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  3. 57478 Overseas Hwy Marathon, FL - 33050
  • MLS® #: A11940104
  • 57478 Overseas Hwy
  • Marathon, FL 33050
  • $11,500,000
  • 6.00 Acres
  • Land

Rare oceanfront development opportunity in the heart of the Florida Keys. Encompassing nearly 6 acres of pristine oceanfront land in Grassy Key, this exceptional parcel presents an ideal canvas for developers seeking to create luxury residential units with direct oceanfront and beach access. Surrounded by unspoiled natural beauty and tranquil beaches, the property offers immediate proximity to shopping, fine dining, spas, marinas, and world-class boating. Residents will enjoy unparalleled access to deep-sea fishing, scuba diving, snorkeling, and vibrant coral reefs, all set against the backdrop of the Keys’ iconic turquoise waters. Located in Marathon, often referred to as the Heart of the Florida Keys, the site benefits from a highly desirable central Keys location, conveniently positioned between the Upper Keys—such as Islamorada—and the Lower Keys, including Key West. Marathon is known for its rich maritime history, local airport, and accessibility, serving as a central hub comprising islands such as Vaca Key, Duck Key, and Grassy Key. A truly rare offering combining scale, location, and oceanfront presence—an exceptional opportunity to develop a legacy project in one of Florida’s most coveted coastal destinations. Please read the broker's remarks for detailed information on this offering.

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Essential Information

  • MLS® #A11940104
  • Price$11,500,000
  • CAD Dollar$15,740,625
  • UK Pound£8,532,425
  • Euro€9,754,875
  • Bathrooms0.00
  • Acres6.00
  • TypeLand
  • StatusActive

Community Information

  • Address57478 Overseas Hwy
  • Area98 Florida Keys
  • SubdivisionCRAINS SUBD
  • CityMarathon
  • CountyMonroe
  • StateFL
  • Zip Code33050

Amenities

  • UtilitiesNone
  • Is WaterfrontYes
  • WaterfrontOcean Access, Ocean Front

Exterior

  • Lot Description360x465
  • Office: Compass Florida, Llc
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57478 Overseas Hwy on www.webmail.jupiteroceanfrontcondos.us

Offered at the current list price of $11,500,000, this home for sale at 57478 Overseas Hwy features bedrooms and 0 bathrooms. This real estate listing is located in CRAINS SUBD of Marathon, FL 33050 . 57478 Overseas Hwy is listed under the MLS ID of A11940104 and has been on the Marathon real estate market for 28 days.

The data relating to real estate on this web site comes in part from the Internet Data Exchange program of the MLS of the REALTOR® Association of Greater Miami and the Beaches, and is updated as of February 21st, 2026 at 8:31pm CST (date/time).

All information is deemed reliable but not guaranteed by the MLS and should be independently verified. All properties are subject to prior sale, change, or withdrawal. Neither listing broker(s) nor Waterfront Properties and Club Communities shall be responsible for any typographical errors, misinformation, or misprints, and shall be held totally harmless from any damages arising from reliance upon these data. © 2026 MLS of RAMB.

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