$10,500,000
Marathon, FL 33050
MLS# 618926
1 / 50
Property Description
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 Keysâ€''such as Islamoradaâ€''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 presenceâ€''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.
Details
Maps
Contract Information
Listing Board: Florida Keys
ROGO Exempt: No
Limited Representation: No
As is Rght to Inspct: Yes
Potential Short Sale: No
Bank Owned: No
Current Price: $10,500,000
Listing Date: 2026-02-10
List Price: $10,500,000
Location, Tax & Legal
Unit #: 0
City: MARATHON
Off Shore Island: No
Mile Marker: 58.9
Marathon Neighborhood: Grassy Key
Side: Ocean
Alternate Key #: 1457736
Add'l Parcel #1: 00374660-000000
Parcel #: 00374660000000
Add'l Parcel #2: 00374670-000000
Zoning: MU - Mixed Use Commercial Mixed Use
Deed Restrictions: Unknown
Legal: Bk 58 Lt 11 Crains Subd Pb1-51 Of Grassy Key Or135-95-96 Or407-765-768 Or475-436-438 Or683-887 Or685-713 Or908-1005 Or15
Taxes: 6342.39
Tax Year: 2025
Street #: 57478
Street Name: Overseas
Street Suffix: Highway
Key/Island: Marathon
State/Province: FL
Zip Code: 33050
County: Monroe
Subdivision: Crains Sub (58.0)
Area: 19 - Crawl Key & Grassy Key
General Property Description
Realtor.COM Type: Vacant Land
Waterfront: Yes
Control Depth: 0
Lot SqFt: 103025
Remarks & Misc
Remarks – Consumer: 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 Keysâ€''such as Islamoradaâ€''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 presenceâ€''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.
Directions: HAVE ACCESS TO AVAILABLE BUILDING RIGHTS., PLEASE CALL FOR MORE INFORMATION.
Assoc/Misc Info
Mandatory Home Owners Asc: No
1st Right of Refusal: No
Miscellaneous Info
Mobile Home Lot: No
Dockage
None: 1
Tax Exemptions
None: 1
Waterfront
Oceanfront: 1
Waterview
Ocean View: 1
Open Water View: 1
Land Size
5 Less Than 10 Acres: 1
Financial Status
Bank Owned: No
Potential Short Sale: No
Status Change Info
Status: Active
Property Features
Tax Exemptions: None
Waterfront: Oceanfront
Dockage: None
Waterview: Ocean View; Open Water View
Land Size: 5 Less Than 10 Acres
Listing Office: Compass Florida - Miami Beach
Last Updated: March - 20 - 2026
The data relating to real estate for sale on this web site comes in part from the Florida Keys MLS, Inc. Information provided is deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. The information being provided is for consumers’ personal, non-commeral use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. IDX data is deemed reliable but is not guaranteed accurate by the MLS.