USAFLMarathonOff Shore Island1 E Sister Rck Island
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$16,000,000

For Sale

5 days ago

1 E Is, Marathon, FL

House

MLS® A12069701

4 Bed

3 Bath

2304 sqft

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  • Key Facts
  • Description
  • Map

Key Facts

Type Single Family Residence
Levels Residential
Size 2304 sqft
Garage 
Taxes $25,482
Days Active 5
Lot Size 6.44 Acres
Approx. Age 2015
Avg. Price Per Sqft $6,944
MLS® Number A12069701

Property Address: 1 E Sister Rck Island, Marathon, FL, 33050

Average square foot calculated using Size range provided by listing agent.

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.
MLS® NumberA12069701
Laundry Level
Central VacNo
FireplaceNo
Acreage
Exterior
Garage
Approx. Age2015
Basement
Driveway
Garage Spaces
HeatSolar
A/CCentral Air

Extras

Price History

-End Date
Not Sold YetSold Price

For Sale

Aug 12, 2026List Date
$16,000,000List Price
  • Commute

Commute

Starting Address
Destination Address
1 E Is, Marathon, FL

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