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For sale
  • $3,200,000

    321 & 331 9th St, Key Colony Beach, FL 33051

    4beds
    3,080sqft
    : 
    $20,432/mo
    Get pre-qualified
    Duplex
    Built in 1988
    -- sqft lot
    $2,961,100 Zestimate®
    $1,039/sqft
    $-- HOA

    What's special

    Convenient pool bath
    Turn-Key Duplex on a Wide, Deep Canal - Key Colony Beach Welcome to one of the most sought-after settings in the Florida Keys -Key Colony Beach -- a private, tucked-away island community known for its quiet streets, boater-friendly waterways, and true Keys lifestyle. This full duplex sits on a impressively wide, clean, deep canal (100 ft across), offering easy access for boats of all sizes and some of the best water views in the neighborhood. Each side of the duplex mirrors the other in quality and layout: upstairs you'll find 2 spacious bedrooms and 2 full baths, while downstairs offers a convenient pool bath plus a bonus game room/flex space with extra storage -- perfect for kayaks, fishing gear, or beach toys. Both units have been tastefully updated and fully furnished, right down to the dishes, pots, pans, and bedding. Just bring your suitcase. This property is as flexible as it is beautiful. Rent both sides for strong dual-income potential, create the ultimate family compound with room for everyone, or live in one side while renting the other for built-in income. However you use it, you're getting two turn-key homes in one of the safest, most tranquil pockets of the Florida Keys. Located just minutes from open water, world-class fishing, and the laid-back charm Key Colony Beach is known for -- this is Keys living at its most effortless. Two homes. One incredible canal. Endless possibilities. SELLING ONLY AS DUPLEX - will not split them Contact Dawn McComish, P.A. -- The Singing Realtor® -- for a private showing.
    24 days
    372
    18

    Zillow last checked:

    Listing updated:

    Listed by:

    Dawn M McComish 305-395-3300,

    LPT Realty, LLC

    Source: FLKMLS,MLS#: 621036MLS Logo

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 4
      • Bathrooms: 6
      • Full bathrooms: 4
      • 1/2 bathrooms: 2
      Cooling
      • Central Air
      Appliances
      • Included: Washer, Dryer, Dishwasher, Refrigerator, Oven, Microwave, Stainless Steel Appliance(s)
      Features
      • Sun/Florida Room
      • Flooring: Tile, Laminate
      • Furnished: Yes
      Interior area
      • Total structure area: 3,080
      • Total interior livable area: 3,080 sqft
      Video & virtual tour

      Property

      Parking
      • Parking features: RV Access/Parking, Storage
      • Has garage: Yes
      Features
      • Exterior features: Storage
      • Has private pool: Yes
      • Pool features: In Ground, Fiberglass, Decked
      • On waterfront: Yes
      Lot
      • Size: 8,250 Square Feet
      Details
      • Additional parcels included: 00075560-000100
      • Parcel number: 00075560000000
      • Zoning: R-2A - Key Colony Two Family

      Construction

      Type & style
      • Home type: MultiFamily
      • Property subtype: Duplex
      Materials
      • CBS
      Condition
      • Updated/Remodeled
      • New construction: No
      • Year built: 1988

      Utilities & green energy

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

      Community & HOA

      Community
      • Features: Bike Paths
      • Security: Security Guard
      • Subdivision: Key Colony Beach (53.5)
      HOA
      • Has HOA: No
      • Services included: None
      Location
      • Region: Key Colony Beach

      Financial & listing details

      • Price per square foot: $1,039/sqft
      • Annual tax amount: $13,968
      • Date on market: 8/20/2026
      • Listing terms: No Seller Finance,Cash,Conventional,FHA

        Estimated market value

        $2,961,100

        $2.81M - $3.11M

        Not available

        Price history

        DateEventPrice
        8/20/2026Listed for sale$3,200,000$1,039/sqft
        Source: FLKMLS #621036 Report a problem

        Public tax history

        Tax history is unavailable.

        Monthly payment

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        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.
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        Climate risks

        Neighborhood: 33051

        Getting around

        7 / 100
        Car-Dependent
        28 / 100
        Somewhat Bikeable

        Nearby schools

        GreatSchools rating

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