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For sale
    • $13,250,000

    121 Knollwood Dr, Key Biscayne, FL 33149

    5beds
    4,924sqft
    : 
    $91,369/mo
    Get pre-qualified
    Single Family Residence
    Built in 1972
    0.32 Acres Lot
    $11,878,100 Zestimate®
    $2,691/sqft
    $-- HOA

    What's special

    Gated entryTwo dry jet-ski docksBoat liftDetached enclosed two-car garageFive bedroomsAbundant natural lightGenerous land
    Designed for those who value privacy, space, and a true connection to the water, this exceptional waterfront residence offers a rare boater’s retreat and a warm, inviting setting for family living. Tucked away on a quiet street and set on an expansive nearly 14,000-square-foot lot, the home impresses from the moment you arrive with its generous front yard and gated entry, offering both presence and privacy. Inside, a bright two-story layout unfolds with an open, airy feel, thoughtfully designed for both everyday comfort entertaining. The residence features five bedrooms, four full bathrooms, plus a cabana bath, all flowing seamlessly enhanced by abundant natural light and tranquil water views. Renovated in 2019, the home includes impact windows and doors, a beautifully updated kitchen and appliances, lighting throughout, gas generator, and a pool heater and chiller for year-round enjoyment. The outdoor living experience is truly exceptional…enjoy direct water access with a private dock, boat lift, and two dry jet-ski docks, allowing you to step straight from your backyard to open water and fully embrace the waterfront lifestyle. A detached, enclosed two-car garage adds versatility, while the gated property offers abundant parking for up to six vehicles, a rare and valuable amenity in Key Biscayne. Homes of this caliber which offer privacy, boating infrastructure, generous land, and modern upgrades are increasingly rare and best appreciated in person.
    205 days
    |
    455
    |
    15
    |

    Zillow last checked:

    Listing updated:

    Listed by:

    Brigitte Nachtigall 305-710-9664,

    One Sotheby's International Realty,

    Mark Chatburn 305-393-6032,

    One Sotheby's International Realty

    Source: MIAMI,MLS#: A11936017MLS LogoOriginating MLS: A-Miami Association of REALTORS

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 5
      • Bathrooms: 5
      • Full bathrooms: 4
      • 1/2 bathrooms: 1
      Rooms
      • Room types: Family Room
      Heating
      • Electric
      Cooling
      • Electric
      Appliances
      • Included: Trash Compactor, Dishwasher, Disposal, Dryer, Electric Water Heater, Microwave, Electric Range, Refrigerator, Oven, Washer
      • Laundry: Laundry Room
      Features
      • Walk-In Closet(s)
      • Flooring: Concrete
      • Windows: Bay Window(s)
      Interior area
      • Total structure area: 5,775
      • Total interior livable area: 4,924 sqft

      Property

      Parking
      • Total spaces: 2
      • Parking features: Additional Spaces Available, Covered, Driveway, Garage Door Opener
      • Garage spaces: 2
      • Has uncovered spaces: Yes
      Features
      • Stories: 2
      • Entry location: First Floor Entry
      • Patio & porch: Patio
      • Exterior features: Lighting, Balcony
      • Has private pool: Yes
      • Pool features: In Ground, Community
      • Has view: Yes
      • View description: Canal
      • Has water view: Yes
      • Water view: Canal
      • Waterfront features: Ocean Access, Canal Front, No Fixed Bridges, WF/Pool/Ocean Access
      • Frontage length: 0
      Lot
      • Size: 0.32 Acres
      • Features: 1/4 To Less Than 1/2 Acre Lot
      Details
      • Parcel number: 2452050110280
      • Zoning: 2000

      Construction

      Type & style
      • Home type: SingleFamily
      • Property subtype: Single Family Residence
      Materials
      • CBS Construction
      • Roof: Metal
      Condition
      • Year built: 1972

