DockOnly™

The only MLS search built exclusively for boaters. Find your dock home.

Company

  • About
  • Contact
  • Blog

Search

  • By City
  • By County
  • Dockominiums

Services

  • Marine Services
  • Dock Builders
  • Find Contractors

For Agents

  • Become a Partner
  • Referral Program
  • Featured Listings

Legal

  • Privacy Policy
  • Terms of Use
  • MLS Compliance

© 2026 DockOnly™. All rights reserved.

DockOnly™ and Dock Score™ are trademarks of Blue Mar Real Estate Group Inc.

Blue Mar Real Estate Group Inc., Licensed Florida Real Estate Broker

Blue Mar Real Estate Group Inc.

Licensed Florida Real Estate Broker · DBPR License CQ1018554

4000 Ponce De Leon Blvd, Suite 470, Coral Gables, FL 33146

[email protected]

Listing data is provided by participating Multiple Listing Services and is deemed reliable but not guaranteed. Each listing's MLS source and its required disclosures appear with that listing. Dock Score™ is a DockOnly.com rating and is not provided by or affiliated with any MLS or listing broker. NOAA chart data is public domain and for reference only, not for navigation. Full MLS Compliance

DockOnly and Blue Mar Real Estate Group are committed to ensuring digital accessibility for individuals with disabilities. We are continuously working to improve the accessibility of our web experience for everyone, and we welcome feedback and accommodation requests. If you wish to report an issue or seek an accommodation, please let us know.

Equal Housing OpportunityEqual Housing Opportunity

This website complies with the Fair Housing Act. We do not discriminate on the basis of race, color, religion, sex, national origin, familial status, or disability.

DockOnly™Blue Mar Real Estate Group Inc., Licensed Florida Real Estate BrokerBlue MarREAL ESTATE GROUPBlue Mar Real Estate Group Inc., Licensed Florida Real Estate Broker
SearchMarketsDockominiums
SearchMarketsDockominiumsSaved
Real Estate Agents
Home
SearchSaved
Back to Search
6403 Gulf Of Mexico Blvd 403 photo 1
6403 Gulf Of Mexico Blvd 403 photo 2
6403 Gulf Of Mexico Blvd 403 photo 3
6403 Gulf Of Mexico Blvd 403 photo 4
6403 Gulf Of Mexico Blvd 403 photo 5
6403 Gulf Of Mexico Blvd 403 photo 6
6403 Gulf Of Mexico Blvd 403 photo 7
6403 Gulf Of Mexico Blvd 403 photo 8
6403 Gulf Of Mexico Blvd 403 photo 9
6403 Gulf Of Mexico Blvd 403 photo 10
6403 Gulf Of Mexico Blvd 403 photo 11
6403 Gulf Of Mexico Blvd 403 photo 12
6403 Gulf Of Mexico Blvd 403 photo 13
6403 Gulf Of Mexico Blvd 403 photo 14
6403 Gulf Of Mexico Blvd 403 photo 15
6403 Gulf Of Mexico Blvd 403 photo 16
6403 Gulf Of Mexico Blvd 403 photo 17
6403 Gulf Of Mexico Blvd 403 photo 18
6403 Gulf Of Mexico Blvd 403 photo 19
6403 Gulf Of Mexico Blvd 403 photo 20
6403 Gulf Of Mexico Blvd 403 photo 21
6403 Gulf Of Mexico Blvd 403 photo 22
6403 Gulf Of Mexico Blvd 403 photo 23
6403 Gulf Of Mexico Blvd 403 photo 24
6403 Gulf Of Mexico Blvd 403 photo 25
1 / 25
6403 Gulf Of Mexico Blvd 403
25 photos
6403 Gulf Of Mexico Blvd 403 photo 2
6403 Gulf Of Mexico Blvd 403 photo 3
6403 Gulf Of Mexico Blvd 403 photo 4
6403 Gulf Of Mexico Blvd 403 photo 5
+20

6403 Gulf Of Mexico Blvd 403

Marathon, FL, 33050

Active

$995,000

6403 Gulf Of Mexico Blvd 403

Marathon, FL, 33050

Active

$995,000

3

Bedrooms

2

Bathrooms

1,902 sqft

Living Area

1983

Year Built

$5,978

HOA / Quarterly

11

Days on Market

Dock & Water AccessMLS

Ocean AccessOcean Front

Data sources: SFWMD AHED waterway polygons · FHWA National Bridge Inventory 2024 · Not provided by the MLS or listing broker.

