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    Key Colony Beach, FL
    Duplex

    Key Colony Beach, FL Duplexes for Sale

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    Marathon, FL Conch Key, FL Duck Key, FL No Name Key, FL Islamorada, FL Big Pine Key, FL
    Waterfront Renovated Duplex
    Updated: Apr 4
    Waterfront Renovated Duplex

    Key Colony Beach, FL 33051

    $1,849,000
    2,540 sqft 0.15 AC lot
    Waterfront renovated duplex on Marathon Island MM53 with two full kitchens
    Boat lift: new 15K lbs (2022) with 60 ft deep water dock and extra‑wide canal
    Pool: new heated‑chilled saltwater system (2022) with cool deck concrete patio (2022)
    Two‑level layout: 2BR 2BA upper and 1BR 1.5BA lower, with 7‑day rentals allowed and split rentals
    Upgrades include metal roof (2013), hurricane accordion/metal Bahama shutters (2021), and upgraded electrical (2022)
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    Half Duplex with Dockage
    Updated: Jul 3
    Half Duplex with Dockage

    Key Colony Beach, FL 33051

    $789,000
    900 sqft 0.07 AC lot
    1971‑built half duplex in Key Colony Beach
    30 feet of dockage plus plenty of parking
    Remodeled with granite countertops, tile flooring, and built‑in storage
    Anderson impact entry doors, double‑pane PGT windows, and Low‑E Anderson sliding glass doors
    Ductless heating and ductless cooling
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    Canal-Front Duplex With Pool
    Canal-Front Duplex With Pool

    Key Colony Beach, FL 33051

    $2,845,000
    4,478 sqft 0.19 AC lot

    Canal-front duplex with two units, impact windows and doors, and a heated pool with spa and dockage.

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    Key Colony Duplex with Dockage
    Key Colony Duplex with Dockage

    Key Colony Beach, FL 33051

    $1,700,000
    2,040 sqft 0.19 AC lot

    Well-maintained duplex with exceptional dockage in Key Colony Beach.

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    Waterfront Duplex: Income and Flexibility
    Waterfront Duplex: Income and Flexibility

    Key Colony Beach, FL 33051

    $1,848,000
    2,528 sqft 0.16 AC lot

    Turnkey waterfront duplex generating approximately $100K/year in rental income.

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    Based on your search, we've compiled 9 Potential Opportunities for your consideration. Besides 5 Active listings in Key Colony Beach, FL, we suggest exploring several alternatives: 4 properties in Nearby Cities

    Opportunities in Nearby Cities

    Here are 4 Similar properties we found in Nearby Locations for your consideration.

    Canal-Front Duplex with Two Entrances
    Canal-Front Duplex with Two Entrances

    31032 Hollerich Drive, Big Pine Key, FL 33043

    $899,000
    1,460 sqft 0.12 AC lot

    Waterfront duplex with two 2BR/1BA units, private entrances, updated kitchens, renovated baths, and canal-front outdoor space.

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    Two-Story Duplex with Redevelopment Potential
    Two-Story Duplex with Redevelopment Potential

    329 63 Court Gulf, Marathon, FL 33050

    $500,000
    1,302 sqft 0.24 AC lot

    Two-story duplex on a sizable lot, offering two 1-bedroom units and flexibility for redevelopment subject to approvals.

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    Waterfront Duplex in Sombrero Beach
    Waterfront Duplex in Sombrero Beach

    17-18 Man-O-War Drive, Marathon, FL 33050

    $1,300,000
    1,668 sqft 0.08 AC lot

    Updated waterfront duplex with dock and ocean access in Marathon.

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    Income-Producing Duplex in Big Pine
    Income-Producing Duplex in Big Pine

    1433 Sunset Road, Big Pine Key, FL 33043

    $699,000
    1,924 sqft

    CBS duplex with direct boating access and large lot.

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    Key Colony Beach, FL Duplexes Market Trends and Statistics

    Explore 5 duplexes for sale in Key Colony Beach, FL, showcased through 5 active listings on our real estate platform. These investment opportunities span a total of 12,486 square feet of properties for sale, with an estimated market value of $9,031,000.

    Sale prices for duplexes in Key Colony Beach, FL start at $789,000, averaging $1,806,200, and reaching up to $2,845,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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    Top Commercial Asset Segments

    Commercial property segments ranked by active listings on the market

    Duplexes 5
    Short term rental properties 2

    Demographics Overview

    Population 525
    Median Household Income $94,531
    College Educated 61.4%

    High-Yield Neighborhoods for Investment

    Identify Key Colony Beach submarkets with the highest inventory density on the market and evaluate the average listing prices of real estate assets

    Neighborhood Average Price
    33051 $2.1M

    Listings Trend

    New vs delisted commercial listings in Monroe County

    New Delisted

    Total CRE Inventory on Market (SF)

    Average Property Price per SF

    For-sale pricing trends across core commercial property types in Monroe County

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    Residential Income

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