1 E Sister Rock Island
MARATHON, FL 33050
4
Bed
3
Bath
2,304Sqft
Own an entire private island in the heart of the Florida Keys. Located just 1/4 mile offshore from Marathon, East Sister Rock Island offers extraordinary privacy surrounded by turquoise waters, yet remains only minutes from the mainland.The property encompasses approximately 6.5 acres, including approximately 5.8 acres of surrounding seabed that create an exceptional marine setting for snorkeling, swimming, kayaking, paddle boarding, fishing and exploring the crystal-clear waters of the Keys.At the center of the island is a beautifully updated 3-bedroom, 2-bath main residence with a detached guest house, offering over 5,000 total SF of living and entertaining space. Recent interior renovations include a beautifully updated kitchen with gorgeous countertops and modern finishes. A 12-foot-wi
Property Details
Map
Map
What's Nearby
Nearby Areas
Features
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Bedroom Information
Total Bedrooms: 4Bathroom Information
Total Baths: 3 Full Baths: 3 -
Interior Features
Built-in Cabinets,Bar,Walk-in Closet(s),Granite Counter Top Appliances: Washer,Stainless Steel Appliance(s),Microwave,Oven,Range,Refrigerator,Dishwasher,Dryer -
Roofing Information
Metal RoofFlooring Information
Tile,WoodHeating & Cooling
Cooling: Central Air Heating: Central Water Front: Yes Oceanfront Ocean View,Open Water ViewWindow Information
Window Treatments: Impact Rstnce Window
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Building Information
Year Built: 1980 Floor Location: 280526 Construction: CBS,Concrete Security System: Other Roof: Metal Roof -
Exterior Features
Detached Guest QtrsPool Information
In Ground,Decked
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Lot Information
Lot Dimensions: X Lot SqFt: 280,526 Lot SqFt Source: Tax Records 23 66 32 Lot 2 (Us Patent 1186533) East Sister Rock And Adjacent Bay Bottom G71-513(Ii Deed 20369) Or374-139/40 Or752-16 -
Property Information
SQ ft (Living Area): 2,304 View: Ocean View,Open Water View Subdivision: Misc Sombrero Area (50.0) Stories: 1 Story
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Listing Price Information
List Price: $16,000,000 -
Listing Information
Seller Finance Psble,Other Specify,Conventional,Cash
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Tax Information
Taxes: $25,482 Tax Year: 2025 Parcel Number: 00105590000000 Tax Exemptions: None
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Multi-Unit Information
Pets Allowed: Pets Allowed -
Homeowners Association Information
Mandatory Home Owners Asc: No 1st Right of Refusal: No Association Fee: $0.00
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Utility Information
Septic Tank,Solar Power,Satellite Dish,Whole House Generatr
How much is this property worth?
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Nearby Home Value
| Address | Estimate | Bed | Bath | Sq. Ft | Lot Size |
|---|---|---|---|---|---|
| 101 11th Street Ocean, .., Marathon, FL, 33050 | $459,900 | 2 | 2 | 960 | 960 SqFt |
| 915 80th Street, Marathon, FL, 33050 | $775,000 | 3 | 2 | 1,296 | 1,296 SqFt |
| 59761 Overseas Highway .., Marathon, FL, 33050 | $699,000 | 2 | 2 | 1,496 | 1,496 SqFt |
| 59720 Overseas Highway .., Marathon, FL, 33050 | $3,400,000 | 5 | 5 | 3,013 | 3,013 SqFt |
| 59720 Overseas Highway .., Marathon, FL, 33050 | $3,100,000 | 5 | 5 | 3,013 | 3,013 SqFt |
| 59720 Overseas Highway .., Marathon, FL, 33050 | $2,975,000 | 5 | 5 | 3,013 | 3,013 SqFt |
| 59720 Overseas Highway .., Marathon, FL, 33050 | $3,500,000 | 4 | 5 | 3,013 | 3,013 SqFt |
| 59733 Paradise Place, Marathon, FL, 33050 | $700,000 | 4 | 2 | 1,447 | 1,447 SqFt |
| 91 Dorsett Drive DRIVE, Marathon, FL, 33050 | $787,000 | 2 | 2 | 1,200 | 1,200 SqFt |
| 58950 Overseas Highway .., Marathon, FL, 33050 | $1,090,000 | 3 | 2 | 1,404 | 1,404 SqFt |
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ByOwner last updated this listing 08/24/2026 @ 08:44
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