1 E Sister Rck Is, Marathon, FL 33050

Marathon
Local realty services provided by:Countywide Properties ERA Powered
1 E Sister Rck Is,Marathon, FL 33050
$16,000,000
Virtual Tour
  • 4 Beds
  • 3 Baths
  • 2,304 sq. ft.
  • Single family
  • Active
Listed by: vladimir rochebrun, aaron rosenthal
Office: compass florida, llc.305-909-7080
MLS#:A12069701
Source:SEFMLS

Price summary

  • Price:$16,000,000
  • Price per sq. ft.:$2,777.78

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...

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Home facts

  • Year built:2015
  • Subdivision & Development:Off Shore Island
  • Listing ID #:A12069701
  • Updated:October 07, 2026 at 09:55 AM

Rooms and interior

  • Bedrooms:4
  • Total bathrooms:3
  • Full bathrooms:3
  • Flooring:Tile
  • Dining Description:Living/Dining Room
  • Kitchen Description:Built In Oven, Dishwasher, Electric Range, Microwave, Refrigerator, Trash Compactor
  • Bedroom Description:Split Bedroom
  • Living area:2,304 sq. ft.

Heating and cooling

  • Cooling:Central Air
  • Heating:Solar
  • Central air:Yes

Structure and exterior

  • Roof:Metal
  • Year built:2015
  • Building area:2,304 sq. ft.
  • Lot area:6.44 Acres
  • Lot Features:Flood Zone
  • Architectural Style:Detached, One Story
  • Construction Materials:Block
  • Exterior Features:Deck, Fruit Trees, Open, Porch, Security High Impact Doors, Storm Security Shutters, Wrap Around
  • Levels:1 Story

Utilities

  • Sewer:Septic Tank

Finances and disclosures

  • Price:$16,000,000
  • Price per sq. ft.:$2,777.78
  • Tax amount:$25,482 (2025)

Features and amenities

  • Appliances:Built-In Oven, Dishwasher, Dryer, Electric Range, Microwave, Refrigerator, Satellite Dish, Solar Hot Water, Trash Compactor, Washer
  • Laundry features:Dryer, Washer
  • Amenities:Closet Cabinetry, Fireplace, Impact Glass Windows, Lighting
  • Pool features:In Ground, Pool
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