Recently Viewed Properties
See This Home
Save This Listing
Close

$1,250,000

  • Sold
  • Closed
  • Condo
  • 3 Beds
  • 2 Full Baths
  • 1,902 Sq. Ft.
See This Home
Save This Home
See This Home
Save This Home
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

  • Sold For: $1,250,000
  • HOA FEE: $1,993/month
  • HOA FEE FREQ.: Quarterly
  • Taxes: $7,203 (2026)
  • Status: Closed
  • Type: Condo
  • Source: Greater_Miami
  • MLS ID: A12033219
  • Added to Site: 96 day(s) ago

Interior

  • Interior Features: Volume Ceilings
  • Appliances: Dishwasher, Dryer, Electric Range, Microwave, Refrigerator, Washer
  • Furnishings: Unfurnished
  • 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
  • Potential Use: Secondary

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.: $657.2
  • 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.
Sold by Luxe Properties

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

Get Pre-Approved

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

Date
Details
Price
Change
Source
8/19/2026
Sold
$1,250,000
25.63%
MLS
6/08/2026
Listed
$995,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Listed by Nations Best Realty, Inc.
Sold by Luxe Properties

Similar Properties near 6403 Gulf of Mexico Blvd #403

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

1133 W Ocean Dr, Key Colony Beach, FL 33050 - Photo 1
$1,150,000

1133 W Ocean Dr  #17  Key Colony Beach, FL 33050

  • Condo
  • Active
  • Updated 1 day ago
  • 2
    Beds
  • 3
    Total Baths
  • 1,804
    Sq. Ft.
8401 Gulf of Mexico Blvd, Marathon, FL 33050 - Photo 1
$1,450,000

8401 Gulf of Mexico Blvd  ##401  Marathon, FL 33050

  • Condo
  • Active
  • 2
    Beds
  • 3
    Total Baths
  • 2,004
    Sq. Ft.
Listed by Coldwell Banker Schmitt Real Estate Co., Jesus Parra
[Address not provided], Marathon, FL 33050 - Photo 1
$1,095,000

[Address not provided]  Marathon, FL 33050

  • Condo
  • Active
  • 3
    Beds
  • 3
    Total Baths
  • 1,493
    Sq. Ft.
2000 Coco Plum Dr, Marathon, FL 33050 - Photo 1
$1,089,000

2000 Coco Plum Dr  #APT 1403  Marathon, FL 33050

  • Condo
  • Active
  • 3
    Beds
  • 3
    Total Baths
  • 1,290
    Sq. Ft.
Listed by Lokation Real Estate, Brenda Alexander

Just Listed near 6403 Gulf of Mexico Blvd #403

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

65821 Overseas Hwy, Long Key, FL 33001 - Photo 1 Just Listed
$785,000

65821 Overseas Hwy  Long Key, FL 33001

  • Residential Lots
  • Active
  • Updated 20 hours ago
  • 0.05
    Acres
29466 Enterprise Ave, Big Pine Key, FL 33043 - Photo 1 Just Listed
$1,150,000

29466 Enterprise Ave  Big Pine Key, FL 33043

  • Single Family
  • Active
  • Updated 1 day ago
  • 3
    Beds
  • 2
    Total Baths
  • 1,447
    Sq. Ft.
Listed by Coldwell Banker Schmitt Lower Keys (KW), Patti Nickless
29207 Cypress Dr, Big Pine Key, FL 33043 - Photo 1 Just Listed
$799,000

29207 Cypress Dr  Big Pine Key, FL 33043

  • Single Family
  • Active
  • Updated 3 days ago
  • 3
    Beds
  • 2
    Total Baths
  • 1,152
    Sq. Ft.
Listed by Coldwell Banker Schmitt Lower Keys (KW), Patti Nickless

Price Reduced near 6403 Gulf of Mexico Blvd #403

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

29555 Enterprise Ave, Big Pine Key, FL 33043 - Photo 1 Price Reduced
-$16,000 (-1.55%)
$1,019,000

29555 Enterprise Ave  Big Pine Key, FL 33043

  • Single Family
  • Active
  • Updated 3 days ago
  • 3
    Beds
  • 2
    Total Baths
  • 1,352
    Sq. Ft.
Listed by Coldwell Banker Schmitt Real Estate Co. (KW), Dave Wiley
3746 Park Ave, Big Pine Key, FL 33043 - Photo 1 Price Reduced
-$100,000 (-7.69%)
$1,199,900

3746 Park Ave  Big Pine Key, FL 33043

  • Single Family
  • Active
  • Updated 2 days ago
  • 2
    Beds
  • 2
    Total Baths
  • 1,312
    Sq. Ft.
Listed by Compass Florida - Miami Beach, Cabot Brown
29859 Overseas Hwy, Big Pine Key, FL 33043 - Photo 1 Price Reduced
-$10,000 (-6.45%)
$145,000

29859 Overseas Hwy  #A-3  Big Pine Key, FL 33043

  • Lots/Land
  • Active
  • Updated 1 day ago
Listed by Beycome of Florida, LLC, Steven Koleno
216 Newfound Blvd, Big Pine Key, FL 33043 - Photo 1 Price Reduced
-$50,000 (-5.88%)
$800,000

216 Newfound Blvd  Big Pine Key, FL 33043

  • Single Family
  • Active
  • Updated 2 days ago
  • 3
    Beds
  • 2
    Total Baths
  • 1,360
    Sq. Ft.
Listed by Expert Realty LLC (HQ), Joyce Craul

Recent Sales near 6403 Gulf of Mexico Blvd #403

This is a carousel with tiles that activate property listing cards. Use the previous and next buttons to navigate.

11270 3rd Avenue Gulf, Marathon, FL 33050 - Photo 1 Sold
$1,260,000

11270 3rd Avenue Gulf  Marathon, FL 33050

  • Single Family
  • Closed
  • 3
    Beds
  • 2
    Total Baths
  • 1,424
    Sq. Ft.
Listed by Coldwell Banker Schmitt Real Estate Co., Samuel Davis Williams
Sold by Lifestyle International Realty, Michelle De Leon
11250 3rd Avenue Gulf, Marathon, FL 33050 - Photo 1 Sold
$1,400,000

11250 3rd Avenue Gulf  Marathon, FL 33050

  • Single Family
  • Closed
  • 4
    Beds
  • 3
    Total Baths
  • 1,740
    Sq. Ft.
Listed by Coldwell Banker Schmitt Real Estate Co., Samuel Davis Williams
Sold by Engel & Völkers Marathon, Saara Victoria Staten
11284 3rd Avenue Ocean, Marathon, FL 33050 - Photo 1 Sold
$1,200,000

11284 3rd Avenue Ocean  Marathon, FL 33050

  • Single Family
  • Closed
  • 3
    Beds
  • 2
    Total Baths
  • 1,152
    Sq. Ft.
351 10th St, Key Colony Beach, FL - Photo 1 Sold
$1,340,000

351 10th St  Key Colony Beach, FL

  • Single Family
  • Closed
  • 4
    Beds
  • 3
    Total Baths
  • 1,813
    Sq. Ft.

6403 Gulf Of Mexico Blvd #403, Marathon, FL 33050 (MLS# A12033219) is a Condo property that was sold at $1,250,000 on August 19, 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.