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Sold for $5,000,000
  • $5,000,000

    437 Harbour Dr, Duck Key, FL 33050

    3beds
    2,780sqft
    Single Family Residence
    Built in 2020
    1.35 Acres Lot
    $5,023,900 Zestimate®
    $1,799/sqft
    $7,787 Estimated rent

    Home value

    $5,023,900

    $4.37M - $5.78M

    $7,787/mo

    Zestimate® history
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    What's special

    Sprawling dockagePrivate balconyExpansive covered verandaGranite countertopsSandy beachBackyard oasisOpen concept floor plan
    Nestled on a lushly landscaped, gated point lot, this elegant Oceanfront Duck Key Estate epitomizes resort-style seaside living. Offering sprawling dockage with enviable boating, custom 2021 pool, and sandy beach, your ideal Florida Keys lifestyle awaits! Built in 2020, every detail has been considered in this intuitively designed retreat; with expertly curated aesthetics blending relaxed sophistication with the surrounding turquoise waters, beckoning the outdoors in. Upon entry, the massive great room boasts cathedral tongue and groove ceilings and sweeping views of Toms Harbour. Entertain for the masses with a breezy open concept floor plan and an expertly-appointed Chef's Kitchen in the heart of the home. Premium Viking appliances, granite countertops, custom cabinetry, and sprawling island with seating allows for cultivating culinary masterpieces with ease. Wake to endless turquoise water views in the primary suite, which features private balcony, hidden TV lift, custom walk-in closet, and opulent en suite bath with dolomite stone shower. Visitors will enjoy elevated accommodation in either of two generous guest bedrooms, also complete with Ocean Views! Additional interior upgrades include a multi-use laundry room with office and pantry space, and two climate-controlled attics. Built to withstand the elements with impact resistant doors and windows. Enjoy year-round alfresco living from an expansive covered veranda. Downstairs, this exceptional property caters to outdoor entertaining with a backyard oasis complete with in-ground, concrete, saltwater pool and spa with heater, chiller, and custom lighting. Steps from the pool, a dock with 20K and 10K lifts, allows for frequent boating. This unparalleled property also offers a sandy beach, private lagoon, and low-maintenance turf yard. Providing abundant privacy and incomparable Sunrises and Sunsets, this exquisite coastal estate offers a refined Florida Keys lifestyle where relaxation meets luxury.

    Zillow last checked:

    Listing updated:

    Listed by:

    Lisa H Ferringo,

    Coldwell Banker Schmitt Lower Keys (KW)

    Bought with:

    Sheryl Ann Phillips, 6502322908

    Coldwell Banker Schmitt Real Estate Co.

    Richard Lee Phillips, 3269442

    Coldwell Banker Schmitt Real Estate Co.

    Source: FLKMLS,MLS#: 610640MLS LogoOriginating MLS: Key West Association

    Facts & features

    Interior

    Bedrooms & bathrooms
    • Bedrooms: 3
    • Bathrooms: 3
    • Full bathrooms: 3
    Cooling
    • Central Air, Ceiling Fans(s)
    Appliances
    • Included: More Appliances, Stainless Steel Appliance(s), Wine Cooler, Microwave, Oven, Range, Refrigerator, Dishwasher, Dryer, Washer, Vent Hood, Tankless Water Heater
    • Laundry: Laundry Room
    Features
    • Cathedral Ceiling(s), Quartz Countertops, Bar, Walk-In Closet(s), Storage, Granite Counters, Built-in Cabinets, Entrance Foyer, Pantry, Split Bedroom, Utility Room
    • Flooring: Tile
    • Doors: Impact Rstnce Doors
    • Windows: Impact Rstnce Window, Roll Down Electric
    • Attic: Pull Down Stairs
    Interior area
    • Total interior livable area: 2,780 sqft

    Property

    Parking
    • Total spaces: 4
    • Parking features: Carport, Trailer Storage, Covered, Off Street, Open
    • Has carport: Yes
    • Has uncovered spaces: Yes
    Features
    • Patio & porch: Open Porch/Balcony, Deck, Patio
    • Exterior features: Storage, Sandy Beach, Lighting
    • Has private pool: Yes
    • Pool features: Heated, In Ground, Concrete, Salt Water
    • Has spa: Yes
    • Spa features: Private
    • Fencing: Fenced
    • Has view: Yes
    • View description: Ocean, Water
    • Has water view: Yes
    • Water view: Ocean,Water
    • Waterfront features: Oceanfront, Open Water, Waterfront, Sandy Beach, Dock: Wood, Dockage: Boat Lift
    Lot
    • Size: 1.35 Acres
    • Features: 1 Less Than 2 Acres
    Details
    • Additional structures: Workshop
    • Parcel number: 00376951002200
    • Zoning: IS
    • Zoning description: Improved Subivision District

