Beautifully renovated and fully turnkey duplex located on a deep-water canal in the heart of Marathon. This rare income-producing property features TWO spacious homes, 2BD/2BA on each side, each unit offers approximately 927 sq. ft. of updated coastal living with impact windows and doors, granite countertops, stainless steel appliances, tile flooring throughout, and covered parking. Renovated in 2020, the property blends modern finishes with the relaxed Florida Keys boating lifestyle.
A true boater's dream, each side offers its own 30' concrete dock and seawall (60' total) complete with 30-amp shore power and fresh water hookups. Enjoy quick ocean access and easy Gulf access via Vaca Cut, making this an exceptional setup for anglers and boating enthusiasts alike. The waterside outdoor spaces are designed for entertaining and enjoying the Keys lifestyle, featuring string lighting, solar-lit dock pilings, under-dock fish lights that attract snapper and tarpon, and frequent manatee visits along the canal.
Located directly next door to Oceanfront Park, owners and guests enjoy immediate access to one of Marathon's premier waterfront parks offering pickleball courts, a dog park, kayak launch, open green space, waterfront walking trails, playgrounds, exercise equipment and community events. Conveniently located 4 miles from Sombrero Beach, and 1.5 miles from Coco Plum Beach.
Currently tenant occupied with both units rented month-to-month. This property also has strong vacation rental potential. Ideal opportunity to live in one side while renting the other, or maximize income potential with a fully turnkey investment property in one of the Florida Keys' most desirable boating communities. Current Insurances are very reasonable:
$3,841 Flood (Covers both sides)
576 - $4,303 Wind 574 - $4,129 Wind
576 - $860 HO/Liability 574 - $721 HO/Liabilty
(Pictures are of 576 99th, 574 is the same layout/finishes. Access can be arranged
For sale
Price cut: $50K (9/4)
$1,250,000
574-576 99th St, Marathon, FL 33050
4beds
1,854sqft
Duplex
Built in 1959
-- sqft lot
$-- Zestimate®
$674/sqft
$-- HOA
What's special
Solar-lit dock pilingsGranite countertopsCovered parkingTile flooring throughoutImpact windows and doorsString lightingStainless steel appliances
- 149 days
- 353
- 37
Zillow last checked:
Listing updated:
Listed by:
Alexia Mann 404-988-2259,
Seafarer Realty LLC
Source: FLKMLS,MLS#: 619866
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 4
- Full bathrooms: 4
Heating
- Has Heating (Unspecified Type)
Cooling
- Central Air
Appliances
- Included: Washer, Dishwasher, Refrigerator, Range, Microwave, Disposal, Stainless Steel Appliance(s)
Features
- Granite Counters
- Flooring: Tile
- Furnished: Yes
Interior area
- Total structure area: 1,854
- Total interior livable area: 1,854 sqft
Property
Features
- Patio & porch: Patio
- On waterfront: Yes
Lot
- Size: 5,220 Square Feet
Details
- Parcel number: 00351980000100
- Zoning: RH - Residential High
Construction
Type & style
- Home type: MultiFamily
- Architectural style: Conch
- Property subtype: Duplex
Materials
- CBS
Condition
- Updated/Remodeled
- New construction: No
- Year built: 1959
Community & HOA
Community
- Features: Bike Paths
- Subdivision: Coral Colony (52.0)
HOA
- Has HOA: No
- Services included: None
Location
- Region: Marathon
Financial & listing details
- Price per square foot: $674/sqft
- Annual tax amount: $6,476
- Date on market: 5/12/2026
- Listing terms: No Seller Finance,Cash,Conventional,FHA
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 9/4/2026 | Price change | $1,250,000-3.8%$674/sqft |
Source: | ||
| 6/8/2026 | Price change | $1,300,000-7.1%$701/sqft |
Source: | ||
| 5/12/2026 | Listed for sale | $1,400,000-15.2%$755/sqft |
Source: | ||
| 4/1/2026 | Listing removed | $1,650,000$890/sqft |
Source: | ||
| 2/2/2026 | Price change | $1,650,000-2.9%$890/sqft |
Source: | ||
| 12/31/2025 | Listed for sale | $1,700,000+106.1%$917/sqft |
Source: | ||
| 3/26/2021 | Sold | $825,000$445/sqft |
Source: | ||
Public tax history
Tax history is unavailable.
Monthly payment
Est. payment





