668 & 670 89Th Street Ocean, Marathon, FL 33050

$1,725,000

Property Type: Residential Bedrooms: 4 Baths: 4 Square Footage: 2,016 Lot Size (sq. ft.): 6,440 Status: Active

Current Price: $1,725,000 List Date: 1/10/2026 Last Modified: 4/08/2026

Description

Magnificent legal duplex in the vibrant heart of the Florida Keys, offering highly sought-after 7-day rental flexibility--an exceptional advantage for investors and homeowners alike. Elevated on stilts, this impressive property features two spacious bedrooms and two full bathrooms on each side, creating the perfect setup for extended families, dual living, or maximizing rental income. Ideally located just four properties from the Atlantic Ocean, the home boasts an expansive 70-foot seawall with quick, easy boating access to open water-making it a true boater's paradise. Both residences have been thoughtfully updated with modern finishes, enhancing comfort, style, and long-term value. Whether you're looking for a high-performing vacation rental, a primary residence with income potential, or a combination of both, this rare duplex offers unmatched versatility in one of the Florida Keys' most desirable locations.

Open Houses

Sunday, April 26, 10:00 am - 2:00 pm

More Information MLS# 618025

Contract Information

Listing Board: Marathon/Lower Keys As is Rght to Inspct: Yes Species List: No Current Price: $1,725,000 Listing Date: 2026-01-10 List Price: $1,725,000

Location, Tax & Legal

City: MARATHON Off Shore Island: No Mile Marker: 52 Marathon Neighborhood: Airport - Ocean (72nd to 106th) Side: Ocean Flood Zone: AE Alternate Key #: 1427586 Handicap Access: No Parcel #: 00349830-000000 Zoning: RM - Residential Medium Deed Restrictions: No Legal: Gulfstream Shores Of Marathon Fla Plat No 1 Key Vaca Pb3-89 N1/2 Lot 5 Blk 4 Taxes: 12919.92 Tax Year: 2025 Pub Sewer HkUp: Yes 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 Waterfront: Yes Control Depth: 5 Lot SqFt: 6440 Pool: No Lot Sqft Source: Property Data Card Total Units: 2 Acres: 0.14 SqFt Source: Property Data Card Rentals Allowed: Yes Min Rental Days: 7 Style: Duplex Year Built: 1976 Living Apx SqFt: 2016 Total Bedrooms: 4 Full Baths: 4 Total Baths: 4

Remarks & Misc

Remarks – Consumer: Magnificent legal duplex in the vibrant heart of the Florida Keys, offering highly sought-after 7-day rental flexibility--an exceptional advantage for investors and homeowners alike. Elevated on stilts, this impressive property features two spacious bedrooms and two full bathrooms on each side, creating the perfect setup for extended families, dual living, or maximizing rental income. Ideally located just four properties from the Atlantic Ocean, the home boasts an expansive 70-foot seawall with quick, easy boating access to open water-making it a true boater's paradise. Both residences have been thoughtfully updated with modern finishes, enhancing comfort, style, and long-term value. Whether you're looking for a high-performing vacation rental, a primary residence with income potential, or a combination of both, this rare duplex offers unmatched versatility in one of the Florida Keys' most desirable locations.

Association Info

Mandatory Home Owners Asc: No 1st Right of Refusal: No Association Fee $: 0

Fee Includes

None: 1

Dockage

Seawall: Concrete

Tax Exemptions

None: 1

Appliances

Dishwasher: 1 Dryer: 1 Freezer: 1 Microwave: 1 Oven: 1 Range: 1 Refrigerator: 1 Washer: 1

Pets

Pets Allowed: 1

Cooling

Ceiling Fans(s): 1 Central Air: 1

Waterfront

Canal Front: 1

Waterview

Canal View: 1 Ocean View: 1 Open Water View: 1

Building Style

Above Flood: Unknown

Vehicle Storage

Covered Parking: 1

Construction

CBS: 1

Land Size

Less Than 1/4 Acre: 1

Furnished

Negotiable: 1

Utilities

Buyer to Verify: 1 Cable Available: 1 Elect Separate Meter: 1 FKAA: 1 Municipal Sewer: 1 Water Separate Meter: 1

Porch/Balcony

Open Porch/Balcony: 1

Title

Negotiable: 1

Status Change Info

Status: Active

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: April - 08 - 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.

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