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Under contract
  • $1,400,000

    640 9th St, Key Colony Beach, FL 33051

    3beds
    1,596sqft
    : 
    Half Duplex, Single Family Residence
    Built in 1988
    3,920.4 Square Feet Lot
    $1,338,300 Zestimate®
    $877/sqft
    $-- HOA

    What's special

    East facing waterfrontStilted half duplexFour bathroomsMetal roofThree bedroomsHeated and chilled poolAir conditioned cabana room
    Welcome to this inviting east facing, waterfront, stilted half duplex in Key Colony Beach, offering three bedrooms, four bathrooms, and nearly 1,600 square feet of interior living space. With 37.5 feet of concrete seawall, step down wooden dock with concrete pilings, heated and chilled pool, and a spacious concrete patio for lounging and entertaining, this property is perfectly designed for the Keys lifestyle. Peace of mind features include metal roof, Hardie board siding, recently upgraded impact windows and doors, and a 2020 AC. A generous carport and driveway provide ample parking, along with a downstairs enclosure that features a full convenience bathroom, air conditioned cabana room, and a one car garage for storage of toys and gear. Saltillo tile flows throughout the first level, where you will find an open concept great room with soaring ceilings that connect the kitchen, dining, and living areas. Enjoy indoor to outdoor living from the large covered second floor patio ideal for al fresco meals, morning coffee, or watching stunning sunrises over the canal. The newly renovated primary bathroom showcases a spacious step-in tiled shower, quartz topped vanity, and elegant gold finishes. A comfortable guest bedroom and bathroom are conveniently located on the same level, with laundry in the hallway closet. Upstairs, the loft offers a third bedroom and full bathroom with plank flooring, creating a private retreat for guests or family. Your Key Colony Beach haven awaits. The City of Key Colony Beach offers its own police department, City Hall, tennis and pickleball courts, dog park, nine hole par three golf course, two playgrounds, and two new restaurants opening soon. Enjoy the walkable island lifestyle and the best of coastal living here!
    60 days
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    543
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    8
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    Zillow last checked: 8 hours ago

    Listing updated: February 04, 2026 at 02:13am

    Listed by:

    Karen D Raspe 305-393-9010,

    Ocean Sotheby's International,

    Ally Kelley 727-459-0493,

    Ocean Sotheby's International

    Source: FLKMLS,MLS#: 617620MLS LogoOriginating MLS: Marathon/Lower Keys

    Facts & features

    Interior

    Bedrooms & bathrooms
    • Bedrooms: 3
    • Bathrooms: 4
    • Full bathrooms: 4
    Cooling
    • Central Air, Ceiling Fans(s)
    Appliances
    • Included: Washer, Stainless Steel Appliance(s), Microwave, Range, Refrigerator, Dishwasher, Dryer
    Features
    • Cathedral Ceiling(s), Granite Counters, Storage
    • Flooring: Tile
    • Doors: Sliding Glass Doors
    • Windows: Impact Rstnce Window, Other Windows/Doors, Accordion
    • Furnished: Yes
    Interior area
    • Total interior livable area: 1,596 sqft

    Property

    Parking
    • Total spaces: 1
    • Parking features: Garage, RV Parking Open, Covered, Trailer Storage, Open, Attached, Carport
    • Has garage: Yes
    • Has carport: Yes
    • Has uncovered spaces: Yes
    Features
    • Patio & porch: Open Porch/Balcony, Patio
    • Has private pool: Yes
    • Pool features: In Ground, Decked, Concrete
    • Fencing: Privacy
    • Has view: Yes
    • View description: Canal
    • Has water view: Yes
    • Water view: Canal
    • Waterfront features: Canal Front, Waterfront, Seawall: Concrete, Dock: Wood, Dock Length: 375
    Lot
    • Size: 3,920.4 Square Feet
    • Dimensions: 37.5 x 110
    • Features: Less Than 1/4 Acre
    Details
    • Parcel number: 00075170000100
    • Zoning: R-2A
    • Zoning description: Key Colony Two Family
    • Special conditions: Standard

    Construction

    Type & style
    • Home type: SingleFamily
    • Property subtype: Half Duplex, Single Family Residence
    • Attached to another structure: Yes
    Materials
    • CBS
    • Roof: Metal
    Condition
    • Updated/Remodeled
    • New construction: No
    • Year built: 1988

    Utilities & green energy

    • Sewer: Community Swr Plant, Public Sewer
    • Utilities for property: FKAA, Cable Available, Buyer to Verify, Cable Connected

    Community & HOA

    Community
    • Features: Community Boat Ramp, Bike Paths, Airport/Runway, Beach, Tennis Court(s)
    • Security: Smoke Detector(s), Patrolled Area
    • 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: $877/sqft
    • Tax assessed value: $880,727
    • Annual tax amount: $8,412
    • Date on market: 12/6/2025
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    Estimated market value

    $1,338,300

    $1.27M - $1.41M

    $5,870/mo

    Price history

    Price history
    DateEventPrice
    1/23/2026Contingent$1,400,000$877/sqft
    Source: Key West AOR #617620 Report a problem
    12/6/2025Listed for sale$1,400,000+3.6%$877/sqft
    Source: FLKMLS #617620 Report a problem
    6/10/2022Sold$1,352,000$847/sqft
    Source: FLKMLS #600605 Report a problem
    4/17/2022Contingent$1,352,000$847/sqft
    Source: FLKMLS #600605 Report a problem
    4/16/2022Listed for sale$1,352,000+145.8%$847/sqft
    Source: FLKMLS #600605 Report a problem

    Public tax history

    Public tax history
    YearProperty taxesTax assessment
    2025$8,762 -2.3%$880,727 +0.1%
    2024$8,972 -1.1%$879,992 -0.9%
    2023$9,068 +33.6%$888,245 +45.2%

    Find assessor info on the county website

    BuyAbility℠ payment

    Est. payment
    $8,415/mo
    Principal & interest
    $6968
    Property taxes
    $957
    Home insurance
    $490

      Climate risks

      Neighborhood: 33051

      Nearby schools

      GreatSchools rating

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