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    Key Colony Beach, FL
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    Key Colony Beach, FL Multifamily Properties 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 13 Potential Opportunities for your consideration. Besides 4 Active listings in Key Colony Beach, FL, we suggest exploring several alternatives: 4 properties in Nearby Cities, and similar 1 Off-Market properties to explore as potential leads, plus 4 Land Listings that present a potential for development.

    Opportunities in Nearby Cities

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

    Waterfront Redevelopment Opportunity in Marathon
    $3,549,000
    6,128 SF

    Waterfront Redevelopment Opportunity in Marathon

    Rare waterfront property with redevelopment potential in Marathon, Florida.

    14 125th Street Gulf, Marathon, FL 33050
    View details
    Waterfront Compound in Lower Matecumbe
    $3,524,000
    3,524 SF

    Waterfront Compound in Lower Matecumbe

    Luxury multi-family property with income potential and resort-style amenities.

    Islamorada, FL 33036
    View details
    Islamorada Waterfront Family Compound
    $3,524,000
    3,524 SF

    Islamorada Waterfront Family Compound

    Luxury multi-family property with income potential and resort-style amenities.

    Islamorada, FL 33036
    View details
    Oceanfront Home on Atlantic
    Contact for pricing
    1,000 SF

    Oceanfront Home on Atlantic

    Oceanfront property with sunrise/sunset views, modern amenities, and rental potential.

    101 11th Street Ocean, Marathon, FL 33050
    View details

    Potential Development Sites for Consideration

    Can't find the perfect fit? These Land listings present an alternative path: the potential to develop a property for your specific goals.

    Important: These AI-suggestions are a starting point, not a guarantee of permitted use. All zoning, permitting, and land use information must be independently verified by you with the appropriate local authorities before making any commitments.

    Gulf Front Estate in Marathon
    $9,950,000
    10,852 SF

    Gulf Front Estate in Marathon

    3.86-acre mixed-use commercial property with highway and water frontage.

    6500-6600 Overseas Highway, Marathon, FL 33050
    View details
    Buildable RV Lot with Views
    $237,500
    0.02 Acres

    Buildable RV Lot with Views

    Buildable RV lot with ocean views and resort amenities.

    6099 Overseas Highway, Marathon, FL 33050
    View details
    Land For Sale
    $299,000

    Land For Sale

    Land available north of US-1, Little Torch, Florida.

    Summerland Key, FL 33042
    View details
    Land in Little Torch Key
    $320,000
    0.10 Acres

    Land in Little Torch Key

    Residential land available in Little Torch Key, Florida.

    27935 Tarpon Terrace, Little Torch Key, FL 33042
    View details

    Off-Market Properties in Key Colony Beach, FL

    Consider similar Off-Market properties in Key Colony Beach, FL. You may contact the owners directly to inquire about their potential intentions to sell. To help you make a strong first impression, we can assist by reaching out to these owners with compelling proposals created using our AI tool.

    480 9 St
    Multifamily properties
    Value Estimation by Request

    480 9 St, Key Colony Beach, FL 33051

    View details

    Key Colony Beach, FL Multifamily Properties Investment Opportunities Market Analysis

    Explore 5 multifamily properties 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 multifamily properties 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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