Search for Property

574 & 576 99th Street Ocean, Marathon, FL 33050

New Listing
$1,400,000
Property Type: Residential Bedrooms: 4 Baths: 4 Square Footage: 1,854 Lot Size (sq. ft.): 5,220 Status: Active
Current Price: $1,400,000 List Date: 5/12/2026 Last Modified: 5/12/2026

Overview

Description

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 2BD/2BA units, each offering 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 2018, 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. 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 adja ...

Listing Details MLS# 619866

Location, Tax & Legal

Street #
574 & 576
Street Name
99th Street Ocean
Key/Island
Marathon
State/Province
FL
Zip Code
33050
County
Monroe
Subdivision
Coral Colony (52.0)
Area
16 - Sombrero Bch Rd to Vaca Cut - Oceanside
City
MARATHON
Off Shore Island
No
Mile Marker
52
Marathon Neighborhood
Airport - Ocean (72nd to 106th)
Senior Community YN
No
Side
Ocean
Flood Zone
AE 7
Alternate Key #
00351980-000100
Parcel #
00351980-000100
Zoning
RH - Residential High
Deed Restrictions
No
Taxes
6476.6
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

General Property Description

Realtor.COM Type
Multi-family
Style
Duplex
Waterfront
Yes
Control Depth
4
Pool
No
Year Built
1959
Lot SqFt
5220
Lot Sqft Source
Property Data Card
Living Apx SqFt
1854
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
No
1st Right of Refusal
No
Association Fee $
0

Dockage

Dock Length
60
Seawall
Concrete

More Information

Building Style

Above Flood
Unknown
Conch
Yes

Financial Status

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

Remarks & Misc

Remarks – Consumer
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 2BD/2BA units, each offering 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 2018, 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. 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 adjacent to Oceanfront Park & Dog Park, owners and guests enjoy immediate access to one of Marathon's premier waterfront parks offering a dog park, kayak launch, open green space, waterfront walking areas, playgrounds, and frequent community events. Conveniently located near Sombrero Beach, shopping, dining, and Florida Keys Marathon International Airport. 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.
Directions
US-1 to 99th Street, property is on the left about half way down

Fee Includes

None
Yes

Tax Exemptions

Homestead
Yes

Appliances

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

Pets

Pets Allowed
Yes

Cooling

Central Air
Yes

Heating

Central
Yes

Waterfront

Canal Front
Yes

Waterview

Canal View
Yes

Floor

Tile
Yes

Neighborhood Feature

Airstrip
Yes
Bike Paths
Yes

Interior Features

Granite Counter Top
Yes

Property Condition

Updated/Remodeled
Yes

Windows/Doors

Impact Rstnce Doors
Yes
Impact Rstnce Window
Yes

Vehicle Storage

Carport
Yes
Covered Parking
Yes
Off Street Parking
Yes

Construction

CBS
Yes

Land Size

Less Than 1/4 Acre
Yes

Furnished

Furnished
Yes
Partially
Yes

Terms

Cash
Yes
Conventional
Yes
FHA
Yes
No Seller Finance
Yes
VA
Yes

Utilities

Buyer to Verify
Yes

Porch/Balcony

Patio
Yes

Title

Negotiable
Yes

Roof

Other Roof
Yes

GF-Interior Features

Tankless Hot Wtr Htr
Yes

Property Features

Fee Includes: None Tax Exemptions: Homestead Waterfront: Canal Front Waterview: Canal View Property Condition: Updated/Remodeled Building Style: Conch Vehicle Storage: Carport; Covered Parking; Off Street Parking Furnished: Furnished; Partially Cooling: Central Air Heating: Central Utilities: Buyer to Verify Interior Features: Granite Counter Top Appliances: Dishwasher; Disposal; Microwave; Range; Refrigerator; Stainless Steel Appliance(s); Washer Construction: CBS Floor: Tile Roof: Other Roof Pets: Pets Allowed Neighborhood Feature: Airstrip; Bike Paths Land Size: Less Than 1/4 Acre Terms: Cash; Conventional; FHA; No Seller Finance; VA Title: Negotiable GF-Interior Features: Tankless Hot Wtr Htr
Listing Office: Seafarer Realty LLC
Last Updated: May - 12 - 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.