Skip main navigation
For sale
  • Price cut: $650K (12/9)
    $5,850,000

    421-423 Simonton St, Key West, FL 33040

    6beds
    3,010sqft
    : 
    Duplex, Multi Family
    Built in 2020
    -- sqft lot
    $-- Zestimate®
    $1,944/sqft
    $-- HOA

    What's special

    Two Transient Homes Now Available For Sale. Just one block off world-famous Duval Street, this rare property offers two homes - each 3 bedrooms, 3.5 baths and private pools. These have strong rental histories. These well-appointed residences blend island charm with modern comfort, featuring open-concept living areas, updated kitchens and private ensuite bedrooms. Thoughtfully designed for guest privacy and relaxation, each home includes its own outdoor lounging space and pool--perfect for cooling off after a day in the sun or enjoying a quiet evening under the palms.Whether you're looking for a investment opportunity, a vacation retreat with rental flexibility, or a mix of both, this unique setup delivers unmatched versatility just steps from the vibrant restaurants, galleries, and nightlife of Duval Street.
    246 days
    |
    645
    |
    19
    |

    Zillow last checked: 8 hours ago

    Listing updated: December 09, 2025 at 05:04am

    Listed by:

    Will Langley 305-394-9020,

    Berkshire Hathaway HomeServices Knight & Gardner Realty,

    Logan Guevremont 305-394-1244,

    Berkshire Hathaway HomeServices Knight & Gardner Realty

    Source: FLKMLS,MLS#: 614546MLS LogoOriginating MLS: Key West Association

    Tour with a local agent

    Facts & features

    Interior

    Bedrooms & bathrooms
    • Bedrooms: 6
    • Bathrooms: 8
    • Full bathrooms: 6
    • 1/2 bathrooms: 2
    Cooling
    • Central Air, Ceiling Fans(s)
    Appliances
    • Included: Washer, Stainless Steel Appliance(s), Microwave, Oven, Range, Refrigerator, Dryer
    Features
    • Built-in Cabinets
    Interior area
    • Total interior livable area: 3,010 sqft

    Property

    Features
    • Levels: Two
    • Stories: 2
    • Patio & porch: Open Porch/Balcony, Deck
    • Has private pool: Yes
    • Pool features: In Ground
    • Fencing: Privacy
    • Water view: None
    • Waterfront features: None, Dockage: None
    Lot
    • Size: 3,484.8 Square Feet
    • Dimensions: 44 x 80
    • Features: Less Than 1/4 Acre
    Details
    • Parcel number: 00006360000000
    • Zoning: HNC
    • Zoning description: (1-3) Hist Nghborhd Comml 1 - 3 Coastal Med

    Construction

    Type & style
    • Home type: MultiFamily
    • Property subtype: Duplex, Multi Family
    • Attached to another structure: Yes
    Materials
    • Combo Construction
    • Roof: Metal
    Condition
    • Year built: 2020

    Utilities & green energy

    • Sewer: Municipal Sewer, Public Sewer
    • Utilities for property: FKAA, Cable Connected

    Community & HOA

    Community
    • Security: Smoke Detector(s)
    • Subdivision: Old Town - Unlisted (1.0)
    HOA
    • Has HOA: No
    • Services included: None
    Location
    • Region: Key West

    Financial & listing details

    • Price per square foot: $1,944/sqft
    • Annual tax amount: $26,522
    • Date on market: 4/8/2025
    Get pre-qualifiedBe ready to make an offer.
    Connect with an agentGet info on this home, tour, and more.
    Calculate monthly paymentSee if you can afford this home.

    Estimated market value

    Not available

    Estimated sales range

    Not available

    Not available

    Price history

    Price history
    DateEventPrice
    12/9/2025Price change$5,850,000-10%$1,944/sqft
    Source: FLKMLS #614546 Report a problem
    4/8/2025Listed for sale$6,500,000$2,159/sqft
    Source: FLKMLS #614546 Report a problem

    Public tax history

    Public tax history
    Tax history is unavailable.

    BuyAbility℠ payment

    Est. payment
    $35,291/mo
    Principal & interest
    $29246
    Property taxes
    $3997
    Home insurance
    $2048

      Climate risks

      Neighborhood: Historic Seaport

      Nearby schools

      GreatSchools rating

      Similar homes

      Skip to the end of the carouselSkip to the beginning of the carousel
      • Loading
      • Loading