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1 E Sister Rck Island, Marathon, FL - photo 1
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1 E Sister Rck Island, Marathon, FL - photo 2
1 E Sister Rck Island, Marathon, FL - photo 3
1 E Sister Rck Island, Marathon, FL - photo 4
1 E Sister Rck Island, Marathon, FL - photo 5
+20

$16,000,000

4 beds3 baths2,304 sqft|A12069701 MLS#

1 E Sister Rck Island, Marathon, FL 33050

Est.$96,000/moGet pre-qualified

Single Family Residence

Residential

Built in

2015

Lot size

280,526 sqft

Price/sqft

$6944

HOA

None

Listed by: Vladimir Rochebrun 305-905-2559, Compass Florida, LLC 305-851-2820

Source:Beaches MLS (RAPB)|MLS #A12069701

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Preferred Brokerage Partner

Kinsfolk Realty

Kinsfolk Signature Realty

What's special

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: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

Contact agent

Price history

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

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