      Utilities & green energy

      • Sewer: Public Sewer
      • Water: Municipal Water

      Community & HOA

      Community
      • Features: Gated, Fitness Center, Card/Electric Gate, Pool, Exercise Room
      • Subdivision: Cape Fla Sub Sec 2
      HOA
      • Has HOA: No
      Location
      • Region: Key Biscayne

      Financial & listing details

      • Price per square foot: $2,691/sqft
      • Tax assessed value: $7,342,052
      • Annual tax amount: $65,834
      • Date on market: 1/2/2026
      • Listing terms: All Cash,Conventional

        Estimated market value

        $11,878,100

        $11.28M - $12.47M

        $44,219/mo

        Price history

        DateEventPrice
        2/26/2026Price change$13,250,000-4.3%$2,691/sqft
        Source: MIAMI #A11936017 Report a problem
        2/26/2026Pending sale$13,850,000$2,813/sqft
        Source: MIAMI #A11936017 Report a problem
        1/2/2026Listed for sale$13,850,000+222.1%$2,813/sqft
        Source: MIAMI #A11936017 Report a problem
        8/16/2018Sold$4,300,000-13.1%$873/sqft
        Source: Public Record Report a problem
        7/30/2018Pending sale$4,950,000$1,005/sqft
        Source: Great Properties International LLC #A10110869 Report a problem
        9/25/2017Price change$4,950,000-5.7%$1,005/sqft
        Source: Great Properties International LLC #A10110869 Report a problem
        4/3/2017Price change$5,250,000-2.6%$1,066/sqft
        Source: Great Properties International LLC #A10110869 Report a problem
        1/6/2017Price change$5,390,000-6.3%$1,095/sqft
        Source: Great Properties International LLC #A10110869 Report a problem
        10/3/2016Price change$5,750,000-2.5%$1,168/sqft
        Source: Great Properties International LLC #A10110869 Report a problem
        7/6/2016Listed for sale$5,900,000+55.3%$1,198/sqft
        Source: Great Properties International LLC #A10110869 Report a problem
        12/6/2004Sold$3,800,000+150.8%$772/sqft
        Source: Public Record Report a problem
        9/6/2000Sold$1,515,000$308/sqft
        Source: Public Record Report a problem

        Public tax history

        YearProperty taxesTax assessment
        2025$65,834 +2.3%$4,137,983 +2.9%
        2024$64,351 +1.3%$4,021,364 +3%
        2023$63,510 +4.4%$3,904,237 +3%
        2022$60,807 -0.4%$3,790,522 +3%
        2021$61,045 +2.9%$3,680,119 +1.4%
        2020$59,349 -1.4%$3,629,309 0%
        2019$60,167 -11.2%$3,631,034 -14.1%
        2018$67,768 $4,227,441 -0.1%
        2017$67,768 -1%$4,231,918 +48%
        2016$68,440 +44.4%$2,859,123 +0.7%
        2015$47,392 -1.5%$2,839,249 +0.8%
        2014$48,117 +3.1%$2,816,716 +1.5%
        2013$46,661 +0%$2,775,090 +1.7%
        2012$46,661 -3.4%$2,728,703 +4.5%
        2010$48,305 +4.6%$2,610,076 -0.4%
        2009$46,167 -2.3%$2,621,190
        2006$47,276 --
        2005$47,276 +25.8%--
        2004$37,590 +10.3%--
        2003$34,066 +70.9%--
        2002$19,937 --
        2001$19,937 --
        Find assessor info on the county website

        Monthly payment

        Est. payment

        Payment breakdown

        Explore the cost of this home by adjusting the details. Changes won't be saved.
        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: 33149

        Getting around

        49 / 100
        Car-Dependent
        55 / 100
        Bikeable

        Nearby schools

        GreatSchools rating
        Schools provided by the listing agent
        • Elementary: Keybiscayne
        • Middle: Ponce De Leon
        • High: Coral Gables

        Source: MIAMI. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.

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