Gulf Of Mexico Boulevard, Marathon, FL 33050

Marathon
Local realty services provided by:Better Homes and Gardens Real Estate Destinations
Gulf Of Mexico Boulevard,Marathon, FL 33050
$9,999,999
Virtual Tour
  • 13.2 Acres
  • Lots / Land
  • Active
Listed by: samuel davis williams, brian schmitt
Office: coldwell banker schmitt real estate co.
MLS#:613238
Source:FL_FKBOR

Price summary

  • Price:$9,999,999

About this home

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...

Contact an agent

contact an agent

Yes, I would like more information. Please use and/or share my information with a BHGRE®  affiliated agent to contact me about my real estate needs. By clicking Send message, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a BHGRE®  affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (CENTURY 21® , Coldwell Banker® , Corcoran® , ERA® , Sotheby's International Realty® ). I acknowledge that I have read and agree to theTerms of useandPrivacy notice

Home facts

  • Listing ID #:613238
  • Added:526 day(s) ago
  • Updated:June 29, 2026 at 02:59 PM

Structure and exterior

  • Lot area:13.2 Acres
  • Lot Features:Mangrove, Water Frontage, Wooded Lot
  • Exterior Features:Boat Slip

Finances and disclosures

  • Price:$9,999,999
  • Tax amount:$2,427

New listings near Gulf Of Mexico Boulevard