8403 Gulf Of Mexico Boulevard # 403, Marathon, FL 33050

$1,575,000

Virtual Tour

https://www.zillow.com/view-imx/2a49d0c6-8654-48cd-ae5c-4da9f3563823?setAttribution=mls&wl=true&initialViewType=pano&utm_source=dashboard

Property Type: Residential Bedrooms: 2 Baths: 2 Square Footage: 2,004 Status: Closed

Current Price: $1,575,000 List Date: 3/22/2026 Last Modified: 7/28/2026

Overview

Description

Welcome to 8403 Gulf of Mexico Blvd Marathon, Florida in exclusive Seawatch Condominiums. This one-of-a-kind, customized penthouse condo boasts only the best views and comes with a 40' boat slip equipped with a 30k lb. lift. This residence was renovated down to the concrete, offering unparalleled luxury and sophistication. Just stepping into the unit you will be captivated as the expansive windows bring sweeping views of both the Atlantic and the Gulf into the space. Custom touches to the living space include: custom wood paneling lining the open living space, a unique wood paneled office/lounge, hard wired Lutron blinds, custom cherry cabinetry, top-of-the-line stainless steel appliances, Sonos speakers throughout, river reclaimed Dade county pine flooring throughout, impeccable stone work in the bathrooms and all within an spacious open floor style living area. Seawatch offers an array of amenities such as: securely gated entrance, a fully-equipped gym, a large on-site storage b ... (Read more)

Listing Details MLS# 619154

Location, Tax & Legal

Street #: 8403
Street Name: Gulf Of Mexico
Street Suffix: Boulevard
Key/Island: Marathon
State/Province: FL
Zip Code: 33050
County: Monroe
Subdivision: Seawatch (53.5)
Area: 16 - Sombrero Bch Rd to Vaca Cut - Oceanside
Unit #: # 403
City: MARATHON
Off Shore Island: No
Mile Marker: 53
Marathon Neighborhood: Marathon East - Gulf (Airport to Vaca)
Side: Bay/Gulf
Alternate Key #: 8628706
Parcel #: 00104131003100
Zoning: RM - Residential Medium
Deed Restrictions: Unknown
Legal: Unit 403 Seawatch At Marathon-Phase I A Condominium Bldg 8 Or851-1004/05 Or1005-1675C/T Or1173-2137 Or1239-719 Or1644-73
Taxes: 8493.22
Tax Year: 2025
Pub Sewer HkUp: Yes

Contract Information

Listing Board: Marathon/Lower Keys
As is Rght to Inspct: Yes
Potential Short Sale: No
Bank Owned: No
Species List: No

General Property Description

Realtor.COM Type: Residential - Condo/Townhouse
Style: Condo
Waterfront: Yes
Control Depth: 4
Unit/Complex: Unit
Pool: Yes
Year Built: 1983
Total Units: 48
Lot Sqft Source: Property Data Card
Living Apx SqFt: 2004
SqFt Source: Property Data Card
Total Bedrooms: 2
Full Baths: 2
Total Baths: 2
Floor Number: 4
Rentals Allowed: With Restrictions
Min Rental Days: 30
Lot SqFt: 0
Acres: 0

Status Change Info

Under Contract Date: 2026-06-30
Sold Date: 2026-07-28

Association Info

Mandatory Home Owners Asc: Yes
Condo Doc's: Yes
1st Right of Refusal: Yes
Association Fee $: 6464.37
Assoc/Mnt Fee Per: Quarterly

