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  • 57478 Overseas Highway 0, Marathon, FL 33050 (MLS# 618083)

57478 Overseas Highway 0, Marathon, FL 33050

$11,500,000
Property Type: Commercial Sale Lot Size (sq. ft.): 103,025 Status: Active
Current Price: $11,500,000 List Date: 1/12/2026 Last Modified: 1/14/2026

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 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.

More Information MLS# 618083

Contract Information

Listing Board: Florida Keys Limited Representation: No As is Rght to Inspct: Yes Potential Short Sale: No Bank Owned: No Current Price: $11,500,000 Listing Date: 2026-01-08 List Price: $11,500,000

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 #: 00374650-000000 Add'l Parcel #2: 00374670-000000 Zoning: MU - Mixed Use Commercial Mixed Use Legal: BK 58 LT 10 CRAINS SUBD PB1-51 OF GRASSY KEY OR135-95-96 OR140-29-30 OR407-765-768 OR474-436-438 OR683-887 OR685-713 OR Taxes: 11195.1 Tax Year: 2022 Street #: 57478 Street Name: Overseas Street Suffix: Highway Key/Island: Marathon State/Province: FL Zip Code: 33050 Subdivision: Grassy Key (58.9) County: Monroe Area: 19 - Crawl Key & Grassy Key

General Property Description

Realtor.COM Type: Commercial Waterfront: Yes Control Depth: 0 Lot Size: 103,025 Lot SqFt: 103025 SqFt Source: Property Data Card Style: Commercial

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 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.

Association Info

Mandatory Home Owners Asc: No 1st Right of Refusal: No

Type

Other Comrcl Style: 1

Fee Includes

None: 1

Dockage

None: 1

Appliances

No Appliances: 1

Waterfront

Oceanfront: 1

Waterview

Ocean View: 1

Construction

Other: 1

Land Size

5 Less Than 10 Acres: 1

Utilities

Sewer Available: 1

Financial Status

Bank Owned: No Potential Short Sale: No

Status Change Info

Status: Active

Property Features

Type: Other Comrcl Style Waterfront: Oceanfront Waterview: Ocean View Dockage: None Utilities: Sewer Available Appliances: No Appliances Construction: Other Land Size: 5 Less Than 10 Acres Fee Includes: None

Documents

Listing Office: Compass Florida - Bayshore Drive
Last Updated: January - 14 - 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.

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