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    Knox County, ME Duplexes for Sale

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    20 properties
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    Historic Duplex with Barn
    Updated: Jul 9
    Historic Duplex with Barn

    77 Main Street, Rockport, ME 04856

    $1,125,000
    2,762 sqft 0.94 AC lot
    2,762 square feet configured as two residential units
    0.94‑acre level lot at 77 Main Street, Rockport, ME 04856
    1890 Greek Revival design with wood floors and period architectural details
    Separate entrances and parking for both units
    Newer roof, replacement windows, and spray‑foamed foundation
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    Contemporary Duplex with In-Law Suite
    Updated: Jul 7
    Contemporary Duplex with In-Law Suite

    13 Sawpit Road, Appleton, ME 04862

    $360,000
    2,382 sqft 1.34 AC lot
    2,382‑square‑foot contemporary duplex built in 2023
    Four bedrooms and 2.5 bathrooms
    Separate‑entry in‑law suite with living space and private bath
    1.34‑acre lot combining cleared yard and wooded area
    Private well, private sewer, and private driveway
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    Updated Duplex with Water Views
    Updated Duplex with Water Views

    122 Camden Street, Rockland, ME 04841

    $325,000
    1,540 sqft 0.15 AC lot

    Two separate one-bedroom units feature water views and recent building improvements.

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    Victorian Duplex With Office Space
    Victorian Duplex With Office Space

    13 Wood St, Camden, ME 04843

    $849,000
    2,454 sqft

    Historic two-unit property with office space, a backyard, lookout tower, and two driveways near Camden’s waterfront.

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    Renovated Duplex with Deck
    Renovated Duplex with Deck

    20 Chestnut Street, Rockland, ME 04841

    $365,000
    2,728 sqft 0.23 AC lot

    Two living units include a renovated primary residence and a separate one-bedroom apartment.

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    Up-and-Down Duplex
    Up-and-Down Duplex

    1032 Commercial Street, Rockport, ME 04856

    $335,000
    1,346 sqft 0.42 AC lot

    Waterfront duplex with separate tenant utilities, off-street parking, and a sizable yard near Glen Cove.

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    Village Mixed-Use Two-Unit Property
    Village Mixed-Use Two-Unit Property

    30 Burkett Road, Union, ME 04862

    $325,000
    1,824 sqft 0.10 AC lot

    Two-unit configuration combines a leased main-floor commercial space with an upstairs apartment in Union’s central business district.

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    Historic Two-Unit Greek Revival
    Historic Two-Unit Greek Revival

    77 Main St, Rockport, ME 04856

    $1,125,000
    2,762 sqft

    Two separately entered units include dedicated parking and support flexible occupancy arrangements.

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    Duplex with Updated Exterior
    Duplex with Updated Exterior

    30 - 32 Granite Street, Rockland, ME 04841

    $439,000
    2,800 sqft 0.12 AC lot

    Two matching residences offer flexible layouts, private access, and off-street parking near Rockland’s downtown amenities.

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    Duplex with Off-Street Parking
    Duplex with Off-Street Parking

    323 Broadway, Rockland, ME 04841

    $379,000
    1,881 sqft 0.25 AC lot

    Two-level residential property with a spacious yard, public utilities, and currently occupied units.

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    Renovated Duplex with Apartment
    Renovated Duplex with Apartment

    20 Chestnut St, Rockland, ME 04841

    $365,000
    2,728 sqft 0.23 AC lot

    Two living units include a three-bedroom main residence and a private-entry one-bedroom apartment.

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    Duplex With Boat Storage
    Duplex With Boat Storage

    1257 N Pond Road, Warren, ME 04864

    $299,000
    3,888 sqft 15.00 AC lot

    Three floors combine two residential apartments with substantial storage space on a wooded Shoreland-zoned parcel.

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    Two-Unit Duplex with Off-Street Parking
    Two-Unit Duplex with Off-Street Parking

    323 Broadway, Rockland, ME 04841

    $379,000
    1,881 sqft

    Well-maintained two-level duplex near downtown shopping, dining, theater, and galleries, with a spacious yard and current occupancy.

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    Updated Water-View Duplex
    Updated Water-View Duplex

    122 Camden St, Rockland, ME 04841

    $325,000
    1,540 sqft

    Two one-bedroom residences with recent building improvements and separate living units in Rockland.

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    Two-Unit Property with 3-Bay Garage
    Two-Unit Property with 3-Bay Garage

    350 Main St, Warren, ME 04864

    $340,000
    2,000 sqft

    Historic two-unit property with character details and a separate garage-barn offering flexible workspace and storage potential.

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    Two-Unit Duplex with Private Parking
    Two-Unit Duplex with Private Parking

    3032 30 - 32 Granite St, Rockland, ME 04841

    $439,000
    2,800 sqft

    In-town property offers separate entrances, flexible bedroom layouts, and updated exterior improvements for tenant convenience.

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    Duplex with Walkout Basement
    Duplex with Walkout Basement

    1032 Commercial St, Rockport, ME 04856

    $335,000
    1,346 sqft

    Up-and-down layout with a recently painted second-floor apartment, large yard, and concrete slab for a garage or ADU.

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    Four-Bedroom Duplex
    Four-Bedroom Duplex

    30-32 Granite Street, Rockland, ME 04841

    $439,000
    2,800 sqft

    Two matching residential units offer flexible layouts, private parking, and separate entrances in an in-town setting.

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    Duplex With Water Views
    Duplex With Water Views

    122 Camden Street, Rockland, ME 04841

    $325,000
    1,540 sqft

    Two separate one-bedroom apartments with recent building improvements and water views in Rockland.

    View details
    Duplex with Mirror-Image Units
    Duplex with Mirror-Image Units

    30 - 32 Granite Street, Rockland, ME 04841

    $439,000
    2,800 sqft

    Two residential units offer flexible living arrangements, private parking, and convenient access to downtown amenities.

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    Based on your search, we've compiled Potential Opportunities for your consideration. Besides 20 Active Listings in Knox County, ME

    Knox County, ME Duplexes Market Trends and Statistics

    Explore 20 duplexes for sale in Knox County, ME, showcased through 20 active listings on our real estate platform. These investment opportunities span a total of 45,802 square feet of properties for sale, with an estimated market value of $9,312,000.

    Sale prices for duplexes in Knox County, ME start at $299,000, averaging $465,600, and reaching up to $1,125,000 — 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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    Featured Knox County Real Estate Agencies

    Realmo connects you with licensed Knox County CRE brokers providing property specifications, local market pricing, and commercial transaction underwriting support.

    Camden Real Estate Company
    43 Elm St Camden, ME 04843
    Phone: 12072366171
    www.camdenre.com
    Cates Real Estate
    313 Main Street Rockland, ME 04841
    Phone: 12077015600
    www.catesre.com
    Camden Coast Real Estate
    80 Elm Street Camden, ME 04843
    Phone: 12072361111
    camdencoast.com

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