Welcome to Emerald Flats, a gated waterfront enclave in the heart of Marathon where refined coastal design meets the Florida Keys lifestyle. Designed & Built by D'Asign Source, this beautifully furnished 5-bedroom, 4-bath residence was completed in 2025 and 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.
New construction
$2,390,000
818 39th St, Marathon, FL 33050
5beds
2,565sqft
Single Family Residence
Built in 2025
5,662 Square Feet Lot
$-- Zestimate®
$932/sqft
$183/mo HOA
What's special
Private heated poolStriking waterfall-edge islandMetal roofQuartz countertopsHigh ceilingsSophisticated coastal aestheticOpen-concept layout
- 4 days
- 397
- 16
Likely to sell faster than
Zillow last checked:
Listing updated:
Listed by:
Samuel Davis Williams 305-289-6559,
Coldwell Banker Schmitt Real Estate Co.,
Lisa Silva 305-481-5077,
Coldwell Banker Schmitt RE Co.
Source: FLKMLS,MLS#: 621439
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 5
- Bathrooms: 4
- Full bathrooms: 4
Cooling
- Central Air, Ceiling Fans(s)
Appliances
- Included: Washer, Dryer, Dishwasher, Refrigerator, Range, Oven, Microwave, Disposal, Stainless Steel Appliance(s)
- Laundry: Laundry Room
Features
- Built-in Features, Walk-in Closet(s), Bar, Quartz Countertops
- Flooring: Vinyl
- Furnished: Yes
Interior area
- Total structure area: 2,565
- Total interior livable area: 2,565 sqft
Property
Features
- Patio & porch: Open Porch/Balcony
- Has private pool: Yes
- Pool features: In Ground
Lot
- Size: 5,662 Square Feet
Details
- Parcel number: 00337391001800
- Zoning: RH - Residential High
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Materials
- CBS
Condition
- New Construction
- New construction: Yes
- Year built: 2025
Utilities & green energy
- Electric: Cat 5
- Utilities for property: Water Separate Meter, Elect Separate Meter
Community & HOA
Community
- Features: Beach, Bike Paths
- Security: No Security
- Subdivision: Marathon Beach (49.0)
HOA
- Has HOA: Yes
- Services included: Common Area Mnt
- HOA fee: $550 quarterly
Location
- Region: Marathon
Financial & listing details
- Price per square foot: $932/sqft
- Tax assessed value: $399,591
- Annual tax amount: $2,436
- Date on market: 9/29/2026
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 9/29/2026 | Listed for sale | $2,390,000-1.4%$932/sqft |
Source: | ||
| 10/17/2025 | Listed for sale | $2,425,000$945/sqft |
Source: | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $2,436 +28% | $207,064 +10% |
| 2024 | $1,902 +3.2% | $188,240 +10% |
| 2023 | $1,844 +172.1% | $171,127 +137.1% |
| 2022 | $678 | $72,160 |
Find assessor info on the county website
Monthly payment
Est. payment



