Date
Details
Price
Change
Source
6/15/2026
Listed
$16,000,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
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1/21
$16,000,000
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1/21
Property Description
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 watersports directly from the property. Wake to unobstructed Atlantic sunrises from the wraparound veranda and end each day with spectacular Florida Keys sunsets. Whether seeking a private family compound, luxury rental asset, event destination, or unique investment opportunity, East Sister Rock delivers an unparalleled ownership experience. Visit Floridaisland.com for details.
Full Property Details
Full Property Details for 99 E Ocean E
General
- Price: $16,000,000
- HOA FEE: $42/month
- HOA FEE FREQ.: Annually
- Taxes: $16,899 (2025)
- Status: Active
- Type: Single Family
- Source: Greater_Miami
- MLS ID: A12037474
- Updated: 7/24/2026
- Added to Site: 41 day(s) ago
Interior
- Interior Features: First Floor Entry, Bar, Closet Cabinetry, Pantry, Volume Ceilings
- Fireplace: Yes
- Fireplace(s): Fireplace
- Appliances: Bottled Gas, Dishwasher, Dryer, Electric Water Heater, Gas Range, Gas Water Heater, Ice Maker, Microwave, Water Purifier, Refrigerator, Solar Hot Water, Washer
- Furnished: Yes
- Furnishings: Furnished
- Flooring: Vinyl
Rooms
Bathrooms
- Total Bathrooms: 3
- Full Bathrooms: 3
- Primary Bathroom: Dual Sinks, Shower Only
Bedrooms
- Total Bedrooms: 4
- Bedroom Features: Entry Level
Other Rooms
- Living Room: Guest House Sq. Ft.
- Eat-in kitchen: Yes
- Dining Room: Eat-In Kitchen, Family/Dining Combination, Florida/Dining Combination, Kitchen Dining, Snack Bar/Counter
Additional Information
- Pool: Yes
- Pool Description: In Ground, Fiberglass, 10x42
- Spa: Yes
- Security/Safety: Fire Alarm, Smoke Detector
- Equipment: Whole House Permanent Generator, Satellite Dish, Natural Gas
Exterior
- Exterior Features: Barbecue, Outdoor Shower
- Deck/Patio: Deck, Wrap Around
Parking
- Carport Spaces: 4
- Covered Spaces: 4
- Parking Features: Driveway
Location
- Area: Ocean E
- County: Monroe County
- Subdivision: Ocean E
- Building Name: Ocean E
- Direction Faces: North
Community
- Community Name: Ocean E
- Gated community: Yes
- Association: Yes
Heating & Cooling
- Air Conditioning: Yes
- Cooling Type: Central Air, Wall/Window Unit(s)
- Heating Type: Central, Window/Wall
Utilities
- Sewer: Septic Tank
- Water: Other
Structural Information
- Architectural Style: Attached, Detached, One Story
- Structure Type: House
- Detached/Attached: Detached
- Construction: CBS Construction
- Roof: Aluminum
- Windows: Complete Accordian Shutters, Complete Impact Glass, Hurricane Shutters, High Impact Windows
- Doors: High Impact Doors
- Square Feet: 2,304
- Living Area: 2,304 Sq. Ft.
- Year Built: 1980
- Property Condition: Substantially Remodeled
Additional Structures
- Other Structures: Extra Building/Shed, Guest House
Lot Features
- Property View: Ocean, Direct Ocean, Water
- Lot Size (Sq. Ft.): 1,334
- Frontage Feet: 500
- Lot Features: 1 To Less Than 2 Acre Lot
- Zoning: is
Water Features
- Water Front: Yes
- Water View: Yes
- Water Front Desc.: Ocean Access, Ocean Front
Green Features
- Energy Efficient: Appliances, Construction, Doors, Energy Generation, HVAC, Water Heater, Solar Panels
Financial Considerations
- Price Per Sq. Ft.: $6,944.44
- Association Fee: $500
- Assoc Fee Freq.: Annually
- Tax Amount: $16,899
- Tax Year: 2025
- Terms: All Cash, Conventional, Cryptocurrency, Owner Will Carry
Disclosures and Reports
- Ownership: Corporation
- Legal Description: 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
- Restrictions: See Broker Remarks
- Inclusions: Deeded Dock, Private Dock, Unrestricted Salt Water Access
- Property ID: 00104670-000401
Listed by Frank Taylor Real Estate Inc
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Listing agent
— 99 E Ocean E —
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Schools
Schools serving 99 E Ocean E
School District:Monroe County School District, Middle Torch Key, FL
| Name | Grades | Distance |
|---|---|---|
Stanley Switlik Elementary School 3400 Overseas Highway, Marathon, FL 33050 | PK-5 | 5.2 mi |
Marathon School 350 Sombrero Beach Road, Marathon, FL 33050 | 6-12 | 4.3 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 99 E Ocean E
Tax History
Tax History for 99 E Ocean E
Year
Property Taxes
Change
Tax Assessment
Change
2025
$1,873
1%
$230,157
—
2024
$1,860
117%
$230,310
103%
2023
$857
32%
$113,617
113%
2021
$647
-6%
$53,309
-16%
2022
$685
7%
$63,617
19%
2019
$640
5%
$53,309
2%
2018
$612
7%
$52,336
9%
2017
$573
2%
$48,086
5%
2016
$563
4%
$45,581
5%
2015
$540
34%
$43,375
114%
2014
$403
2%
$20,240
10%
2013
$395
—
$18,400
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 99 E Ocean E
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99 E Ocean E, Marathon, FL 33050 (MLS# A12037474) is a Single Family property with 4 bedrooms and 3 full bathrooms. 99 E Ocean E is currently listed for $16,000,000 and was received on June 15, 2026. Want to learn more about 99 E Ocean E? Do you have questions about finding other Single Family real estate for sale in Marathon? You can browse all Marathon real estate or contact a Coldwell Banker agent to request more information.