Single Family Residence For Sale

1 E Sister Rck Island, Marathon, FL 33050

$16,000,000
4 Bedrooms
3 Bathrooms
2,304
Property Description

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.

Basic Details
Listing Type : For Sale
Price : $16,000,000
Bedrooms : 4
Bathrooms : 3
View : Ocean
Square Footage : 2,304
Full Bathrooms : 3
Property Sub Type : Single Family Residence
Field 3132 : Boating
Features
: Central Air
: Porch, Deck, Wrap Around
Septic Tank
Solar
Other, Tile
In Ground
Metal
Location
US
FL
Monroe
Marathon
33050
2980
1 E Sister Rck Island, Marathon, Florida 33050
Extended Details
Built-in Features, Bedroom on Main Level, Closet Cabinetry, Eat-in Kitchen, Living/Dining Room, Split Bedrooms, Separate Shower
Lighting, Outdoor Living Area
Virtual Tour URL
Off Shore Island
08.12.2026
Block
Yes
5-10 Acres,Fruit Trees
Dryer, Dishwasher, Electric Range, Microwave, Oven, Refrigerator, Solar Hot Water, Trash Compactor, Washer
Boating
East
0S
$0
Compass Florida, LLC
Vladimir Rochebrun
5760
SEF3574795
SEFCOMP01
1
One
Active
2026-08-12
Listed As-Is
2026-08-12T00:00:00Z
1
1
25482
Other
Aaron Lee Rosenthal
Compass Florida, LLC
Beaches
Property TypeSingle Family Residence
StatusActive
Listing IDA12069701
Year Built2015
Lot Area280,628
Mortgage Calculator
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Realtyna

Nadereh (Nana) Rezaie, P.A.  Broker Associate, Certified Luxury Home Marketing Specialist™ GUILD™

Nana Rezaie 561-660-1948

Office: 561-660-1948 1400 Corporate Center Way, Second Floor, Wellington, FL 33414 Each office independently owned and operated 561-472-1236 .

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