Oceanfront Development Land with Dock
For Sale
Contact for pricing
57478 Overseas Highway, Marathon, FL 33050
Oceanfront land with extensive frontage and conditional approval for a duplex residential project, plus riparian rights.
Property SizeContact for details
Lot Size5.90 Acres
Days on Market67
Property Features for 57478 Overseas Highway
General Information
Standard status
Active
Lot size
5.90 Acres
Property subtype
Land
Zoning
MU - Mixed Use / RL - Residential Low
Investment Type
Redevelopment
Additional Details
Utilities to Site
Yes
Water Rights
Yes
Multifamily Units
18
Building Details
Year Built
1978
Stories
1
Units
1
Listing Agency:
Compass Florida, LLC.
(954) 942-0917
Listed By:
Iliana Abella · License #0519307
Source:
Crexi
Added: Jun 17
Changed: Aug 8
Last Checked: Jul 23 at 1:14PM
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.
Investment Insights
Based on property information with market context.
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.
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.
Key Highlights
- 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)
Property Analytics
Property Profile
Current Use
Lease Details
18
Residential units
Yes
Utilities to site
Yes
Water rights
Location Intelligence
Trade Area within ½ mile
26
Businesses Nearby
Explore this area
Business Placement
Demographics for 33050, FL
10,479
Population
7,314
Households
1.4
Avg Household Size
50
Median Age
34%
College-Educated
90%
High-School Grad
9.1 sq mi
ZIP Area
1,152
Density / Sq Mi
$83,243
Median Household Income
$40,006
Median Earnings
$1,611
Median Rent
$705,600
Median Home Value
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Frequently Asked Questions
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)
