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$995,000

  • For Sale
  • Active
  • Condo
  • 3 Beds
  • 2 Full Baths
  • 1,902 Sq. Ft.
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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!

Full Property Details for 6403 Gulf of Mexico Blvd #403

General

  • Price: $995,000
  • HOA FEE: $1,993/month
  • HOA FEE FREQ.: Quarterly
  • Taxes: $7,203 (2026)
  • Status: Active
  • Type: Condo
  • Source: Greater_Miami
  • MLS ID: A12033219
  • Updated: 6/23/2026
  • Added to Site: 48 day(s) ago

Interior

  • Interior Features: Volume Ceilings
  • Appliances: Dishwasher, Dryer, Electric Range, Microwave, Refrigerator, Washer
  • Flooring: Tile

Rooms

Bathrooms

  • Total Bathrooms: 2
  • Full Bathrooms: 2
  • Primary Bathroom: Dual Sinks, Separate Tub & Shower, Whirlpool/Spa

Bedrooms

  • Total Bedrooms: 3
  • Bedroom Features: Entry Level, Primary Bath Shower, Primary Bath Tub

Other Rooms

  • Dining Room: Dining/Living Room, Snack Bar/Counter

Additional Information

  • Shared Amenities: Bar, Basketball Court, Barbecue, Boat Dock, Clubhouse-Clubroom, Exercise Room, Storage, Heated Pool, Marina, Pickleball, Pool, Sauna, Spa/Hot Tub, Tennis Court(s)
  • Maint. Includes: All Amenities, Common Area
  • Security/Safety: Smoke Detector, Complex Fenced, Phone Entry, Guard At Site

Exterior

  • Exterior Features: Other, Open Balcony, Tennis Court(s)
  • Deck/Patio: Open Balcony, Wrap Around

Parking

  • Carport Spaces: 2
  • Covered Spaces: 2
  • Parking Features: 2 Or More Spaces, Guest

Location

  • Area: Seawatch Condominium
  • County: Monroe County
  • Subdivision: SEAWATCH CONDOMINIUM
  • Building Name: SEAWATCH

School Information

  • Elementary School: Starlight Cove
  • Middle School: Margate Middle

Community

  • Community Name: Seawatch Condominium
  • Association: Yes
  • Units Assoc/Comm: 48
  • Pets Allowed: Yes

Heating & Cooling

  • Air Conditioning: Yes
  • Cooling Type: Central Air
  • Heating Type: Central

Structural Information

  • Structure Type: Condo 1-4 Stories, Condo
  • Detached/Attached: Attached
  • Construction: Concrete Block Construction
  • Windows: Complete Impact Glass, Complete Panel Shutters/Awnings, Blinds, High Impact Windows, Sliding
  • Entry Floor Number: 4
  • Building Size: 1602
  • Square Feet: 1,902
  • Living Area: 1,902 Sq. Ft.
  • Year Built: 1983

Unit Information

  • Units in Complex: 48

Lot Features

  • Property View: Ocean View, Direct Ocean, Pool Area View, Water View

Water Features

  • Water Front: Yes
  • Water View: Yes
  • Water Front Desc.: Ocean Access, Ocean Front, Seawall

Green Features

  • Energy Efficient: Appliances

Financial Considerations

  • Price Per Sq. Ft.: $523.13
  • Association Fee: $5,978
  • Assoc Fee Freq.: Quarterly
  • Tax Amount: $7,203
  • Tax Year: 2026
  • Terms: All Cash, Conventional, FHA

Disclosures and Reports

  • Legal Description: SEAWATCH AT MARATHON PHASE III A CONDOMINIUM BLDG 6 UNIT 403 OR899-2314/16 OR1005-1715C/T OR1166-319/20 OR1183-212 OR1368-484 OR1743-1777 OR
  • Restrictions: No Restrictions
  • Inclusions: Dock Available, Private Dock, Dock Owned/Included
  • Property ID: 00104133-003100

Listed by Nations Best Realty, Inc.

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Listing agent

— 6403 Gulf of Mexico Blvd #403 —

  • Nations Best Realty, Inc.

305-635-7600

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

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Schools serving 6403 Gulf of Mexico Blvd #403

School District:Monroe County School District, Middle Torch Key, FL
NameGradesDistance
Stanley Switlik Elementary School
3400 Overseas Highway, Marathon, FL 33050
PK-54.3 mi
Marathon School
350 Sombrero Beach Road, Marathon, FL 33050
6-123.6 mi
Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 6403 Gulf of Mexico Blvd #403 Get Price Alerts and Save Property

Date
Details
Price
Change
Source
6/08/2026
Listed
$995,000
148.75%
MLS
10/15/2024
Sold
$400,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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Listed by Nations Best Realty, Inc.

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6403 Gulf Of Mexico Blvd #403, Marathon, FL 33050 (MLS# A12033219) is a Condo property with 3 bedrooms and 2 full bathrooms. 6403 Gulf Of Mexico Blvd #403 is currently listed for $995,000 and was received on June 08, 2026. Want to learn more about 6403 Gulf Of Mexico Blvd #403? Do you have questions about finding other Condo real estate for sale in Marathon? You can browse all Marathon real estate or contact a Coldwell Banker agent to request more information.

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