139 Marina Avenue, Key Largo, FL 33037 (MLS# 620421)

139 Marina Avenue, Key Largo, FL 33037

$2,750,000

Property Type: Residential Bedrooms: 4 Baths: 6 Square Footage: 2,485 Lot Size (sq. ft.): 9,375 Status: Active

Current Price: $2,750,000 List Date: 6/26/2026 Last Modified: 7/10/2026

Description

Resort-style living just got better! Turnkey waterfront living in prestigious Port Largo. This rare turnkey property offers a legally permitted duplex with ocean views, exceptional flexibility, and strong income potential in one of Key Largo's most desirable waterfront communities. The residence features two side-by-side townhomes, each with 2 bedrooms and 2.5 bathrooms, for a total of 4 bedrooms, 4 full baths, and 2 half baths. Every bedroom includes a private en-suite bath, providing comfort and privacy for owners and guests. Situated on 75 feet of waterfront, the property boasts a brand-new heated saltwater pool, concrete dock, and 20,000-pound Neptune boat lift. The wide, 80-foot deep-water canal offers quick ocean access, placing you on the first channel to the Atlantic with ocean views and easy access to world-class fishing, diving, and boating. Built entirely of concrete and fully renovated, this home combines durability with modern coastal style. Tastefully updated kitchen, flooring, baths, and more, this home was thoughtfully designed. Located on sought-after Marina Avenue, just steps from the private Port Largo homeowners' park, you'll enjoy beautiful sunrise views from the balconies and the privacy of a nature preserve directly across the street. The ground level includes a spacious storage room, covered parking, and a spacious tiki hut perfect for outdoor living and entertaining. Additional features include all impact windows and doors, an electric gated entrance on both sides, separate electric and water meters for each unit, and furnishings and décor included. Ideal as an investment property, family compound, or waterfront retreat, this unique Port Largo opportunity delivers the best of the Florida Keys lifestyle. Call today. Owner/Agent.

More Information MLS# 620421

Contract Information

Listing Board: Florida Keys Current Price: $2,750,000 Listing Date: 2026-06-26 List Price: $2,750,000

Location, Tax & Legal

City: KEY LARGO Mile Marker: 100 Marathon Neighborhood: N/A Side: Ocean Flood Zone: AE Alternate Key #: 1552356 Parcel #: 00452700000000 Zoning: IS - Improved Subivision District Deed Restrictions: No Legal: Lt 139 Port Largo-Key Largo Pb5-3 Or558-557 Or560-1023 Or795-373 Or825-1828 Or995-248 Or1454-234 Or1598-90 Or1651-2119 O Taxes: 14393.71 Tax Year: 2025 Pub Sewer HkUp: Yes Street #: 139 Street Name: Marina Street Suffix: Avenue Key/Island: Key Largo State/Province: FL Zip Code: 33037 County: Monroe Subdivision: Port Largo (100.0) Area: 27 - Key Largo MM 97-107

General Property Description

Realtor.COM Type: Residential - Single Family Waterfront: Yes Control Depth: 4 Lot Size: 75 X 125 Lot SqFt: 9375 Pool: Yes Lot Sqft Source: Tax Records Total Units: 0 Acres: 0.21 SqFt Source: Property Data Card Rentals Allowed: Yes Min Rental Days: 28 Style: Single Family Year Built: 1980 Living Apx SqFt: 2485 Total Bedrooms: 4 Full Baths: 4 Half Baths: 2 Total Baths: 6

Remarks & Misc

Remarks – Consumer: Resort-style living just got better! Turnkey waterfront living in prestigious Port Largo. This rare turnkey property offers a legally permitted duplex with ocean views, exceptional flexibility, and strong income potential in one of Key Largo's most desirable waterfront communities. The residence features two side-by-side townhomes, each with 2 bedrooms and 2.5 bathrooms, for a total of 4 bedrooms, 4 full baths, and 2 half baths. Every bedroom includes a private en-suite bath, providing comfort and privacy for owners and guests. Situated on 75 feet of waterfront, the property boasts a brand-new heated saltwater pool, concrete dock, and 20,000-pound Neptune boat lift. The wide, 80-foot deep-water canal offers quick ocean access, placing you on the first channel to the Atlantic with ocean views and easy access to world-class fishing, diving, and boating. Built entirely of concrete and fully renovated, this home combines durability with modern coastal style. Tastefully updated kitchen, flooring, baths, and more, this home was thoughtfully designed. Located on sought-after Marina Avenue, just steps from the private Port Largo homeowners' park, you'll enjoy beautiful sunrise views from the balconies and the privacy of a nature preserve directly across the street. The ground level includes a spacious storage room, covered parking, and a spacious tiki hut perfect for outdoor living and entertaining. Additional features include all impact windows and doors, an electric gated entrance on both sides, separate electric and water meters for each unit, and furnishings and décor included. Ideal as an investment property, family compound, or waterfront retreat, this unique Port Largo opportunity delivers the best of the Florida Keys lifestyle. Call today. Owner/Agent.