Dockage

Dock Length: 40
Dock: Concrete
Seawall: Concrete
Boat Lift: Yes

More Information

Building Style

Above Flood: Yes
Stories: 4 Stories

Vehicle Storage

Car(s): Yes
Covered Parking: Yes
Guest Parking: Yes

Pool Info

Heated: Yes
In Ground: Yes
Concrete: Yes

Financial Status

Auction: No
Bank Owned: No
Potential Short Sale: No
Standard Sale: Yes

Remarks & Misc

Remarks – Consumer: Welcome to 8403 Gulf of Mexico Blvd Marathon, Florida in exclusive Seawatch Condominiums. This one-of-a-kind, customized penthouse condo boasts only the best views and comes with a 40' boat slip equipped with a 30k lb. lift. This residence was renovated down to the concrete, offering unparalleled luxury and sophistication. Just stepping into the unit you will be captivated as the expansive windows bring sweeping views of both the Atlantic and the Gulf into the space. Custom touches to the living space include: custom wood paneling lining the open living space, a unique wood paneled office/lounge, hard wired Lutron blinds, custom cherry cabinetry, top-of-the-line stainless steel appliances, Sonos speakers throughout, river reclaimed Dade county pine flooring throughout, impeccable stone work in the bathrooms and all within an spacious open floor style living area. Seawatch offers an array of amenities such as: securely gated entrance, a fully-equipped gym, a large on-site storage barn, ample space to store your boat and RV, newly renovated resort sized pool, spa and cabana, club house, tennis and pickle ball courts, lush tropical landscaping and gardens and marina offering protective dockage.
Directions: Turn on to 117th Street by he Aquarium Slight right hand turn to Gulf of Mexico Blvd. Follow signs to Building 8. If you don't have a code for the gate, we will have to meet you to get you in.

Fee Includes

Bldg Exterior Mnt: Yes
Building Insurance: Yes
Common Area Mnt: Yes
Exterminating: Yes
Security: Yes

Tax Exemptions

None: Yes

Appliances

Dishwasher: Yes
Dryer: Yes
Microwave: Yes
Oven: Yes
Range: Yes
Refrigerator: Yes
Stainless Steel Appliance(s): Yes
Washer: Yes
Wine Cooler: Yes

Pets

Pets Allowed: Yes

Cooling

Ceiling Fans(s): Yes
Central Air: Yes

Heating

Central: Yes

Waterfront

Bay Front: Yes
Gulf Front: Yes
Open Water: Yes

Waterview

Bay/Gulf View: Yes
Ocean View: Yes
Open Water View: Yes

Floor

Marble: Yes
Wood: Yes

Neighborhood Feature

Clubhouse: Yes
Community Pool: Yes
Manager on Premises: Yes
Tennis Courts: Yes

Interior Features

Built-in Cabinets: Yes
Drapes/Blinds Incl: Yes
Elevator: Yes
Quartz Countertops: Yes
Split Bedroom: Yes
Storage: Yes
Walk-in Closet(s): Yes
Window Treatments: Yes

Property Condition

Updated/Remodeled: Yes

Windows/Doors

Impact Rstnce Window: Yes

Security

Electric Gate: Yes
Secured Building: Yes

Construction

CBS: Yes

Land Size

10 or more Acres: Yes

Furnished

Negotiable: Yes

Terms

Cash: Yes
Conventional: Yes

Utilities

Cable Available: Yes
Elect Separate Meter: Yes
FKAA: Yes
Municipal Sewer: Yes

Porch/Balcony

No Porch/Balcony: Yes

Title

Title Ins - Buyer: Yes

Exterior Features

Bar: Yes
Fencing: Yes
Storage: Yes
Tennis Court(s): Yes

Pre-Wired

Cable: Yes

Roof

Concrete Roof: Yes

Property Features

Fee Includes: Bldg Exterior Mnt; Building Insurance; Common Area Mnt; Exterminating; Security Tax Exemptions: None Waterfront: Bay Front; Gulf Front; Open Water Waterview: Bay/Gulf View; Ocean View; Open Water View Dockage: Boat Lift Property Condition: Updated/Remodeled Vehicle Storage: Covered Parking; Guest Parking Furnished: Negotiable Cooling: Ceiling Fans(s); Central Air Heating: Central Utilities: Cable Available; Elect Separate Meter; FKAA; Municipal Sewer Interior Features: Built-in Cabinets; Drapes/Blinds Incl; Elevator; Quartz Countertops; Split Bedroom; Storage; Walk-in Closet(s); Window Treatments Pre-Wired: Cable Appliances: Dishwasher; Dryer; Microwave; Oven; Range; Refrigerator; Stainless Steel Appliance(s); Washer; Wine Cooler Exterior Features: Bar; Fencing; Storage; Tennis Court(s) Pool Info: In Ground; Concrete Construction: CBS Floor: Marble; Wood Roof: Concrete Roof Pets: Pets Allowed Neighborhood Feature: Clubhouse; Community Pool; Manager on Premises; Tennis Courts Security: Electric Gate; Secured Building Land Size: 10 or more Acres Terms: Cash; Conventional Title: Title Ins - Buyer

Listing Office: Berkshire Hathaway HomeServices Keys Real Estate

Last Updated: July - 28 - 2026

The data relating to real estate for sale on this web site comes in part from the Florida Keys MLS, Inc. Information provided is deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. The information being provided is for consumers’ personal, non-commeral use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. IDX data is deemed reliable but is not guaranteed accurate by the MLS.

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