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1 E Sister Rck Island, Marathon, FL - photo 1

$16,000,000

1 E Sister Rck Island

Marathon, FL 33050

Estimated payment $81,480/month

no HOA · estimated tax · estimated insurance · 20% down, 6.5%, 30 yr

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4Beds
3Baths
2,304Sq Ft
$6944Price/Sq Ft

Preferred partner

Kinsfolk Realty

Kinsfolk Signature Realty

Powered by Hometrino

(813) 602-0498

Highlights

No HOA
Private Pool
Fireplace
Built in 2015
280,526 sqft Lot

About This Home

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.

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Facts & features

Bedrooms & bathrooms

  • •Bedrooms:4
  • •Bathrooms:3
  • •Full bathrooms:3
  • •Half bathrooms:0

Heating

  • •Has Heating:Yes

Interior area

  • •Total structure area:2,304 sqft
  • •Total interior livable area:2,304 sqft

Parking

  • •Parking features:N/A
  • •Garage spaces:0
  • •Has attached garage:No

Lot

  • •Size:280,526 sqft

Details

  • •Parcel number:N/A

Type & style

  • •Home type:Single Family Residence
  • •Property subtype:Residential

Materials

  • • N/A

Condition

  • •Year built:2015

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Price history

DateEventPrice
2026-08-12T00:00:00.000ZListed for sale$16,000,000$6944/sqft

Listing Agent

Vladimir Rochebrun

Compass Florida, LLC

Brokerage Phone: 305-851-2820

Source: Beaches MLS · MLS #A12069701

Data Powered by Home Junction, Inc.

Nearby

Schools

FLORIDA KEYS COMMUNITY COLLEGE - MIDDLE KEYS CENTER

1.1 mi

MARATHON SCHOOL

High · 1.1 mi

STANLEY SWITLIK ELEMENTARY SCHOOL

Elementary · 2.1 mi

Supermarkets

Publix Drive-Up

1.8 mi

Paradise Produce

1.9 mi

Winn-Dixie

1.9 mi

Dining

Wahoos Bar & Grill

0.6 mi

Godfathers Pizza

0.9 mi

Marathon Pizza & Pasta

1.4 mi

Parks

Marathon Community Park

1.8 mi

Jesse Hobbs Park

1.9 mi

Beaches

Sombrero Beach

0.6 mi

Coca Plum Beach

5.4 mi

Campground Beach

6.9 mi

Nearby amenity locations include data © OpenStreetMap contributors.