Association Info

Mandatory Home Owners Asc: No Voluntary Home Owners Asc: Yes 1st Right of Refusal: No Association Fee $: 300 Assoc/Mnt Fee Per: Yearly

Fee Includes

Common Area Mnt: 1 None: 1

Dockage

Dock Length: 75 Dock: Concrete Davits: 1 Seawall: Concrete

Tax Exemptions

Homestead: 1

Appliances

Dishwasher: 1 Disposal: 1 Dryer: 1 Microwave: 1 Range: 1 Refrigerator: 1 Stainless Steel Appliance(s): 1 Washer: 1

Pets

Pets Allowed: 1

Cooling

Central Air: 1

Heating

Central: 1

Waterfront

Canal Front: 1

Waterview

Canal View: 1 Ocean View: 1

Floor

Tile: 1 Vinyl: 1

Neighborhood Feature

Community Boat Ramp: 1

Interior Features

Brazilian Quartzite Countertops: 1 Built-in Cabinets: 1 Drapes/Blinds Incl: 1 Quartz Countertops: 1 Smoke Alarms: 1 Storage: 1

Property Condition

Updated/Remodeled: 1

Specialty Rooms

Guest/Servant Qtrs: Legal Utility Room: 1

Building Style

Above Flood: Yes Stories: 3 Stories

Windows/Doors

Impact Rstnce Doors: 1

Vehicle Storage

Covered Parking: 1 Open Parking: 1

Security

No Security: 1

Construction

CBS: 1

Land Size

Less Than 1/4 Acre: 1

Furnished

Furnished: 1 Negotiable: 1

Terms

Cash: 1 Conventional: 1

Utilities

Elect Separate Meter: 1 FKAA: 1 Municipal Sewer: 1 Water Separate Meter: 1

Porch/Balcony

Open Porch/Balcony: 1

Title

Title Ins - Buyer: 1

Exterior Features

Chickee Hut: 1 Detached Guest Qtrs: 1 Fencing: 1 Hot Tub: 1 Lighting: 1 Privacy Wall/Fence: 1 Storage: 1

Pool Info

In Ground: 1 Salt Water: 1 Heated: Yes Concrete: 1

Roof

Concrete Roof: 1

Status Change Info

Status: Active

Property Features

Fee Includes: Common Area Mnt; None Tax Exemptions: Homestead Waterfront: Canal Front Waterview: Canal View; Ocean View Dockage: Davits Property Condition: Updated/Remodeled Vehicle Storage: Covered Parking; Open Parking Furnished: Furnished; Negotiable Cooling: Central Air Heating: Central Utilities: Elect Separate Meter; FKAA; Municipal Sewer; Water Separate Meter Interior Features: Brazilian Quartzite Countertops; Built-in Cabinets; Drapes/Blinds Incl; Quartz Countertops; Smoke Alarms; Storage Specialty Rooms: Utility Room Appliances: Dishwasher; Disposal; Dryer; Microwave; Range; Refrigerator; Stainless Steel Appliance(s); Washer Exterior Features: Chickee Hut; Detached Guest Qtrs; Fencing; Hot Tub; Lighting; Privacy Wall/Fence; Storage Pool Info: In Ground; Salt Water; Concrete Construction: CBS Floor: Tile; Vinyl Roof: Concrete Roof Pets: Pets Allowed Neighborhood Feature: Community Boat Ramp Security: No Security Land Size: Less Than 1/4 Acre Terms: Cash; Conventional Title: Title Ins - Buyer

Listing Office: American Caribbean Real Estate, Christie's International Real Estate

Last Updated: July - 10 - 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.