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For sale
    • $1,250,000

    580 9th St, Key Colony Beach, FL 33051

    2beds
    1,269sqft
    : 
    Half Duplex, Single Family Residence
    Built in 1988
    3,920.4 Square Feet Lot
    $1,180,000 Zestimate®
    $985/sqft
    $-- HOA

    What's special

    Two bedroomsTwo bathsOpen floor planSoaring ceilingsGranite and stainless kitchenTerracotta flooring throughout
    This east-facing, stilted 1/2 duplex is now available. The home features soaring ceilings and an open floor plan that extends onto a roomy balcony overlooking the lower patio and a 37.5-foot dock.The interior includes a granite and stainless kitchen, two bedrooms, two baths, and terracotta flooring throughout. Located in a prime location on Key Colony Beach, this property is just a few minutes from the ocean or gulf. This home will making a perfect second home or vacation rental.
    87 days
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    434
    |
    10
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    Zillow last checked: 7 hours ago

    Listing updated: February 12, 2026 at 02:44am

    Listed by:

    Steve M Smith, P.A. 305-849-1196,

    Key Colony Beach Realty

    Source: FLKMLS,MLS#: 617814MLS LogoOriginating MLS: Marathon/Lower Keys

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      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 2
      • Bathrooms: 2
      • Full bathrooms: 2
      Heating
      • Central
      Cooling
      • Central Air, Ceiling Fans(s)
      Appliances
      • Included: Washer, Microwave, Oven, Range, Refrigerator, Dishwasher, Dryer
      • Laundry: Laundry Room
      Features
      • Granite Counters, Bar, Walk-In Closet(s), Dade County Pine, Pantry, Cathedral Ceiling(s)
      • Flooring: Tile
      • Windows: Drapes/Blinds Incl, Aluminum Frames, Accordion
      Interior area
      • Total interior livable area: 1,269 sqft
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      Property

      Parking
      • Parking features: Carport, Off Street
      • Has carport: Yes
      Features
      • Patio & porch: Open Porch/Balcony, Deck
      • Exterior features: Storage
      • Has view: Yes
      • View description: Canal
      • Has water view: Yes
      • Water view: Canal
      • Waterfront features: Canal Front, Waterfront, Seawall: Rip Rap, Dock: Wood, Dock Length: 37
      Lot
      • Size: 3,920.4 Square Feet
      • Dimensions: 37 x 110
      • Features: Less Than 1/4 Acre
      Details
      • Parcel number: 00075200000000
      • Zoning: R-2A
      • Zoning description: Key Colony Two Family

      Construction

      Type & style
      • Home type: SingleFamily
      • Property subtype: Half Duplex, Single Family Residence
      • Attached to another structure: Yes
      Materials
      • CBS
      • Roof: Tile
      Condition
      • Year built: 1988

      Utilities & green energy

      • Electric: Elect Separate Meter
      • Sewer: Municipal Sewer, Public Sewer
      • Utilities for property: FKAA, Cable Available, Cable Connected

      Community & HOA

      Community
      • Security: Patrolled Area
      • Subdivision: Key Colony Bch 1st Addn Amd Plat (53.5)
      HOA
      • Has HOA: No
      • Services included: None
      Location
      • Region: Key Colony Beach

      Financial & listing details

      • Price per square foot: $985/sqft
      • Tax assessed value: $869,877
      • Annual tax amount: $8,155
      • Date on market: 12/23/2025
      • Listing terms: Cash,Conventional
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        Estimated market value

        $1,180,000

        $1.12M - $1.24M

        $4,382/mo

        Price history

        Price history
        DateEventPrice
        12/23/2025Listed for sale$1,250,000+93.8%$985/sqft
        Source: FLKMLS #617814 Report a problem
        4/14/2016Sold$645,000-7.2%$508/sqft
        Source: FLKMLS #568770 Report a problem
        11/15/2015Listed for sale$695,000+127.9%$548/sqft
        Source: American Caribbean Real Estate - Mid & Lower #568770 Report a problem
        5/10/1999Sold$305,000+19.6%$240/sqft
        Source: FLKMLS #414663 Report a problem
        8/28/1996Sold$255,000$201/sqft
        Source: Public Record Report a problem

        Public tax history

        Public tax history
        YearProperty taxesTax assessment
        2025$8,155 +3.2%$788,842 +10%
        2024$7,902 +7.7%$717,129 +10%
        2023$7,340 +12.9%$651,935 +10%
        2022$6,501 +10.9%$592,668 +10%
        2021$5,862 +11%$538,789 +8%
        2020$5,282 $498,683 -2.4%
        2019$5,282 -2.2%$510,981 -0.9%
        2018$5,403 +3%$515,753 -0.7%
        2017$5,246 +1.8%$519,290 +27.6%
        2016$5,154 +36.6%$406,884 +0.7%
        2015$3,772 $404,056

        Find assessor info on the county website

        BuyAbility℠ payment

        Est. payment
        $6,993/mo
        Principal & interest
        $6139
        Property taxes
        $854
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          Climate risks

          Neighborhood: 33051

          Getting around

          4 / 100
          Car-Dependent
          28 / 100
          Somewhat Bikeable

          Nearby schools

          GreatSchools rating

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