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For sale
  • $1,725,000

    668 & 670 89th St, Marathon, FL 33050

    4beds
    2,016sqft
    : 
    $10,642/mo
    Get pre-qualified
    Duplex
    Built in 1976
    -- sqft lot
    $1,626,200 Zestimate®
    $856/sqft
    $-- HOA

    What's special

    Elevated on stilts
    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.
    197 days
    |
    198
    |
    14
    |

    Zillow last checked:

    Listing updated:

    Listed by:

    Frank Griffiths 305-563-1838,

    Lokation Real Estate

    Source: FLKMLS,MLS#: 618025MLS Logo

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 4
      • Bathrooms: 4
      • Full bathrooms: 4
      Cooling
      • Central Air, Ceiling Fans(s)
      Appliances
      • Included: Washer, Dryer, Dishwasher, Refrigerator, Range, Oven, Microwave, Freezer
      Interior area
      • Total structure area: 2,016
      • Total interior livable area: 2,016 sqft

      Property

      Features
      • Patio & porch: Open Porch/Balcony
      • On waterfront: Yes
      Lot
      • Size: 6,098 Square Feet
      Details
      • Parcel number: 00349830000000
      • Zoning: RM - Residential Medium

      Construction

      Type & style
      • Home type: MultiFamily
      • Property subtype: Duplex
      Materials
      • CBS
      Condition
      • Year built: 1976

      Utilities & green energy

      • Utilities for property: Water Separate Meter, Elect Separate Meter, Cable Available

      Community & HOA

      Community
      • Subdivision: Gulfstream Shore (Marathon) (52.0)
      HOA
      • Has HOA: No
      • Services included: None
      Location
      • Region: Marathon

      Financial & listing details

      • Price per square foot: $856/sqft
      • Annual tax amount: $12,919
      • Date on market: 1/10/2026

        Estimated market value

        $1,626,200

        $1.54M - $1.71M

        $3,162/mo

        Price history

        DateEventPrice
        4/3/2026Price change$1,725,000-1.4%$856/sqft
        Source: MLKAR #618025 Report a problem
        1/10/2026Listed for sale$1,750,000$868/sqft
        Source: MLKAR #618025 Report a problem

        Public tax history

        Tax history is unavailable.

        Monthly payment

        Est. payment

        Payment breakdown

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        All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
        HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
        Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
        See how much you could borrow to make a competitive offer.

        Climate risks

        Neighborhood: 33050

        Getting around

        24 / 100
        Car-Dependent
        50 / 100
        Bikeable

        Nearby schools

        GreatSchools rating

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