818 39Th Street Gulf, Marathon, FL 33050

New Listing

$2,390,000

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Property Type: Residential Bedrooms: 5 Baths: 4 Square Footage: 2,565 Lot Size (sq. ft.): 5,796 Status: Active

Current Price: $2,390,000 List Date: 9/29/2026 Last Modified: 9/29/2026

Overview

Description

Welcome to Emerald Flats, a gated waterfront enclave in the heart of Marathon where refined coastal design meets the Florida Keys lifestyle. Built in 2025, this beautifully furnished 5-bedroom, 4-bath residence offers 2,565 square feet of thoughtfully designed living space, with high ceilings, an open-concept layout, impact-rated windows and doors, and a metal roof. Elevated on concrete pilings, the home is designed for both style and durability while creating generous covered space beneath the residence. Inside, the light-filled living areas showcase a sophisticated coastal aesthetic with seamless flow between the kitchen, dining, and gathering spaces. The kitchen is a true centerpiece, featuring quartz countertops, KitchenAid stainless steel appliances, crisp white cabinetry, a striking waterfall-edge island, and generous seating and prep space. Expansive glass doors open to covered balconies, extending the living space outdoors, while a separate bar and entertainment area adds an ... (Read more)

Listing Details MLS# 621439

Location, Tax & Legal

Street #: 818
Street Name: 39Th
Street Suffix: Street Gulf
Key/Island: Marathon
State/Province: FL
Zip Code: 33050
County: Monroe
Subdivision: Marathon Beach (49.0)
Area: 13 - 7 Mile Bridge to Sombrero Bch Rd E & W
City: MARATHON
Off Shore Island: No
Mile Marker: 49
Marathon Neighborhood: Old Town East (25th to Sombrero)
Side: Bay/Gulf
Flood Zone: AE-9
Alternate Key #: 9104906
Parcel #: 00337391-001800
Zoning: RH - Residential High
Deed Restrictions: Unknown
Legal: UNIT 18 EMERALD FLATS SUB PB2-21 PORTION OF BLOCK 5 RESUBDIVISION OF MARTHON BEACH
Taxes: 2436.11
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 - Single Family
Style: Single Family
Waterfront: Yes
Control Depth: 4
Pool: Yes
Year Built: 2025
Lot SqFt: 5796
Lot Sqft Source: Property Data Card
Acres: 0.13
Living Apx SqFt: 2565
SqFt Source: Property Data Card
Total Bedrooms: 5
Full Baths: 4
Total Baths: 4
Rentals Allowed: Yes
Min Rental Days: 7

Association Info

Mandatory Home Owners Asc: Yes
1st Right of Refusal: No
Association Fee $: 550
Assoc/Mnt Fee Per: Quarterly

Building Style

Above Flood: Yes
Stories: 2 Stories

More Information

Pool Info

Heated: Yes
In Ground: Yes

Financial Status

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

Remarks & Misc

Remarks – Consumer: Welcome to Emerald Flats, a gated waterfront enclave in the heart of Marathon where refined coastal design meets the Florida Keys lifestyle. Built in 2025, this beautifully furnished 5-bedroom, 4-bath residence offers 2,565 square feet of thoughtfully designed living space, with high ceilings, an open-concept layout, impact-rated windows and doors, and a metal roof. Elevated on concrete pilings, the home is designed for both style and durability while creating generous covered space beneath the residence. Inside, the light-filled living areas showcase a sophisticated coastal aesthetic with seamless flow between the kitchen, dining, and gathering spaces. The kitchen is a true centerpiece, featuring quartz countertops, KitchenAid stainless steel appliances, crisp white cabinetry, a striking waterfall-edge island, and generous seating and prep space. Expansive glass doors open to covered balconies, extending the living space outdoors, while a separate bar and entertainment area adds another polished touch for hosting family and friends. Outdoor living is equally impressive, with a private heated pool, tropical landscaping, expansive paver areas, and multiple covered spaces ideal for relaxing or entertaining. Boaters will appreciate the included Boat Slip #30, reported to measure approximately 45 feet long by 14.75 feet wide, offering convenient private docking within the Emerald Flats Marina community. The slip is separately identified by Monroe County as a marina condominium boat-slip parcel. Fully furnished and move-in ready, this home offers an exceptional combination of luxury, boating access, modern construction, and effortless island living in one of Marathon's desirable waterfront communities.
Directions: Us 1 to 39th ST Gulf

Fee Includes

Common Area Mnt: Yes

Dockage

Boat Slip: Yes

Tax Exemptions

None: Yes

Appliances

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

Pets

Pets Allowed: Yes

Cooling

Ceiling Fans(s): Yes
Central Air: Yes

Waterfront

None: Yes

Waterview

Bay/Gulf View: Yes

Floor

Vinyl: Yes

Neighborhood Feature

Airstrip: Yes
Beach: Yes
Bike Paths: Yes

Interior Features

Bar: Yes
Built-in Cabinets: Yes
Drapes/Blinds Incl: Yes
Pantry: Yes
Quartz Countertops: Yes
Smoke Alarms: Yes
Walk-in Closet(s): Yes

Property Condition

New Construction: Yes

Specialty Rooms

Laundry Room: Yes

Windows/Doors

Impact Rstnce Window: Yes

Vehicle Storage

Carport: Yes

Security

No Security: Yes

Construction

CBS: Yes

Land Size

Less Than 1/4 Acre: Yes

Furnished

Furnished: Yes

Utilities

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

Porch/Balcony

Open Porch/Balcony: Yes

Pre-Wired

Cable: Yes
Cat 5: Yes

Roof

Metal Roof: Yes

Property Features

Fee Includes: Common Area Mnt Tax Exemptions: None Waterfront: None Waterview: Bay/Gulf View Dockage: Boat Slip Property Condition: New Construction Vehicle Storage: Carport Furnished: Furnished Cooling: Ceiling Fans(s); Central Air Utilities: Elect Separate Meter; FKAA; Municipal Sewer; Water Separate Meter Interior Features: Bar; Built-in Cabinets; Drapes/Blinds Incl; Pantry; Quartz Countertops; Smoke Alarms; Walk-in Closet(s) Pre-Wired: Cable; Cat 5 Specialty Rooms: Laundry Room Appliances: Dishwasher; Disposal; Dryer; Microwave; Oven; Range; Refrigerator; Stainless Steel Appliance(s); Washer Pool Info: In Ground Construction: CBS Floor: Vinyl Roof: Metal Roof Pets: Pets Allowed Neighborhood Feature: Airstrip; Beach; Bike Paths Security: No Security Land Size: Less Than 1/4 Acre

Listing Office: Coldwell Banker Schmitt Real Estate Co.

Last Updated: September - 29 - 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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