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.
For sale
$16,000,000
1 E Sister Rck Is, Marathon, FL 33050
4beds
2,304sqft
Single Family Residence
Built in 2015
6.44 Acres Lot
$-- Zestimate®
$6,944/sqft
$-- HOA
What's special
Private helipadOutdoor entertaining areasWaterfront pool and spaTropical landscaping
- 30 days
- 5,141
- 401
Zillow last checked:
Listing updated:
Listed by:
Vladimir Rochebrun 305-690-5851,
Compass Florida, LLC,
Aaron Rosenthal 954-249-3178,
Compass Florida, LLC
Source: MIAMI,MLS#: A12069701
Originating MLS: A-Miami Association of REALTORS
Originating MLS: A-Miami Association of REALTORSFacts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 3
- Full bathrooms: 3
Rooms
- Room types: Family Room
Heating
- Solar
Cooling
- Central Air
Appliances
- Included: Dishwasher, Dryer, Electric Range, Microwave, Other, Refrigerator, Solar Hot Water, Trash Compactor, Oven, Washer
Features
- Built-in Features, Closet Cabinetry, 3 Bedroom Split
- Flooring: Other, Tile
- Doors: High Impact Doors
- Windows: Complete Impact Glass, Hurricane Shutters
- Has fireplace: Yes
Interior area
- Total structure area: 5,760
- Total interior livable area: 2,304 sqft
Video & virtual tour
Property
Parking
- Parking features: None
Features
- Stories: 1
- Entry location: First Floor Entry
- Patio & porch: Deck, Open Porch, Wrap Around
- Exterior features: Lighting
- Has private pool: Yes
- Pool features: In Ground
- Has view: Yes
- View description: Ocean
- Has water view: Yes
- Water view: Ocean
- Waterfront features: Ocean Access, Navigable Water, Ocean Front, WF/Pool/Ocean Access
- Frontage length: 800
Lot
- Size: 6.44 Acres
- Features: 5 To Less Than 10 Acre Lot
- Residential vegetation: Fruit Trees
Details
- Additional structures: Guest House
- Parcel number: 00105590000000
- Zoning: 0S
- Other equipment: Other, Satellite Dish
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Materials
- Concrete Block Construction
- Roof: Metal
Condition
- Year built: 2015
Utilities & green energy
- Sewer: Septic Tank
- Water: Other
Community & HOA
Community
- Features: Boating
- Subdivision: Off Shore Island
HOA
- Has HOA: No
Location
- Region: Marathon
Financial & listing details
- Price per square foot: $6,944/sqft
- Annual tax amount: $25,482
- Date on market: 8/12/2026
- Listing terms: All Cash,Conventional
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 8/12/2026 | Listed for sale | $16,000,000$6,944/sqft |
Source:  MIAMI #A12069701 Report a problem | ||
Public tax history
Tax history is unavailable.
Monthly payment
Est. payment
