Discover unparalleled privacy and luxury on SeaWatch Island, a breathtaking 13.2-acre private island in the heart of the Florida Keys. This one-of-a-kind property offers a rare opportunity with building entitlement in hand to build a custom 9,500 sq. ft. estate. In addition to the main residence, the property allows for the construction of a stand-alone garage and pool house, offering ample space for vehicles, recreational amenities, and more.Boating enthusiasts, take note! The island is a true boater's paradise, featuring a protected marina with a concrete bulkhead and multiple deep-water slip configurations. Designed for big boat dockage, the marina accommodates Vikings, sportfishers, catamarans, and other large vessels. Whether you're a passionate yachtsman or a fishing aficionado, this property provides a safe, convenient harbor for your fleet. Inquire for more details on this unparalleled dockage opportunity.Fully equipped with a Development Agreement and Building Right, SeaWatch Island simplifies the process of creating your dream sanctuary. The island's concrete bridge ensures easy access while maintaining the ultimate seclusion.The property offers expansive open water views and immediate access to the Atlantic Ocean and Gulf of Mexico, placing world-class fishing, boating, and diving at your fingertips. For additional convenience, MARATHON International Airport is just a short distance away, ensuring seamless connectivity to the rest of the world.This private oasis is more than a property--it's an exceptional lifestyle. Don't miss the chance to build your legacy on SeaWatch Island, where luxury and tranquility come together like nowhere else.
Lot/land
$9,999,999
Gulf Of Mexico Blvd, Marathon, FL 33050
--beds
--baths
13.2Acres
Unimproved Land
Built in ----
13.2 Acres Lot
$-- Zestimate®
$--/sqft
$-- HOA
What's special
- 208 days
- on Zillow |
- 384 |
- 27 |
Zillow last checked: 7 hours ago
Listing updated: May 29, 2025 at 04:12am
Listed by:
Samuel Davis Williams 305-289-6559,
Coldwell Banker Schmitt Real Estate Co.,
Brian Schmitt 305-289-6482,
Coldwell Banker Schmitt Real Estate Co.
Source: FLKMLS,MLS#: 613238
Originating MLS: Marathon/Lower Keys

Facts & features
Interior
Video & virtual tour
Property
Features
- Exterior features: Boat Slip
- Has view: Yes
- View description: Canal, Harbor/Marina View, Bay, Water
- Water view: Canal,Harbor/Marina View,Bay,Water
- Waterfront features: Gulf Front, Open Water, Canal Front, Waterfront, Water Frontage, Dockage: Boat Slip, Basin
Lot
- Size: 13.2 Acres
- Dimensions: 13.2 acre
- Features: 10 or more Acres, Wooded
- Residential vegetation: Mangrove
Details
- Parcel number: 00104135000000
- Zoning: C-NA
- Zoning description: Conservation Native Area
Utilities & green energy
- Utilities for property: None
Community & HOA
Community
- Features: Airport/Runway, Beach
- Security: Electric Gate
- Subdivision: Seawatch (53.5)
HOA
- Has HOA: No
Location
- Region: Marathon
Financial & listing details
- Annual tax amount: $2,427
- Date on market: 1/20/2025
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