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Under contract
  • Price cut: $95K (6/10)
    $1,300,000

    651 9th St, Key Colony Beach, FL 33051

    2beds
    1,176sqft
    : 
    $7,514/mo
    Get pre-qualified
    Half Duplex
    Built in 1989
    4,356 Square Feet Lot
    $1,234,300 Zestimate®
    $1,105/sqft
    $-- HOA

    What's special

    Exceptional waterfront residenceSoaring wood ceilingsLight-filled spaceUpdated kitchenStackable slidersCustom baths
    This exceptional waterfront residence in Key Colony Beach offers the perfect blend of refined comfort, thoughtful design, and effortless island living. Lovingly owned, gently used, and never rented, the home reflects true pride of ownership throughout. An elevator, updated kitchen, and custom baths set the stage, while soaring wood ceilings and an open-concept kitchen, dining, and living area create a light-filled space that flows seamlessly through stackable sliders to a spacious screened porch ideal for entertaining or unwinding in the coastal breeze. The generous primary suite is a private retreat with porch access and a skylit spa-style bath featuring a jetted tub, walk-in tiled shower, and dual vanities. The lower level is designed for true indoor-outdoor living, featuring an custom, inground swimming pool surrounded by elegant marble decking, along with expansive covered and uncovered paved patios. Mature tropical landscaping enhances privacy, while ample covered and uncovered parking adds everyday convenience. Boaters will love the 37.5 foot dock with 15k boat lift, located on a wide, deep canal with quick, easy access, just minutes to both the open ocean and the Gulf via Vaca Cut. A permitted third full bathroom on the lower level sits next to a large air-conditioned storage area with sliders directly to the patio and dock, making it ideal as an angler's room for fishing gear and water toys. Key Colony Beach is one of the Florida Keys most desirable island communities, known for its wide, walkable streets, city-maintained infrastructure, and relaxed coastal charm. Residents enjoy access to marinas, a nine-hole golf course, tennis and pickleball courts, playgrounds, dining, and waterfront Sunset Park all just steps or a short bike ride away. Perfectly positioned in the Middle Keys, Key Colony Beach offers a rare combination of small-town island living, world class boating, and easy access to Marathon's shopping, dining, and local airport.
    192 days
    |
    631
    |
    42
    |

    Zillow last checked:

    Listing updated:

    Listed by:

    Karen D Raspe 305-393-9010,

    Ocean Sotheby's International,

    Jo Ann Cook 305-360-7968,

    Ocean Sotheby's International

    Source: FLKMLS,MLS#: 618394MLS Logo

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 2
      • Bathrooms: 3
      • Full bathrooms: 3
      Heating
      • Has Heating (Unspecified Type)
      Cooling
      • Central Air, Ceiling Fans(s)
      Appliances
      • Included: Washer, Dryer, Dishwasher, Refrigerator, Range, Microwave, Disposal, Stainless Steel Appliance(s)
      Features
      • Built-in Features, Granite Counters, Dade County Pine, Elevator, Storage, Walk-in Closet(s)
      • Flooring: Tile
      • Furnished: Yes
      Interior area
      • Total structure area: 1,176
      • Total interior livable area: 1,176 sqft
      Video & virtual tour

      Property

      Parking
      • Parking features: RV Access/Parking, Storage
      Features
      • Patio & porch: Open Porch/Balcony
      • Exterior features: Lighting
      • Has private pool: Yes
      • Pool features: In Ground, Decked
      • Fencing: Fenced
      • On waterfront: Yes
      Lot
      • Size: 4,356 Square Feet
      • Dimensions: 37.5 X 110
      Details
      • Parcel number: 00075730000000
      • Zoning: R-2A - Key Colony Two Family

      Construction

      Type & style
      • Home type: SingleFamily
      • Property subtype: Half Duplex
      Materials
      • CBS
      Condition
      • Year built: 1989

      Utilities & green energy

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

      Community & HOA

      Community
      • Features: Beach, Bike Paths
      • Security: Security Guard
      • 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: $1,105/sqft
      • Tax assessed value: $972,572
      • Annual tax amount: $9,607
      • Date on market: 7/13/2026

        Estimated market value

        $1,234,300

        $1.17M - $1.30M

        $4,930/mo

        Price history

        DateEventPrice
        8/2/2026Contingent$1,300,000$1,105/sqft
        Source: MLKAR #618394 Report a problem
        7/13/2026Listed for sale$1,300,000$1,105/sqft
        Source: MLKAR #618394 Report a problem
        6/30/2026Contingent$1,300,000$1,105/sqft
        Source: Key West AOR #618394 Report a problem
        6/10/2026Price change$1,300,000-6.8%$1,105/sqft
        Source: FLKMLS #618394 Report a problem
        4/6/2026Price change$1,395,000-6.7%$1,186/sqft
        Source: FLKMLS #618394 Report a problem
        1/30/2026Listed for sale$1,495,000+35.9%$1,271/sqft
        Source: FLKMLS #618394 Report a problem
        7/7/2022Sold$1,100,000$935/sqft
        Source: FLKMLS #601362 Report a problem
        6/23/2022Pending sale$1,100,000$935/sqft
        Source: FLKMLS #601362 Report a problem
        6/10/2022Listed for sale$1,100,000+411.6%$935/sqft
        Source: MLKAR #601362 Report a problem
        3/9/1994Sold$215,000$183/sqft
        Source: Public Record Report a problem

        Public tax history

        YearProperty taxesTax assessment
        2025$9,607 -3.9%$972,572 -1.5%
        2024$9,993 +4.1%$987,672 +4.7%
        2023$9,599 +46.4%$943,390 +57.5%
        2022$6,557 +10.2%$598,827 +10%
        2021$5,949 +13.4%$544,388 +10%
        2020$5,246 $494,898 -1.1%
        2019$5,246 -1.1%$500,585 +11.3%
        2018$5,302 +14.5%$449,608 +1.4%
        2017$4,632 +3.7%$443,535 +0.5%
        2016$4,468 -0.4%$441,132 +16%
        2015$4,486 $380,165
        Find assessor info on the county website

        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.
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        Climate risks

        Neighborhood: 33051

        Getting around

        3 / 100
        Car-Dependent
        28 / 100
        Somewhat Bikeable

        Nearby schools

        GreatSchools rating

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