NyeMosher Schwartz, PA
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1 E Sister Rck Is , Marathon, FL 33050

$16,000,000
  • 1 E Sister Rck Is , Marathon, FL 33050 Main Photo

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New to the Market Active
BEDS4 BATHS3 full SQUARE FEET2,304 MLS#A12069701
STATUSActive PROPERTY TYPEResidential - Single Family SUBDIVISIONOff Shore Island

Property 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.

1 E Sister Rck Is | MLS# A12069701

This single family home located at 1 E Sister Rck Is , Marathon, FL 33050 is currently listed for sale with an asking price of $16,000,000. This property was built in 2015 and has 4 bedrooms and 3 full baths with 2304 sq. ft. E Sister Rck Is is located in the Off Shore Island subdivision. Search Off Shore Island real estate on www.nyesellshomes.com today.

Property Features

Property Type: Residential - Single Family
Cooling: Central Air
Heating: Solar
Home Style: Detached, One Story
Lot Size: 6.44 Acres
Roof Type: Metal Roof
Taxes: $25,482
Year Built: 2015

Amenities

First Floor Entry
Built-in Features
Closet Cabinetry
3 Bedroom Split
Family Room
Lighting
Fruit Trees

Feature Descriptions

Appliances: Dishwasher, Dryer, Electric Range, Microwave, Other Equipment/Appliances, Refrigerator, Solar Hot Water, Trash Compactor, Wall Oven, Washer
Community Features: Boating
Crops Included Y/N: No
Days on Site: 2
Door Features: High Impact Doors
Exterior: Concrete Block Construction
Fireplace: Fireplace
Flooring: Other, Tile
Home Warranty Y/N: No
Lease Considered Y/N: No
Listing Terms: All Cash, Conventional
Lot: 5 To Less Than 10 Acre Lot
Other Equipment: Satellite Dish
Parcel#: 00105590-000000
Parking: None
Parking Notes: None
Patio/Porch: Deck, Open Porch, Wrap Around
Pool: In Ground
Property Attached Y/N: No
Property Sub-Type: Single Family Residence
Sewer: Septic Tank
Special View Info: Ocean, Direct Ocean
Water: Other
Water Features: Ocean Access, Navigable Water, Ocean Front
Window: Complete Impact Glass, Hurricane Shutters

Listed By / Shown By

Listed By

Agency Name: Compass Florida, LLC
Agency Phone: 305-909-7080

Shown By

Agent Name: Nye Mosher Schwartz, PA
Agent Phone: Cell: (954) 701-3346
Agency Title: Realty 100

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Estimated Payment

$ 42,399.23 per month $35,609.06 Principal & Interest $2,123.50 Property Tax $4,666.67 Homeowner's Insurance

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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information on this site was last updated 08/14/2026. The listing information on this page last changed on 08/14/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Fri 08/14/2026 12:01:36 AM EST) or Miami MLS (last updated Thu 08/13/2026 11:59:18 PM EST) or Stellar MLS (last updated Thu 08/13/2026 11:44:04 PM EST) or Beaches MLS (last updated Thu 08/13/2026 11:57:59 PM EST). Real estate listings held by brokerage firms other than Realty 100 may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.
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