
Land with Home for Sale in Marathon, Florida
1 E Sister RCK Is, Marathon, FL 33050
Own an entire private island in the Florida Keys, just 1/4 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.
Location
- Street address
- 1 E Sister RCK Is
- County
- Monroe County
- Zip code
- 33050
- Community
- Off Shore Island
Property details
- Acreage
- 6.442 acres
- Zoning
- 0S
- MLS #
- MAOR A12069701
- Posted
Property taxes
- 2025
- $25,482
Parcels
- 00105590-000000
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-
Details and features
Listing
- Type
- Residential
- Subtype
- Single Family Residence
Lot
- View
- Ocean
- Waterfront
- Navigable Water, Ocean Access, Ocean Front
- Features
- 5-10 Acres
Exterior
- Pool
- Deck, Porch
- Structures
- Guest House
- Features
- Fruit Trees, Lighting, Security/High Impact Doors, Storm/Security Shutters
Structure
- Stories
- 1
- Sewer
- Septic Tank
- Heating
- Solar
- Cooling
- Central Air
- Materials
- Block
- Roof
- Metal
Interior
- Rooms
- Bathroom x 3, Bedroom x 4, Dining Room
- Flooring
- Tile
- Fireplaces
- Yes
- Appliances
- Built-In Oven, Dishwasher, Dryer, Electric Range, Microwave, Refrigerator, Solar Hot Water, Trash Compactor, Washer
- Security
- Security
- Features
- Bedroom On Main Level, Built-In Features, Closet Cabinetry, Eat-In Kitchen, Fireplace, First Floor Entry, Living/Dining Room, Split Bedrooms
Property utilities
| Category | Type | Status |
|---|---|---|
| Power | Solar | Connected |
Listing history
| Date | Event | Price | Change | Source |
|---|---|---|---|---|
| Aug 12, 2026 | New listing | $16,000,000 | — | MAOR |
























