit. A licensed real-estate professional will contact you.
Licensed brokerage
Premier Real Estate Group Inc
Broker of record Maxim Bohadana, Florida broker license BK3314523
(954) 703-4504The data relating to real estate for sale on this website comes in part from the IDX Program of BeachesMLS, Inc. Information is deemed reliable but not guaranteed. Listings held by brokerages other than Premier Real Estate Group Inc are marked with the IDX logo and detailed information about them includes the name of the listing broker. Last updated Sep 15, 2026, 5:19 PM ET.