815 39Th Street Gulf, Marathon, FL 33050 (MLS# 621438)

815 39Th Street Gulf, Marathon, FL 33050

$2,490,000
Property Type: Residential Bedrooms: 4 Baths: 4 Square Footage: 2,805 Lot Size (sq. ft.): 4,696 Status: Active
Current Price: $2,490,000 List Date: 9/29/2026 Last Modified: 10/03/2026

Overview

Description

Welcome to Emerald Flats, an exclusive gated waterfront community in the heart of Marathon, where sophisticated coastal design and the Florida Keys lifestyle come together effortlessly. Designed & Built by D'Asign Source, this beautifully furnished 4-bedroom, 4-bath residence was completed in 2025 and offers 2,805 square feet of refined living space, thoughtfully designed for both relaxed everyday living and memorable entertaining. High ceilings, abundant natural light, impact-rated windows and doors, and a metal roof complement the home's fresh, modern construction. The interiors are light, airy, and beautifully curated in an elevated coastal palette. At the heart of the home, the designer kitchen pairs quartz countertops, KitchenAid stainless steel appliances, crisp white cabinetry, statement lighting, and an oversized waterfall-edge island with generous seating. A separate bar and entertaining area adds another layer of functionality, while the open-concept layout flows seamlessly ...

Listing Details MLS# 621438

Location, Tax & Legal

Street #
815
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

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
4696
Lot Sqft Source
Property Data Card
Acres
0.11
Living Apx SqFt
2805
SqFt Source
Property Data Card
Total Bedrooms
4
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
Monthly

Dockage

Dock
Wood

More Information

Building Style

Above Flood
Yes
# Stories
2 Stories

Pool Info

Heated
Yes

Financial Status

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

Property Features

Fee Includes: Common Area Mnt Tax Exemptions: None Waterfront: Open Water Waterview: Bay/Gulf View; Open Water View Dockage: Boat Slip Property Condition: New Construction Vehicle Storage: Carport; Off Street Parking 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; Entrance Foyer; 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; Concrete 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: October - 03 - 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.