Description

Welcome to your Marathon lifestyle package, a fully remodeled 3-bedroom, 2-bath Penthouse offering 1,902 SQFT of luxury coastal living. Rare opportunity includes a 24' boat with marina access w/lifts permitted, combining a move-in-ready residence w/boating lifestyle buyers dream of in the Florida Keys. Designed for comfort and entertaining, this top-floor residence features Versace & marble tile finishes, quartz countertops, New Kitchen & Stainless Steel appliances, New impact windows, 9-ft ceilings, wet bar, private parking, open-concept layout, and wraparound balcony, perfect for tropical breezes, morning coffee, and sunset cocktails. Spacious Primary suite offers balcony access, dual closets & spa-inspired bath w/soaking tub, glass-enclosed shower, makeup station & designer finishes. Enjoy direct marina access & your included 24' boat for fishing, cruising, island hopping & waterfront dining in the Keys. Amenities include covered warehouse storage for your water toys, Lagoon-style pool, jacuzzi, tennis & basketball courts, fitness center, and gated tropical grounds. All located in the heart of Marathon, minutes from Sombrero Beach, Coco Plum Beach, Marathon Airport, Turtle Hospital, Old Seven Mile Bridge & Best waterfront restaurants! World-class boating, fishing, snorkeling & breathtaking sunsets are right outside your door. More than just a Penthouse, this is your private escape, boating base, weekend retreat, future vacation home, and private piece of paradise!

Schedule a Showing

See the property and tour the dock. A licensed waterfront specialist will arrange your private showing.

Select a date

Location

Marathon, FL, 33050

No price history available for this property.

Displayed by Blue Mar Real Estate Group Inc., Licensed Florida Real Estate Broker (DBPR CQ1018554) · [email protected]

Listing courtesy of Nations Best Realty, Inc. via MIAMI REALTORS®

Last checked: June 19, 2026

Listing updated: June 19, 2026

© 2026 Miami Association of REALTORS®, Inc. All rights reserved. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of the Miami Association of REALTORS®. Information is deemed reliable but not guaranteed. All properties are subject to prior sale, change, or withdrawal.

IDX information is provided exclusively for consumers' personal, non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Nearest Bridge Clearances

Florida Keys, critical for tall/large vessels

No bridge data available for this location.
FEMA Flood Zone AE
BFE: 10ft

Special Flood Hazard Area

View FEMA Flood Map →
Loading nearby marinas…
Loading nearby sandbars…

Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$199,000 down

%
Principal & Interest$5,163/mo
Property Tax (est. ~1.2%, varies by county)$995/mo
Home Insurance (est.)$250/mo
HOA Fees$1,993/mo
Total Monthly Payment$8,401
Loan Amount: $796,000Rate: 6.75%
Get Pre-Qualified

Estimated payments only. Actual rates and terms may vary.

Similar Listings

500 Burton Drive 5308$719,999

500 Burton Drive 5308

Key Largo, FL

2 2 841 sqft

Courtesy of Homecoin.com via Florida Keys MLS

104350 Overseas Highway A-402 & Boat Slip #7$769,000

104350 Overseas Highway A-402 & Boat Slip #7

Key Largo, FL

2 2 947 sqft

Courtesy of Coldwell Banker Schmitt Key Largo via Florida Keys MLS

4402 Marina Villa Drive$1,075,000

4402 Marina Villa Drive

Duck Key, FL

3 2 1,328 sqft

Courtesy of Florida Keys Realty Group LLC via Florida Keys MLS

6204 Gulf Of Mexico Boulevard 204$1,095,000

6204 Gulf Of Mexico Boulevard 204

Marathon, FL

3 2 1,602 sqft

Courtesy of Coldwell Banker Schmitt Real Estate Co. via Florida Keys MLS

3841 N Roosevelt Boulevard 121$799,000

3841 N Roosevelt Boulevard 121

Key West, FL

1 2 814 sqft

Courtesy of Ocean Sotheby's International Realty via Florida Keys MLS

104500 Overseas Hwy A302$819,000

104500 Overseas Hwy A302

Key Largo, FL

2 2 1,282 sqft

Courtesy of Barbara Eads Realty Inc. via MIAMI REALTORS®

Swipe or use arrows to see more
$995,000Tour the dockSchedule a Showing