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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

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8401 Gulf Of Mexico Boulevard #401 photo 1
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+20

8401 Gulf Of Mexico Boulevard #401

Marathon, FL, 33050

Active

$1,525,000

8401 Gulf Of Mexico Boulevard #401

Marathon, FL, 33050

Active

$1,525,000

2

Bedrooms

3

Bathrooms

2,004 sqft

Living Area

1983

Year Built

$1,525,000Tour the dockSchedule a Showing
Navigation note: Navigation routes show the shortest mapped path to open water. A vessel taller than the binding bridge clearance may still reach open water via a longer alternate route that we don't currently map. Verify navigability with a local captain or surveyor before relying on it.

$6,657

HOA / Quarterly

18

Days on Market

Dock Score™

DockOnly
59
Fair

What shaped this score

✓Ocean Access
✓Dock present
✓Bridge-free to bay & ocean
✓Premium waterfront location

DockOnly.com rating, not provided by the MLS or listing broker.

Dock & Water AccessMLS

Bay FrontGulf FrontCanal FrontOpen Water

AI Aerial Imagery Detection

Dock DetectedSeawall Detected

Detected by AI from open-source aerial mapping imagery and may not reflect current conditions. This information was not provided by the MLS or listing broker. Always verify dock infrastructure with the listing agent.

Navigation RouteDockOnly

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

Description

Introducing 8401 Gulf of Mexico Blvd #8401, an exceptional waterfront penthouse with Boat Slip #23, located in the prestigious Seawatch community of Marathon, Florida. Renovated in 2023 and meticulously maintained since, this top floor residence offers an impressive combination of comfort, style, boating access and one of the most captivating open water views in the community. From the moment you step inside, expansive impact windows frame breathtaking Gulf views and fill the living space with natural light. The spacious layout features two generous suites, an open living and dining area and a clean coastal feel designed for relaxed Florida Keys living. The 2023 renovation included thoughtful updates to the kitchen, bathrooms, flooring and interior finishes. The kitchen offers updated cabinetry and appliances, while the remodeled bathrooms feature updated tile and showers, creating a move in ready residence that has been carefully improved and maintained. Seawatch is known for one of the most impressive amenity packages in the Middle Keys, including a gated entrance, marina, resort style pool and spa, cabanas, fitness center, clubhouse/event room, tennis & pickleball courts, elevators, tropical landscaping, natural habitat areas, lake and generous open space rarely found in a condo community. Complete with protected dockage and a premier waterfront setting, this Seawatch penthouse is ideal as a full time residence, seasonal retreat, or low maintenance Florida Keys getaway. Enjoy boating, views, privacy and resort style amenities all in one of Marathon's most desirable waterfront communities.

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 Coldwell Banker Schmitt Real Estate Co. via Florida Keys MLS

Last updated: 7/6/2026

© 2026 Florida Keys Board 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 (IDX) program of the Florida Keys Board of REALTORS®. Information is deemed reliable but not guaranteed and should be independently verified. 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.

Dock Score™

DockOnly
59
Fair

What shaped this score

✓Ocean Access
✓Dock present
✓Bridge-free to bay & ocean
✓Premium waterfront location

DockOnly.com rating, not provided by the MLS or listing broker.

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 →
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Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$305,000 down

%
Principal & Interest$7,913/mo
Property Tax (est. ~1.2%, varies by county)$1,525/mo
Home Insurance (est.)$250/mo
HOA Fees$2,219/mo
Total Monthly Payment$11,907
Loan Amount: $1,220,000Rate: 6.75%
Get Pre-Qualified

Estimated payments only. Actual rates and terms may vary.

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