1 E Sister Rck Island, Marathon, FL 33050
For Sale $16,000,000
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Contact the Listing Agent directly:
Listing Agent: Vladimir Rochebrun
Agent Phone:
305-690-5851
Agent Email:
vladimir@thechadcarrollgroup.com
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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.
Built-in Features
Bedroom Layout - Three Way Split
Closet Cabinetry
Boating
Taxes: $25,482.00
Tax Year: 2025
Lighting
Porch - Open
Porch - Wrap Around
Deck
Porch
Dryer
Dishwasher
Electric Range
Microwave
Oven
Other
Refrigerator
Solar Hot Water
Trash Compactor
Washer
Direct Ocean
Ocean
No Fixed Bridge
Ocean Access
Navigable Water
Ocean Front
MLS Area: 2980
Total Square Footage: 5,760
Price per Square Feet: $6,944.44
Total Rooms: 1
Total Floors: 1
Water: Other
Construction: Block
Date Listed: 2026-08-12 00:00:00
Pool: Y
Pool Description: In Ground
Flooring: Other, Tile
Roof: Metal
Heating: Solar
Cooling: Central Air
Fireplace: Y
Restrictions: No Restrictions
Sewer: Septic Tank
Lot Desc.: Fruit Tree(S)
Parcel ID: 00105590000000
Amenities: Boating
Listing Courtesy Of: Compass Florida, Llc
vladimir@thechadcarrollgroup.com
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
Price: $16,000,000
Sq Ft: 2,304
($6,944 per
sqft)
Bedrooms: 4
Bathrooms: 3
City: Marathon
County: Monroe
Type: Single Family
Development: Off Shore Island
Acres: 6.4400
Virtual Tour/Floorplan: View
Year Built: 2015
Listing Number: A12069701
Status Code: A-Active
Taxes: $25,482.00
Tax Year: 2025
Garage:
Interior Features:
Built-in Features
Bedroom Layout - Three Way Split
Closet Cabinetry
Amenities:
Boating
Financial Information:
Taxes: $25,482.00
Tax Year: 2025
Exterior Features:
Lighting
Porch - Open
Porch - Wrap Around
Deck
Porch
Equipment:
Dryer
Dishwasher
Electric Range
Microwave
Oven
Other
Refrigerator
Solar Hot Water
Trash Compactor
Washer
View:
Direct Ocean
Ocean
Waterfront Description:
No Fixed Bridge
Ocean Access
Navigable Water
Ocean Front
Additional Information:
MLS Area: 2980
Total Square Footage: 5,760
Price per Square Feet: $6,944.44
Total Rooms: 1
Total Floors: 1
Water: Other
Construction: Block
Date Listed: 2026-08-12 00:00:00
Pool: Y
Pool Description: In Ground
Flooring: Other, Tile
Roof: Metal
Heating: Solar
Cooling: Central Air
Fireplace: Y
Restrictions: No Restrictions
Sewer: Septic Tank
Lot Desc.: Fruit Tree(S)
Parcel ID: 00105590000000
Amenities: Boating
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Map of 1 E Sister Rck Island, Marathon, FL 33050
Listing Courtesy Of: Compass Florida, Llc
vladimir@thechadcarrollgroup.com