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    Key Colony Beach, FL
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    Key Colony Beach, FL Duplexes for Sale

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    Marathon, FL Conch Key, FL Duck Key, FL
    Waterfront Duplex with Rental Potential
    $1,849,000
    2,540 SF

    Waterfront Duplex with Rental Potential

    Key Colony Beach, FL 33051

    Renovated waterfront duplex in Key Colony Beach with rental income.

    • Waterfront duplex with deep water dockage (60 ft), new 15K lbs boat lift (2022), and extra‑wide canal.
    • Excellent rental income opportunity with 7‑day rentals allowed.
    • New (2022) heated and chilled saltwater pool with cool deck.
    • Located in Key Colony Beach, a NO HOA municipality, with access to amenities.
    • Extensive upgrades including a new roof (2013), hurricane shutters (2021), upgraded electrical system (2022), mini‑split AC (2021), flooring, doors, and windows.
    Updated: Apr 4
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    Canal-Front Duplex with Rental History
    $2,995,000
    4,478 SF

    Canal-Front Duplex with Rental History

    Key Colony Beach, FL 33051

    7-bedroom, 7-bath duplex with income potential in Key Colony.

    • Canal‑front property with 75 feet of concrete dockage and quick boating access to the Atlantic Ocean and the Gulf of Mexico.
    • Legal duplex with interior lockout offers flexibility as a single‑family home or two separate living spaces with proven income potential as an active vacation rental.
    • Features a heated pool, spa, and covered poolside lanai for outdoor enjoyment.
    • Includes 7 bedrooms and 7 bathrooms, with four ensuite bedrooms and two primary suites overlooking the water.
    • Recent upgrades include complete concrete spalling repairs and a fresh exterior repaint.
    Updated: Dec 22, 2025
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    Key Colony Duplex with Dockage
    $1,700,000
    2,040 SF

    Key Colony Duplex with Dockage

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

    Key Colony Beach, FL 33051
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    Waterfront Duplex: Income and Flexibility
    $1,848,000
    2,528 SF

    Waterfront Duplex: Income and Flexibility

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

    Key Colony Beach, FL 33051
    View details
    Based on your search, we've compiled 8 Potential Opportunities for your consideration. Besides 4 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.

    Two-Story Duplex in Marathon
    $675,000
    1,302 SF

    Two-Story Duplex in Marathon

    Two-story duplex on a large lot in Marathon, Florida.

    329 63 Court Gulf, Marathon, FL 33050
    View details
    Income Producing Duplex in Big Pine
    $699,000
    1,924 SF

    Income Producing Duplex in Big Pine

    Income-generating duplex with boating access in Big Pine Key.

    1433 Sunset Road, Big Pine Key, FL 33043
    View details
    Waterfront Duplex in Sombrero Beach
    $1,300,000
    1,668 SF

    Waterfront Duplex in Sombrero Beach

    Updated waterfront duplex with dock and ocean access in Marathon.

    17-18 Man-O-War Drive, Marathon, FL 33050
    View details
    Income-Producing Duplex in Big Pine
    $699,000
    1,924 SF

    Income-Producing Duplex in Big Pine

    CBS duplex with direct boating access and large lot.

    1433 Sunset Road, Big Pine Key, FL 33043
    View details

    Key Colony Beach, FL Duplexes Investment Opportunities Market Analysis

    Explore 4 duplexes for sale in Key Colony Beach, FL, showcased through 4 active listings on our real estate platform. These investment opportunities span a total of 11,586 square feet of properties for sale, with an estimated market value of $8,392,000.

    Sale prices for duplexes in Key Colony Beach, FL start at $1,700,000, averaging $2,098,000, and reaching up to $2,995,000 — 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

    Duplexes 4
    Short term rental properties 3

    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 median listing prices of real estate assets

    Neighborhood Average Price
    33051 $2.1M

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