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$1,700,000
574-576 99Th Street
Marathon, FL 33050
MLS# 617878
4 beds  |  4 baths  |  1854 sqft


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Property Description
Turnkey Duplex on Deep Water Canal Marathon Florida Rarely available beautifully renovated 2 2 + 2 2 duplex in the heart of Marathon. Each side is 927 square feet with impact windows granite counters stainless steel appliances and tile throughout. Boater's Dream 30 foot concrete dock + seawall per side 60 foot total with 30 Amp shore power plug. Direct Ocean access and quick Gulf access via Vaca Cut. Income Ready Both units currently rented month-to-month at $3,000 per side Vacation rental potential $2,500- $3,000 per week. Waterside patio with string lights solar lit dock pilings under-dock fish lights attracting snapper and tarpon Manatees frequent the canal. Located Across from City Dog Park close to Sombrero Beach shopping and dining close to Marathon International Airport and Million Air FBO fully Renovated in 2018 and covered carport. Live in one rent the other or maximize investment potential truly turnkey. Both sides tenant occupied.

Details
Maps
Contract Information
Listing Board: Florida Keys
Current Price: $1,700,000
Listing Date: 2025-12-31
List Price: $1,700,000
Location, Tax & Legal
City: MARATHON
Mile Marker: 52
Marathon Neighborhood: Airport - Ocean (72nd to 106th)
Side: Ocean
Flood Zone: AE
Alternate Key #: 1429686
Add'l Parcel #1: 00351980-000000
Parcel #: 00351980-000100
Zoning: RH - Residential High
Deed Restrictions: Unknown
Legal: N /12 LOT 4 CORAL COLONY PB3-122 KEY VACA OR432-18 OR1409-260 OR2033-2312 OR2037-481 OR3085-1151
Taxes: 12975
Tax Year: 2025
Pub Sewer HkUp: Yes
Street #: 574-576
Street Name: 99Th
Street Suffix: Street
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
General Property Description
Realtor.COM Type: Multi-family
Waterfront: Yes
Control Depth: 8
Lot SqFt: 5220
Pool: No
Total Units: 2
Acres: 0.12
SqFt Source: Tax Records
Rentals Allowed: Yes
Style: Duplex
Year Built: 1959
Living Apx SqFt: 1854
Total Bedrooms: 4
Full Baths: 4
Total Baths: 4
Remarks & Misc
Remarks – Consumer: Turnkey Duplex on Deep Water Canal Marathon Florida Rarely available beautifully renovated 2 2 + 2 2 duplex in the heart of Marathon. Each side is 927 square feet with impact windows granite counters stainless steel appliances and tile throughout. Boater's Dream 30 foot concrete dock + seawall per side 60 foot total with 30 Amp shore power plug. Direct Ocean access and quick Gulf access via Vaca Cut. Income Ready Both units currently rented month-to-month at $3,000 per side Vacation rental potential $2,500- $3,000 per week. Waterside patio with string lights solar lit dock pilings under-dock fish lights attracting snapper and tarpon Manatees frequent the canal. Located Across from City Dog Park close to Sombrero Beach shopping and dining close to Marathon International Airport and Million Air FBO fully Renovated in 2018 and covered carport. Live in one rent the other or maximize investment potential truly turnkey. Both sides tenant occupied.
Association Info
Mandatory Home Owners Asc: No
1st Right of Refusal: No
Association Fee $: 0
Fee Includes
None: 1
Dockage
Dock Length: 60
Tax Exemptions
None: 1
Appliances
Dishwasher: 1
Disposal: 1
Dryer: 1
Freezer: 1
Refrigerator: 1
Stainless Steel Appliance(s): 1
Washer: 1
Pets
Pets Allowed: 1
Cooling
Ceiling Fans(s): 1
Central Air: 1
Heating
Central: 1
Forced Air: 1
Waterfront
Canal Front: 1
Waterview
Canal View: 1
Floor
Tile: 1
Interior Features
Granite Counter Top: 1
Building Style
Above Flood: No
Conch: 1
Vehicle Storage
Carport: 1
Attached: 1
Off Street Parking: 1
Construction
Concrete: 1
Stucco: 1
Land Size
Less Than 1/4 Acre: 1
Terms
Cash: 1
Conventional: 1
Utilities
Municipal Sewer: 1
Porch/Balcony
Patio: 1
Exterior Features
Lighting: 1
GF-Interior Features
Tankless Hot Wtr Htr: 1
Status Change Info
Status: Active
Property Features
Fee Includes: None
Tax Exemptions: None
Waterfront: Canal Front
Waterview: Canal View
Building Style: Conch
Vehicle Storage: Carport; Attached; Off Street Parking
Cooling: Ceiling Fans(s); Central Air
Heating: Central; Forced Air
Utilities: Municipal Sewer
Interior Features: Granite Counter Top
Appliances: Dishwasher; Disposal; Dryer; Freezer; Refrigerator; Stainless Steel Appliance(s); Washer
Exterior Features: Lighting
Construction: Concrete; Stucco
Floor: Tile
Pets: Pets Allowed
Land Size: Less Than 1/4 Acre
Terms: Cash; Conventional
GF-Interior Features: Tankless Hot Wtr Htr

Listing Office: Continental Real Estate Group, Inc.

Last Updated: February - 01 - 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.