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    Knox County, ME Office Buildings for Sale

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    Portland, ME Lewiston, ME Bangor, ME
    Route One Commercial Building
    $540,000
    8,098 SF

    Route One Commercial Building

    731 Commercial Street, Rockport, ME 04856

    Commercial building with office spaces and residential unit in Rockport.

    • Prime Route One location, half a mile from Pen Bay Medical Center and close to Rockland and Camden.
    • Multi‑faceted commercial building with three office spaces and one residential unit.
    • Existing leases in place providing immediate income.
    • ADA compliant with front and back parking.
    • Four separate 200 amp electrical services.
    Updated: Apr 1
    View details
    Modern Multi-Flex Commercial Building
    $529,000
    5,040 SF

    Modern Multi-Flex Commercial Building

    485 Commercial Street, Rockport, ME 4856

    Versatile commercial building with high-visibility location and modern flex space.

    • Prime high‑visibility location on Commercial Street with strong traffic flow.
    • Modern, multi‑flex building suitable for a wide range of commercial or retail uses.
    • Convenient accessibility from Rockland, Union, Camden, and Belfast.
    • Spacious, high‑ceiling warehouse and front‑facing offices.
    • Includes six private offices, a conference room, receptionist's office, kitchen, and four restrooms.
    Updated: Nov 21, 2025
    View details
    Historic Rockland Building For Sale
    $999,000
    6,500 SF

    Historic Rockland Building For Sale

    Historic three-story building in downtown Rockland undergoing complete transformation.

    429 Main St, Rockland, ME 4841
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    Two Office Buildings on Elm
    $1,575,000
    5,378 SF

    Two Office Buildings on Elm

    Two office buildings on 1.2 acres with parking.

    73 Elm Street, Camden, ME 4843
    View details
    Based on your search, we've compiled 106 Potential Opportunities for your consideration. Besides 4 Active listings in Knox County, ME, we suggest exploring several alternatives: similar 98 Off-Market properties to explore as potential leads, plus 4 Land Listings that present a potential for development.

    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.

    Land For Sale, Castine, ME
    $795,000
    1.00 Acre

    Land For Sale, Castine, ME

    One acre of land for sale in Castine, Maine.

    M17 L15 Perkins Street, Castine, ME 04421
    View details
    Improved Lot in Unity, Maine
    $70,000
    54,450.00 Acres

    Improved Lot in Unity, Maine

    1.25 acre lot with power, water, and septic design.

    M12 L31-3 Stage Coach Road, Unity, ME 04988
    View details
    Cleared Lot in Unity, Maine
    $70,000
    1.25 Acres

    Cleared Lot in Unity, Maine

    1.25-acre lot with power, water, and approved septic.

    M12 L31-3 Stage Coach Road, Unity, ME 04988
    View details
    Augusta Land Ready to Develop
    $199,000
    51.00 Acres

    Augusta Land Ready to Develop

    50+ acre parcel near I-95 and MaineGeneral Medical Center.

    450 W River Road, Augusta, ME 04330
    View details

    Explore Off-Market Properties in Knox County, ME

    Consider similar Off-Market properties in Knox County, ME. 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.

    30 School St

    30 School St

    OFFICE BUILDING • 9,160 SF
    Value Estimation
    $625,000
    30 School St, Rockland, ME 04841-2800
    View details
    38 Curtis Ave

    38 Curtis Ave

    OFFICE BUILDING • 3,428 SF
    Value Estimation by Request
    38 Curtis Ave, Camden, ME 04843-2008
    View details
    77 Park St

    77 Park St

    OFFICE BUILDING • 2,400 SF
    Value Estimation by Request
    77 Park St, Rockland, ME 04841-2846
    View details
    231 Park St

    231 Park St

    OFFICE BUILDING • 4,990 SF
    Value Estimation by Request
    231 Park St, Rockland, ME 04841-2127
    View details
    18 Talbot Ave

    18 Talbot Ave

    OFFICE BUILDING • 3,456 SF
    Value Estimation by Request
    18 Talbot Ave, Rockland, ME 04841-2959
    View details
    59 Main St

    59 Main St

    OFFICE BUILDING • 2,892 SF
    Value Estimation by Request
    59 Main St, Rockland, ME 04841-3802
    View details
    247 Commercial St

    247 Commercial St

    OFFICE BUILDING • 6,114 SF
    Value Estimation
    $1,060,000
    247 Commercial St, Rockport, ME 04856-5909
    View details
    107 Elm St

    107 Elm St

    OFFICE BUILDING • 1,905 SF
    Value Estimation by Request
    107 Elm St, Camden, ME 04843-1906
    View details
    5 Farwell Dr

    5 Farwell Dr

    OFFICE BUILDING • 784 SF
    Value Estimation by Request
    5 Farwell Dr, Rockland, ME 04841-6313
    View details
    49 Mechanic St

    49 Mechanic St

    OFFICE BUILDING • 4,620 SF
    Value Estimation by Request
    49 Mechanic St, Camden, ME 04843-1807
    View details
    21 Elm St

    21 Elm St

    OFFICE BUILDING • 17,303 SF
    Value Estimation
    $1,630,000
    21 Elm St, Camden, ME 04843-1902
    View details
    27 Washington St

    27 Washington St

    OFFICE BUILDING • 3,037 SF
    Value Estimation by Request
    27 Washington St, Camden, ME 04843-1739
    View details
    30 Un St

    30 Un St

    OFFICE BUILDING • 1,892 SF
    Value Estimation
    $645,000
    30 Un St, Camden, ME 04843-2016
    View details
    3208 Camden Rd

    3208 Camden Rd

    OFFICE BUILDING • 1,344 SF
    Value Estimation by Request
    3208 Camden Rd, Warren, ME 04864-4124
    View details
    19 Summer St

    19 Summer St

    OFFICE BUILDING • 2,738 SF
    Value Estimation by Request
    19 Summer St, Rockland, ME 04841-2917
    View details
    331 Commercial St

    331 Commercial St

    OFFICE BUILDING • 1,733 SF
    Value Estimation by Request
    331 Commercial St, Rockport, ME 04856-4403
    View details
    724 Commercial St

    724 Commercial St

    OFFICE BUILDING • 2,530 SF
    Value Estimation by Request
    724 Commercial St, Rockport, ME 04856-4201
    View details
    400 Old County Rd

    400 Old County Rd

    OFFICE BUILDING • 2,880 SF
    Value Estimation by Request
    400 Old County Rd, Rockland, ME 04841-5527
    View details
    5 Park Dr

    5 Park Dr

    OFFICE BUILDING • 3,479 SF
    Value Estimation by Request
    5 Park Dr, Rockland, ME 04841-3437
    View details
    48 Washington St

    48 Washington St

    OFFICE BUILDING • 5,108 SF
    Value Estimation by Request
    48 Washington St, Camden, ME 04843-1584
    View details

    Knox County, ME Office Buildings Investment Opportunities Market Analysis

    Explore 102 office buildings for sale in Knox County, ME, showcased through 4 active listings on our real estate platform. These investment opportunities span a total of 2,913,915 square feet of properties for sale, with an estimated market value of $27,625,000.

    Sale prices for office properties in Knox County, ME start at $85,000, averaging $328,869, and reaching up to $1,635,000 — 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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