Kirill Shapkin advises luxury buyers, sellers, and relocation clients — including international clients — who want a clear strategy and fast execution.

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Kirill Shapkin advises luxury buyers, sellers, and relocation clients — including international clients — who want a clear strategy and fast execution.

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ActiveResidentialCondominium

6403 Gulf Of Mexico Blvd # 403, Marathon FL 33050,Marathon,Monroe County,Residential

6403 Gulf Of Mexico Blvd # 403, Marathon FL 33050

MLS# A1203321922 days on marketUpdated June 30, 2026 at 06:49pm

$ 523 / sqft

$ 995,000

Overview

UpdatedJune 30, 2026 at 06:49pm
MLS #A12033219
Bedrooms3
Bathrooms2
Size1,902 ft²
Year Built1983

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!

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Interior

  • Bedrooms Total3
  • Entry Level4
  • FlooringTile
  • HeatingCentral
  • HeatingYes
  • Interior FeaturesVolume Ceilings
  • Living Area1,902
  • Living Area UnitsSquare Feet
  • Rooms Total0
  • Security FeaturesSmoke Detector, Complex Fenced, Phone Entry, Guard At Site
  • Window FeaturesComplete Impact Glass, Complete Panel Shutters/Awnings, Blinds, High Impact Windows, Sliding

Exterior

  • Exterior FeaturesOther, Open Balcony, Tennis Court(s)
  • Garage Spaces0
  • Lot Size Square Feet0
  • Lot Size UnitsSquare Feet
  • Parking Features2 Or More Spaces, Guest
  • Patio And Porch FeaturesOpen Balcony, Wrap Around
  • ViewOcean View, Direct Ocean, Pool Area View, Water View
  • ViewYes
  • Waterfront FeaturesOcean Access, Ocean Front, Seawall

Structure

  • Property AttachedYes
  • Stories Total4
  • Structure TypeCondo 1-4 Stories, Condo
  • Year Built1983
  • Year Built DetailsEffective Year Built

Utilities

  • Green Energy EfficientAppliances

Financial

  • Other Expense0
  • Parcel Number00104133-003100
  • Pets AllowedDogs OK
  • Tax Annual Amount7,203
  • Tax Legal DescriptionSEAWATCH 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
  • Tax Year2026

Schools

  • Elementary SchoolStarlight Cove
  • Middle Or Junior SchoolMargate Middle

Location

  • MLS Area MajorSeawatch Condominium
  • Number Of Units In Community48
  • Postal Code33050
  • Postal Code Plus43042
  • Street NameGulf Of Mexico Blvd
  • Street Number6403
  • Street Number Numeric6,403
  • Subdivision NameSEAWATCH CONDOMINIUM
  • Unit Number403
  • Unparsed Address6403 Gulf Of Mexico Blvd # 403, Marathon FL 33050

Features & Amenities

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Meet your agent

YR

Yusilet Rodriguez

Listing Agent · Nations Best Realty, Inc.

BrokerageNations Best Realty, Inc.
Agent MLS IDYUSILET
Office MLS IDNTSB01

Get in touch

+1 786 795 6008Send a message

Office · 305-635-7600

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Listing courtesy of Nations Best Realty, Inc.

MLS# A12033219 · Listing agent Yusilet Rodriguez · Data last updated June 30, 2026 at 06:49pm

YRYusilet Rodriguez
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