1 E Sister Rck Is
Marathon, FL 33050
4
Bed
3
Bath
2,304Sqft
280,628Sqft(Lot)
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 s
Property Details
Map
Map
Features
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Bedroom Information
Total beds: 4Bathroom Information
Total Baths: 3 Full Baths: 3Roofing Information
MetalFlooring Information
Other, Tile -
Interior Features
BuiltInFeatures, BedroomOnMainLevel, ClosetCabinetry, EatInKitchen, FirstFloorEntry, Fireplace, LivingDiningRoom, SplitBedroomsRoof: MetalAppliances: BuiltInOven, Dryer, Dishwasher, ElectricRange, Microwave, Other, Refrigerator, SolarHotWater, TrashCompactor, WasherWindow Features: ImpactGlass -
Heating & Cooling
Heating: Solar Has Cooling: Yes Cooling: CentralAir Water front: 1
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Building Information
Year Built: 2015Building Area Total: 5760Construction Materials: BlockStories: 1Frontage Length: 800Patio And Porch Features: Deck, Open, Porch, WrapAroundPool Features: InGround, PoolPrivate Pool: YesWater front Features: NavigableWater,OceanAccess,OceanFrontView: Ocean -
Exterior Features
Exterior Features: Deck, FruitTrees, SecurityHighImpactDoors, Lighting, Porch, StormSecurityShutters
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Lot Information
Main Square Feet: 280628 Lot Size Square Feet: 280,628 Lot Description: FiveToTenAcresProperty Information
Subdivision: Off Shore Island Source Property Type: Residential MLS Area Minor: Other Geographic Area (Out Of Area Only) Zoning Description: 0S Property SubType: Single Family Residence Direction Faces: East Property Age: 11
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Listing Price Information
Listing Price: $16000000Cash, Conventional, Other
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Tax Information
Parcel Number: 00105590-000000 Tax Year: 2025 Annual Tax: $25482 Tax Legal Desc: 23 66 32 LOT 2 (US PATENT 1186533) EAST SISTER ROCK AND ADJACENT BAY BOTTOM G71-513(II DEED 20369) OR374-139/40 OR752-1640 OR752-1642 OR755-
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Virtual Tour
Parking Information
None
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Location Information
WaterSource: Other
How much is this property worth?
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Nearby Home Value
| Address | Estimate | Bed | Bath | Sq. Ft | Lot Size |
|---|---|---|---|---|---|
| 1361 Overseas Highway #.., Marathon, FL, 33050 | $100,000 | 1 | 1 | 682 | -- |
| 101 11th Street #19, Marathon, FL, 33050 | $399,000 | 2 | 2 | 960 | 100,754 Sqft |
| 10999 Ave 3rd Avenue, Marathon, FL, 33050 | $1,700,000 | 2 | 3 | 1,247 | 10,125 Sqft |
| 1361 Overseas Highway #IO, Marathon, FL, 33050 | $99,900 | 1 | 1 | 468 | 623,779 Sqft |
| 1361 Overseas Highway #G5, Marathon, FL, 33050 | $110,000 | 2 | 2 | 748 | -- |
| 205 Stirrup Key Boulevard, Marathon, FL, 33050 | $2,249,000 | 4 | 3 | 3,414 | 11,425 Sqft |
| 865 50th Street Gulf, Marathon, FL, 33050 | $4,490,000 | 5 | 5 | 3,826 | 7,128 Sqft |
| 59761 Overseas Highway .., Marathon, FL, 33050 | $699,000 | 2 | 2 | 1,496 | -- |
| 59720 Overseas Highway .., Marathon, FL, 33050 | $3,400,000 | 5 | 5 | 3,013 | -- |
| 59720 Overseas Highway .., Marathon, FL, 33050 | $3,100,000 | 5 | 5 | 3,013 | -- |
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ByOwner last updated this listing 09/05/2026 @ 07:12
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