    Construction

    Type & style
    • Home type: SingleFamily
    • Property subtype: Single Family Residence
    Materials
    • CBS
    • Roof: Metal
    Condition
    • Updated/Remodeled
    • New construction: No
    • Year built: 2020

    Utilities & green energy

    • Sewer: Municipal Sewer, Public Sewer
    • Utilities for property: FKAA, Buyer to Verify

    Community & neighborhood

    Security
    • Security features: Smoke Detector(s), Security System, Electric Gate
    Community
    • Community features: Pool, Bike Paths, Spa, Other, Beach, Tennis Court(s), Clubhouse
    Location
    • Region: Duck Key
    • Subdivision: Harbour Island (61.0)

    HOA & financial

    HOA
    • Has HOA: No
    • Services included: None

    Other

    Other facts
    • Listing terms: Cash,Conventional

    Price history

    DateEventPrice
    8/28/2025Sold$5,000,000-9.1%$1,799/sqft
    Source: FLKMLS #610640 Report a problem
    7/29/2025Pending sale$5,499,000$1,978/sqft
    Source: FLKMLS #610640 Report a problem
    7/11/2025Contingent$5,499,000$1,978/sqft
    Source: FLKMLS #610640 Report a problem
    5/28/2025Price change$5,499,000-12.7%$1,978/sqft
    Source: FLKMLS #610640 Report a problem
    4/8/2025Price change$6,299,000-10%$2,266/sqft
    Source: Key West AOR #610640 Report a problem
    1/22/2025Price change$6,999,000-6.7%$2,518/sqft
    Source: FLKMLS #610640 Report a problem
    7/2/2024Listed for sale$7,499,000+316.6%$2,697/sqft
    Source: Key West AOR #610640 Report a problem
    8/22/2018Listing removed$11,000$4/sqft
    Source: CENTURY 21 Schwartz Realty #577212 Report a problem
    7/3/2018Listed for rent$11,000$4/sqft
    Source: CENTURY 21 Schwartz Realty #577212 Report a problem
    6/28/2018Sold$1,800,000-14.3%$647/sqft
    Source: FLKMLS #577734 Report a problem
    12/5/2017Listed for sale$2,100,000+5%$755/sqft
    Source: Ocean Sotheby's International Realty #577734 Report a problem
    10/4/2017Listing removed$2,000,000$719/sqft
    Source: Ocean Sotheby's International Realty #577734 Report a problem
    9/1/2017Price change$2,000,000-15.8%$719/sqft
    Source: Ocean Sotheby's International Realty #577734 Report a problem
    8/9/2017Price change$2,375,000+18.8%$854/sqft
    Source: Ocean Sotheby's International Realty #577734 Report a problem
    7/17/2017Price change$2,000,000-15.8%$719/sqft
    Source: Ocean Sotheby's International Realty #577734 Report a problem
    11/29/2016Listed for sale$2,375,000-17.4%$854/sqft
    Source: Ocean Sotheby's International Realty #572940 Report a problem
    6/9/2016Listing removed$2,876,000$1,035/sqft
    Source: Island Breeze Realty, LLC #569272 Report a problem
    12/10/2015Listed for sale$2,876,000+47.5%$1,035/sqft
    Source: Island Breeze Realty, LLC Report a problem
    11/8/2014Listing removed$1,950,000$701/sqft
    Source: American Caribbean Real Estate Middle Keys #561241 Report a problem
    5/25/2013Listed for sale$1,950,000+56%$701/sqft
    Source: American Caribbean Real Estate Middle Keys #561241 Report a problem
    6/6/2003Sold$1,250,000$450/sqft
    Source: Public Record Report a problem

    Public tax history

    YearProperty taxesTax assessment
    2025$28,895 +4.2%$2,741,967 +10%
    2024$27,735 +0.1%$2,492,697 +10%
    2023$27,717 +28.5%$2,266,088 +15.2%
    2022$21,573 +16.1%$1,967,649 +7.9%
    2021$18,587 +10.6%$1,823,554 +10%
    2020$16,810 $1,657,776 +4.1%
    2019$16,810 +3.5%$1,592,471 -10.6%
    2018$16,239 +6.5%$1,782,230 +4.4%
    2017$15,251 +6.2%$1,707,175 +12.2%
    2016$14,359 +7.2%$1,521,333 +11.2%
    2015$13,391 $1,368,399

    Find assessor info on the county website

    Neighborhood: 33050

    Nearby schools

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    Estimated market value
    $5,023,900
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    Find out how much your home could sell for in as little as 3 minutes with a no-obligation cash offer.
    Estimated market value
    $5,023,900