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For sale
  • $1,250,000

    1911 Seidenberg Ave, Key West, FL 33040

    2beds
    1,119sqft
    : 
    $7,388/mo
    Get pre-qualified
    Multi Family
    Built in 1943
    -- sqft lot
    $1,165,000 Zestimate®
    $1,117/sqft
    $-- HOA

    What's special

    Updated appliancesTwo off-street parking spacesTwo large screened porchesLow-maintenance groundsNew hot water heaterImpact windows upstairsNew ceiling fans
    With only two owners in its history, this well-maintained two-story property presents a rare investment opportunity in Key West. Configured as a legal duplex with two separately metered 1-bedroom, 1-bath units, it offers exceptional flexibility--ideal for investors seeking strong rental potential, business owners looking for employee housing, or owner-occupants wanting to offset costs by renting one unit while living in the other. Set on a 5,000 sq ft lot, the property is surrounded by lush, mature tropical landscaping with a wide variety of plants and palms, creating a private, shaded, treehouse-like setting filled with natural light. Two large screened porches and additional open-air spaces provide ideal indoor-outdoor living, while an outdoor shower enhances the island lifestyle. The home has been thoughtfully updated and well cared for, featuring Mitsubishi mini-split A/C systems in both units, a new hot water heater, new ceiling fans, impact windows upstairs, new gutters, updated appliances, and soft-close cabinetry. Interior finishes include a mix of pine, vinyl, and concrete flooring, along with stainless, Formica, and butcher block countertops. Both units offer full bathrooms with tubs. Additional highlights include two off-street parking spaces, low-maintenance grounds, and multiple windows throughout for abundant natural light and airflow. Located in desirable Midtown East, just minutes from everything Key West has to offer, this is a versatile, income-producing property with strong upside potential.
    121 days
    116
    6

    Zillow last checked:

    Listing updated:

    Listed by:

    Everett H Smith 305-304-2651,

    Ocean Sotheby's International Realty

    Source: FLKMLS,MLS#: 619758MLS Logo

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 2
      • Bathrooms: 2
      • Full bathrooms: 2
      Cooling
      • Wall/Window Unit(s), Ceiling Fans(s)
      Appliances
      • Included: Washer, Dryer, Refrigerator, Range, Oven
      Features
      • Built-in Features
      • Flooring: Vinyl, Wood, Concrete
      Interior area
      • Total structure area: 1,119
      • Total interior livable area: 1,119 sqft

      Property

      Features
      • Patio & porch: Open Porch/Balcony, Deck, Patio, Screened Patio
      • Exterior features: Fruit Tree(s), Rain Gutters
      • Fencing: Fenced,Privacy
      Lot
      • Size: 5,227 Square Feet
      • Dimensions: 50 X 100
      Details
      • Additional structures: Shed(s)
      • Parcel number: 00047280000000
      • Zoning: SF - Single Family

      Construction

      Type & style
      • Home type: MultiFamily
      • Architectural style: Other
      • Property subtype: Multi Family
      Materials
      • Frame
      Condition
      • Updated/Remodeled
      • New construction: No
      • Year built: 1943

      Utilities & green energy

      • Utilities for property: Elect Separate Meter, Cable Available

      Community & HOA

      Community
      • Subdivision: Key West Realty Cos Sub (3.0)
      HOA
      • Has HOA: No
      • Services included: None
      Location
      • Region: Key West

      Financial & listing details

      • Price per square foot: $1,117/sqft
      • Tax assessed value: $733,923
      • Annual tax amount: $7,059
      • Date on market: 5/4/2026

        Estimated market value

        $1,165,000

        $1.11M - $1.22M

        $3,409/mo

        Price history

        DateEventPrice
        5/4/2026Listed for sale$1,250,000+147.5%$1,117/sqft
        Source: FLKMLS #619758 Report a problem
        9/24/2018Sold$505,000$451/sqft
        Source: FLKMLS #581511 Report a problem

        Public tax history

        YearProperty taxesTax assessment
        2025$7,059 +9.1%$713,813 +10%
        2024$6,471 +5.8%$648,921 +10%
        2023$6,116 +10.2%$589,928 +10%
        2022$5,550 +8.3%$536,298 +10%
        2021$5,125 +2.6%$487,544 +4.6%
        2020$4,996 $466,324 +10%
        2019$4,996 +9.2%$423,931 +2.5%
        2018$4,574 +6.5%$413,608 +4.4%
        2017$4,293 +4.7%$396,108 +0.6%
        2016$4,099 +0.4%$393,632 +24.2%
        2015$4,084 $317,015
        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.
        See how much you could borrow to make a competitive offer.

        Climate risks

        Neighborhood: New Town

        Getting around

        73 / 100
        Very Walkable
        23 / 100
        Minimal Transit
        95 / 100
        Biker's Paradise

        Nearby schools

        GreatSchools rating

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