Address
1 E Sister Rck Is, Marathon, FL
Price
$ 16,000,000
Property Attributes
- MLS#A12069701
- TypeSingle Family
- Listing Status Active
- CountyMonroe
- CityMarathon
- Area98 Florida Keys
- NeighborhoodOff Shore Island
- Zip33050
- Style
- Year Built2015
- Taxes$ 25482
- Price$ 16,000,000
- Bedrooms4
- Full Bathrooms3
- Half Bathrooms0
- Sqr Footage2304
Data Source:
Southeast Florida MLS (SEFMLS)
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.
| Price History | |
|---|---|
| 8/12/2026 | Listed $16,000,000 |
General Features
| Sewer | Septic Tank |
|---|---|
| Heating | Solar |
| Cooling | Central Air |
| Possession | Closing & Funding |
| Roof | Metal |
| Appliances | Built-In Oven,Dryer,Dishwasher,Electric Range,Microwave,Other,Refrigerator,Solar Hot Water,Trash Compactor,Washer |
| Patio/Porch Features | Deck,Open,Porch,Wrap Around |
| Architectural Style | Detached,One Story |
| Pool Features | In Ground,Pool |
| Restrictions | No Restrictions |
| Construction Materials | Block |
| Year Built | 2015 |
| View | Ocean |
| Stories Count | 1 |
| Property Subtype | Single Family Residence |
| Tax Year | 2025 |
| Waterfront Features | Navigable Water,Ocean Access,Ocean Front |
| Community Features | Boat Facilities |
| County | Monroe |
| Property Type | Residential |
| Subdivision Name | Off Shore Island |
| Facing Direction | East |
| Garage Y/N | false |
| Other Structures | Guest House |
| Full Baths | 3 |
| Special Listing Conditions | Listed As-Is |
| Status | Active |
| City | Marathon |
| Senior Community Y/N | false |
| Zoning Description | 0S |
| MLS Area | 98 Florida Keys |
| Lot Size Units | Square Feet |
| Lot Size Square Feet | 280628 |
| Carport Y/N | false |
| Listing Terms | Cash,Conventional,Other |
| Year Built Details | Effective Year Built |
| Tax Annual Amount | 25482 |
| MLS Area Minor | Other Geographic Area (Out Of Area Only) |
| Lease Considered Y/N | false |
| Virtual Tour | https://www.propertypanorama.com/instaview/mia/A12069701 |
| Standard Status | Active |
| Occupancy Type | Call Agent |
| Property Sub Type Additional | Single Family Residence |
| PostalCity | Marathon |
| Legal Description | 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- |
Interior Features
| Interior Amenities | Built-in Features,Bedroom on Main Level,Closet Cabinetry,Eat-in Kitchen,First Floor Entry,Fireplace,Living/Dining Room,Split Bedrooms |
|---|---|
| Flooring | Other,Tile |
| Air Conditioning Y/N | true |
| Window Features | Impact Glass |
| Fireplace Y/N | true |
| Total Bedrooms | 4 |
| Total Baths | 3 |
Exterior Features
| Exterior Amenities | Deck,Fruit Trees,Security/High Impact Doors,Lighting,Porch,Storm/Security Shutters |
|---|---|
| Parking Features | None |
| Lot Features | 5-10 Acres |
| Water Source | Other |
| Lot Size Area | 280628 |
| Building Area Total | 5760 |
| Frontage Length | 800 |
| Private Pool | true |
| Waterfront Y/N | true |
| Other Equipment | Satellite Dish |
Amenities
- Foreclosure
- Views
- Short Sale
- New Construction
- Adult 55+
- Lease To Own
- No HOA Fees
- Furnished
- Primary On Main
- Air Conditioning
- Seller Finance
- Green
- Fixer Upper
- Horse
- Golf
- Fireplace
- Deck
- Garage
- Basement
- Pool
Property vs Single Family Average in 33050
Price
Taxes
Year Built
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Data Last Updated: September 12, 2026 12:31 AM UTC
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