99 E Ocean
Marathon, FL 33050
4
Bed
3
Bath
2,304Sqft
1,334Sqft(Lot)
PRIVATE ISLAND INVESTMENT OPPORTUNITY IN THE FLORIDA KEYS! East Sister Rock is a rare, income-producing private island located just ¼ mile offshore from Marathon. Successfully operating as a luxury vacation rental and event venue for over 20 years, this one-of-a-kind property offers an exceptional blend of lifestyle, hospitality, and investment potential. Open to partnership and fractional ownership opportunities. A short boat ride across crystal-clear waters brings you to a self-sustaining tropical retreat featuring a 3BR/2BA main residence, detached guest house, a 100-foot deep-water dock capable of accommodating multiple vessels, helipad, wind and solar power, whole-house generator, and freshwater cistern. Guests enjoy world-class snorkeling, fishing, diving, kitesurfing, and watersport
Property Details
Map
Map
What's Nearby
Nearby Areas
Features
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Bedroom Information
Total beds: 4Bathroom Information
Total Baths: 3 Full Baths: 3Roofing Information
AluminumFlooring Information
Vinyl -
Interior Features
BreakfastBar, BedroomOnMainLevel, ClosetCabinetry, DualSinks, EatInKitchen, FamilyDiningRoom, HighCeilings, KitchenDiningCombo, Pantry, SeparateShower, BarRoof: AluminumAppliances: Dryer, Dishwasher, ElectricWaterHeater, GasRange, GasWaterHeater, IceMaker, Microwave, Refrigerator, SolarHotWater, WaterPurifier, Washer -
Heating & Cooling
Has Heating: Yes Heating: Central, WallFurnace Has Cooling: Yes Cooling: CentralAir, WallWindowUnits Water front: 1
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Building Information
Year Built: 1980Construction Materials: BlockStories: 1Frontage Length: 500.00Patio And Porch Features: Deck, Porch, WrapAroundPool Features: Fiberglass, InGroundPrivate Pool: YesWater front Features: NoFixedBridges,OceanFrontView: Ocean, WaterAssociation Fee Frequency: Annually -
Exterior Features
Exterior Features: Barbecue, OutdoorLivingArea, OutdoorShower
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Lot Information
Lot Dimensions: 1.25 Main Square Feet: 1334 Lot Size Acres: 0.03 Lot Description: OneToTwoAcresProperty Information
Subdivision: Ocean E Source Property Type: Residential Postal Code Plus 4: 2551 Property SubType: Single Family Residence Direction Faces: North Levels: One Property Age: 46
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Listing Price Information
Listing Price: $16000000Assumable, Cash, Conventional, Cryptocurrency, OwnerWillCarry
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Tax Information
Parcel Number: 00104670000401 Tax Year: 2025 Annual Tax: $16899 Tax Legal Desc: 14 66 32 BOOT KEY (AKA UNRECORDED OCEAN EAST INC REV SURVEY 4-14-75 PT LOT 1) OR555-203 OR589-894 OR772-1173 OR983-1569 OR1364-739 OR1547-23
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Virtual Tour
Parking Information
DrivewayGarage Information
Pets Allowed: YesHomeowners Association Information
HOA: $500.00Association Amenities: GatedCommunity Features: HomeOwnersAssociation, StreetLights
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School Information
Elementary School: Stanley Switlik Junior High School: Marathon Senior High School: Coral Shores -
Utility Information
CableNotAvailable -
Location Information
WaterSource: Other Security Features: FireAlarm,SmokeDetectors
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 | $424,999 | 2 | 2 | 960 | 960 SqFt |
| 6099 Overseas Hwy 55w, Marathon, FL, 33050 | $365,000 | 1 | 1 | -- | |
| 6501 Oceanview Ave, Marathon, FL, 33050 | $955,000 | 2 | 2 | 972 | 972 SqFt |
| 865 50th Street Gulf, Marathon, FL, 33050 | $4,490,000 | 5 | 5 | 3,826 | 3,826 SqFt |
| 716 26th Street Ocean, Marathon, FL, 33050 | $890,000 | 3 | 3 | 1,320 | 1,320 SqFt |
| 329 63rd Court Gulf, Marathon, FL, 33050 | $675,000 | -- | -- | 1,302 | 1,302 SqFt |
| 227 Sombrero Beach Rd, Marathon, FL, 33050 | $1,499,999 | 4 | 3 | 1,840 | 1,840 SqFt |
| 1403 Grouper Dr, Marathon, FL, 33050 | $999,900 | 3 | 1 | 1,892 | 1,892 SqFt |
| 128 Sunrise Drive, Marathon, FL, 33050 | $7,750,000 | 4 | 5 | -- | |
| 12400 Overseas Hwy, Marathon, FL, 33050 | $1,175,000 | 3 | 3 | 1,493 | 1,493 SqFt |
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ByOwner last updated this listing 06/19/2026 @ 18:20
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