57478 Overseas Highway, Marathon, FL 33050

Building Details

Year Built

1978

Listing office Compass Florida, LLC. i***@compass.com Show Phone

Listing date Jun 17, 2026

Source Crexi

Displayed information is deemed reliable but is not guaranteed and should be independently verified.

All listing content including descriptions, pricing, images are the copyrighted material of Compass Florida, LLC.

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Overview

This oceanfront development site totals 5.9± acres on Grassy Key, featuring 370± feet of ocean frontage with Atlantic Ocean views. The property includes riparian rights and a pre-existing dock, which may support a simpler dock permitting process. The site has been conditionally approved for a 9 duplex development plan designed for 18 residential units, with 4 bedroom and 3 bathroom floor plans and 1,767± square feet.

The site is located in the Florida Keys, offering proximity to Marathon and regional services. Marathon International Airport is about 5 miles away, and multiple health care facilities and a hospital are described as being 3 to 9 miles from the property. Utilities are noted as available to the site, including water, sewer, and electric.

For developers and land buyers, this parcel presents a defined basis for residential planning, supported by the stated conditional approval for duplex construction and the presence of riparian rights and an existing dock. It is being offered in connection with a United States Bankruptcy Auction, with stalking horse offer procedures and an identified bid deadline of 5:00 PM EDT Monday, July 27th, 2026, subject to the terms of sale.

Suggested Use

Department Store Accounting Firm Restaurant Bed & Breakfast Real Estate Agency Hotel & Motel

Zoning and permitted uses should be independently verified with local authorities.

Location Insight

• Map
• Local Demand

City

Marathon

County

Monroe

State

Florida

Longitude

-80.9630513

Latitude

24.7528736

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FAQs

What type of property is this?

Waterfront Land - Oceanfront land with extensive frontage and conditional approval for a duplex residential project, plus riparian rights.

Where is this waterfront land located?

The property is located at 57478 Overseas Highway Marathon, FL.

What are key features of this property?

This property features: 5.9± acre oceanfront development site on Grassy Key (Marathon) with 370± feet of ocean frontage; Conditionally approved for a 9 duplex development totaling 18 residential units; Plans include 4‑bedroom, 3‑bath floor plans with 1,767± SF (per provided plan details)