1 E Sister Rock Island Marathon, FL 33050
Listing Courtesy of: FLORIDA KEYS / Listed By: Compass Florida, LLC

  1 E Sister Rock Island Marathon, FL 33050

Active (1 Days)
$16,000,000 (USD)
4
BED
3
BATH
2,304
SQFT

Description

Own an entire private island in the heart of the Florida Keys. Located just mile offshore from Marathon, East Sister Rock Island offers extraordinary privacy surrounded by turquoise waters, yet remains only minutes from the mainland.The property encompasses approximately 6.5 acres, including approximately 5.8 acres of surrounding seabed that create an exceptional marine setting for snorkeling, swimming, kayaking, paddle boarding, fishing and exploring the crystal-clear waters of the Keys.At the center of the island is a beautifully updated 3-bedroom, 2-bath main residence with a detached guest house, offering over 5,000 total SF of living and entertaining space. Recent interior renovations include a beautifully updated kitchen with gorgeous countertops and modern finishes. A 12-foot-wide wraparound veranda captures panoramic water views, Atlantic sunrises and spectacular Florida Keys sunsets.Designed for the ultimate island lifestyle, the property features a waterfront pool and spa, tropical landscaping, multiple outdoor lounging and dining areas, and a 100-foot deep-water dock with ample dockage. World-class fishing, diving, snorkeling, boating and water-sports begin just outside your door.East Sister Rock is equipped for self-sufficient island living with solar and wind power, battery storage, backup generator, desalination system and substantial freshwater cistern capacity. A private helipad provides an additional point of access.Few properties offer this combination of privacy, accessibility, marine surroundings and established island infrastructure. Seller is also open to exploring select Joint Venture opportunities. Note the sale includes 99 E Ocean Drive on the mainland which has a private dock space.

MLS #:
620952
Taxes
$25,482(2025)
Lot Size
0.62 acres
Type
Single-Family Home
Year Built
1980
Style
Off Shore Island
Views
Yes
County
Monroe County

Listed By

Vladimir Rochebrun, Compass Florida, LLC
Source
FLORIDA KEYS
Last checked Aug 12 2026 at 4:55 PM GMT+0000
Bathroom Details
  • Full Bathrooms: 3
Interior Features
  • Appliances : Dishwasher
  • Appliances : Dryer
  • Appliances : Microwave
  • Appliances : Oven
  • Appliances : Range
  • Appliances : Refrigerator
  • Appliances : Washer
  • Appliances :
  • Room(s) : Guest/Servants Quarters : Unknown
  • Interior Features : Granite Counter Top
  • Windows/Doors : Windows/Doors : Impact Rstnce Window
  • Windows/Doors : Shutters : Accordion
  • Interior Features : Built-In Cabinets
  • Interior Features : Bar
  • Appliances : Stainless Steel Appliance(s)
  • Interior Features : Walk-In Closet(s)
  • Security Features : Other
Subdivision
  • Misc Sombrero Area (50.0)
Lot Information
  • 5 Less Than 10 Acres
Heating and Cooling
  • Central Air
Pool Information
  • Decked
  • Heated : No
  • In Ground
Exterior Features
  • Roof: Metal Roof
Utility Information
  • Utilities: Septic Tank, Satellite Dish, Solar Power, Whole House Generatr
Parking
  • Total Parking Spaces : 0
Stories
  • 1
Living Area
  • 2,304 sqft
Location
   
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Disclaimer: Copyright 2026 Florida Keys MLS. All rights reserved. This information is deemed reliable, but not guaranteed. The information being provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated 8/12/26 09:55