668 & 670 89Th Street Ocean, Marathon, FL 33050
$1,750,000
Property Type:
Residential
Bedrooms:
4
Baths:
4
Square Footage:
2,016
Lot Size (sq. ft.):
6,440
Status:
Active
Current Price:
$1,750,000
List Date:
1/10/2026
Last Modified:
1/29/2026
Description
Magnificent legal duplex in the vibrant heart of the Florida Keys, offering the highly desirable flexibility of 7-day rentals. Elevated on stilts, this impressive property features two spacious bedrooms and two full bathrooms on each side, providing endless possibilities for large families, savvy investors, or a live-in income opportunity. Located just four properties from the Atlantic Ocean, the home boasts an exceptional 70-foot seawall with easy boating access—truly a boater's paradise. Both sides of the duplex offer numerous modern updates that enhance comfort, style, and value. A rare opportunity to own a versatile investment or primary residence in one of the Keys most sought-after locations.
More Information MLS# 618025
Contract Information
Current Price: $1,750,000
Listing Date: 2026-01-10
Listing Board: Marathon/Lower Keys
List Price: $1,750,000
As is Rght to Inspct: Yes
Species List: No
Location Tax Legal
Street #: 668 & 670
Street Name: 89Th Street Ocean
Key/Island: Marathon
State/Province: FL
Zip Code: 33050
County: Monroe
Subdivision: Gulfstream Shore (Marathon) (52.0)
Area: 16 - Sombrero Bch Rd to Vaca Cut - Oceanside
General Property Description
Realtor.COM Type: Multi-family
Style: Duplex
Waterfront: Yes
Control Depth: 5
Pool: No
Year Built: 1976
Total Units: 2
Lot SqFt: 6440
Lot Sqft Source: Property Data Card
Acres: 0.14
Living Apx SqFt: 2016
SqFt Source: Property Data Card
Total Bedrooms: 4
Full Baths: 4
Total Baths: 4
Rentals Allowed: Yes
Min Rental Days: 7
Status Change Info
Status: Active
Association Info
Mandatory Home Owners Asc: No
1st Right of Refusal: No
Dockage
Seawall: Concrete
Building Style
Above Flood: Unknown
Property Features
Fee Includes: None
Tax Exemptions: None
Waterfront: Canal Front
Waterview: Canal View; Ocean View; Open Water View
Vehicle Storage: Covered Parking
Furnished: Negotiable
Cooling: Ceiling Fans(s); Central Air
Utilities: Buyer to Verify; Cable Available; Elect Separate Meter; FKAA; Municipal Sewer; Water Separate Meter
Appliances: Dishwasher; Dryer; Freezer; Microwave; Oven; Range; Refrigerator; Washer
Construction: CBS
Pets: Pets Allowed
Land Size: Less Than 1/4 Acre
Title: Negotiable
Listing Office: Lokation Real Estate
Last Updated: January - 29 - 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.
