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57478 Overseas Hwy

Marathon, FL 33050

Land & lotsMLS 11630819

Price

$7,000,000

Acreage

6 acres

Price per acre

$1,166,667

Status

For sale

Listed

Jan 11, 2026

Facts below are what the listing agent stated. LandAuthority does not verify them, and a fact that is missing is shown as unknown rather than left blank. Unknown never means no.

Property facts

Price
$7,000,000
Status
For sale
Property type
Land & lots
Lot size
6 acres
County
Monroe County
Annual taxes (2025)
$4,222
MLS #
11630819

Land details

Water source
Public (WaterSource)

Features

Water

Public (Water Source)

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.

Supplied by the listing agent and shown without edit.

Check these yourself before you buy

None of these can be settled by a listing description. Each one names who can answer it.

  • Boundaries and cornersAsk: a licensed surveyor, not a listing map or a phone app
  • Legal accessAsk: a title company, plus the county recorder for recorded easements
  • Zoning and permitted usesAsk: the county planning department, in writing
  • Building permission and septic feasibilityAsk: county building and environmental health
  • Utilities and the cost to connectAsk: the serving electric and water utilities, by parcel
  • Water rights and well permitsAsk: the state water authority
  • Flood and wetland exposureAsk: FEMA flood maps, and a wetlands delineation where relevant
  • Easements and encumbrancesAsk: a full title report, not a preliminary summary
  • Taxes and assessmentsAsk: the county assessor and treasurer
  • FinancingAsk: a lender that actually writes raw land loans

General information, not legal, engineering or financial advice.

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