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Single family home for sale at 1 E Sister Rck Is, Marathon, FL 33050 | MLS# A12069701 | Listing updated on 2026-10-30
Photo 1 of Single family home for sale at 1 E Sister Rck Is, Marathon, FL 33050 | MLS# A12069701 | Listing updated on 2026-10-30
Photo 2 of Single family home for sale at 1 E Sister Rck Is, Marathon, FL 33050 | MLS# A12069701 | Listing updated on 2026-10-30
Photo 3 of Single family home for sale at 1 E Sister Rck Is, Marathon, FL 33050 | MLS# A12069701 | Listing updated on 2026-10-30
Photo 4 of Single family home for sale at 1 E Sister Rck Is, Marathon, FL 33050 | MLS# A12069701 | Listing updated on 2026-10-30
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$16,000,000

Monthly Est:$79,638

  • Beds Icon4 Beds
  • Beds Icon
    3 Baths
  • Beds Icon2,304sqft

1 E Sister Rck Is, Marathon, FL 33050

$79,638/moEst:

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  • Single Family Residence

  • Built in 2015

  • $-- HOA

  • 6.44 acres lot

  • $6,944/sq.ft

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.

  • Houzeo last checked: 5 minutes ago
  • Listing updated: October 30, 2026 at 6:27 pm
  • Listing Provided by: Vladimir Rochebrun (305) 690-5851 DRE #3406310, Aaron Lee Rosenthal (954) 249-3178 DRE #3574795 | Compass Florida, LLC (305) 851-2820
  • Source: Beaches MLS-FL | MLS#: A12069701 Beaches MLS-FL

Property Details

  • Status

    Active

  • Type

    Single Family Residence

  • No. of Stories

    1

  • County

    Monroe County

  • City

    Marathon

  • Neighborhood

    --

  • Year Built

    2015

  • HOA Fees

    -

  • Finished Area

    2,304 sqft

  • Lot Size

    6.44 acres lot

  • Basement Area

    - sqft

  • MLS Name

    Beaches MLS

  • MLS Number

    A12069701

  • MLS Status

    Active

  • Days on Market

    83

  • Cumulative Days on Market

    79

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Location

Facts & Features

Rooms

  • Bedrooms & bathrooms

    Bedrooms: 4

    Bathrooms: 3

Interior

  • Cooling

    Central Air

  • Exterior Features

    Lighting, Outdoor Living Area

  • Interior Features

    Built In Features, Bedroom On Main Level, Closet Cabinetry, Eat In Kitchen, Living Dining Room, Split Bedrooms, Separate Shower

  • Sewer

    Septic Tank

  • Heating

    Solar

  • Flooring

    Other, Tile

  • Appliances

    Dryer, Dishwasher, Electric Range, Microwave, Oven, Refrigerator, Solar Hot Water, Trash Compactor, Washer

Construction

  • Year Built

    Year Built: 2015

  • Home type

    Single Family Residence

  • Construction Materials

    Block

  • Roof

    Metal

Utilities & Energy

  • Association Amenities

    Boating

  • Water Source

    Other

  • Pool Features

    In Ground

Other Features

  • Community Features

    Boat Facilities

  • Patio And Porch Features

    Deck, Porch, Wrap Around

  • Lot Features

    Five To Ten Acres, Fruit Trees

  • Subdivision Name

    Off Shore Island

Price History

DateEventPrice

08/12/2026

Source: mls_logoBeaches MLS-FL #A12069701

Off Market

$16,000,000

$6,944/sqft

08/12/2026

Source: mls_logoBeaches MLS-FL #A12069701

Listed for Sale

$16,000,000

$6,944/sqft

Nearby Homes

IDX information is provided exclusively for consumers’ personal, non-commercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, and that the data is deemed reliable but is not guaranteed accurate by BeachesMLS. All listings featuring the BMLS logo are provided by BeachesMLS, Inc. This data is not verified for authenticity or accuracy and may not reflect all real estate activity in the market. Based on information © 2026 BeachesMLS, Inc. All Rights Reserved.

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