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    New Castle County, DE Office Buildings for Sale

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    Wilmington, DE Dover, DE Milford, DE
    29 results
    Versatile Office Building with Parking
    $950,000
    0.34 Acres
    Versatile Office Building with Parking

    2400 W 4TH ST, Wilmington, DE 19805

    Multi-tenant office building with private parking in Wilmington, DE.
    • Centrally located with a versatile layout suitable for various professional uses.
    • Private parking lot, a rare and valuable amenity.
    • Dual entrance configuration allows for flexible occupancy options.
    • Approximately 8,000 square feet of finished office space, plus additional workspace and storage.
    • Well‑maintained property suitable for owner‑occupant or investor.
    Updated: Mar 25
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    Renovated Office Building in Wilmington
    $1,100,000
    0.19 Acres
    Renovated Office Building in Wilmington

    1501 N WALNUT Street, Wilmington, DE 19801

    Two-story office building in prime location with flexible suite arrangements.
    • Prime location: Just five blocks from Rodney Square and steps from the Brandywine River in Wilmington, DE.
    • Fully renovated, move‑in‑ready two‑story office building.
    • Flexible space: Mechanically divided into 4 suites with potential for more, suitable for owner‑users, investors, or growing companies.
    • Income potential: Option to lease additional suites for supplemental income.
    • Parking: Features parking at the rear of the building.
    Updated: Mar 9
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    North Wilmington Commercial Opportunity
    $895,000
    0.40 Acres
    North Wilmington Commercial Opportunity

    Premium commercial property in North Wilmington with high visibility and accessibility.

    2417 SILVERSIDE RD, Wilmington, DE 19810

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    Renovated Office Building in Wilmington
    $1,100,000
    Renovated Office Building in Wilmington

    Fully renovated two-story office building in a prime Wilmington location.

    1501 N WALNUT St, Wilmington, DE 19801

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    Claymont Office Building For Sale
    $459,000
    5,400 SF
    Claymont Office Building For Sale

    Office building with 5400 square feet available for sale.

    3102 W Brandywine Ave, Claymont, DE 19703

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    Fort DuPont Commercial Opportunity
    Contact for pricing
    20,000 SF
    Fort DuPont Commercial Opportunity

    Commercial space in revitalized mixed-use community, Delaware City.

    471 Oak Lane, Delaware City, DE 19706

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    Wilmington Office Building For Sale
    $1,250,000
    Wilmington Office Building For Sale

    Multi-story office building in Wilmington's Central Business District.

    1205 N Orange St, Wilmington, DE 19801

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    Wilmington Commercial Property For Sale
    $2,600,000
    8,712 SF
    Wilmington Commercial Property For Sale

    Three-story commercial property in Wilmington with versatile space.

    715 N KING STREET, Wilmington, DE 19801

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    Premier Newark Business Park
    Contact for pricing
    28,050 SF
    Premier Newark Business Park

    350-acre business park with office spaces in Newark, Delaware.

    100 Lake Drive, Newark, DE 19702

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    Class A Office Space Available
    Contact for pricing
    50,000 SF
    Class A Office Space Available

    Premier office space in North Wilmington with highway access.

    405 Silverside Road, Wilmington, DE 19809

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    Stand Alone Office Building
    $895,000
    8,800 SF
    Stand Alone Office Building

    Stand alone office building near University and Whist Club.

    803 N Broom St, Wilmington, DE

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    Wilmington Opportunity Zone Office Building
    $1,100,000
    10,000 SF
    Wilmington Opportunity Zone Office Building

    Four-story office building in Wilmington's Central Business District.

    716 N Tatnall St, Wilmington, DE

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    Office Building on Limestone Road
    $5,240,560
    17,000 SF
    Office Building on Limestone Road

    17,000 square foot office building for sale.

    5305 Limestone Rd, Wilmington, DE

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    Income-Generating Office/Retail Building For Sale
    $875,000
    7,862 SF
    Income-Generating Office/Retail Building For Sale

    Two-story office/retail building on North Union Street, Wilmington.

    616 N Union St, Wilmington, DE

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    Centerville Office Building For Sale
    Contact for pricing
    10,691 SF
    Centerville Office Building For Sale

    Three-level office building in the heart of Centerville, Delaware.

    5809-5811 Kennett Pike, Wilmington, DE 19807

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    Highly Visible Commercial Property
    $1,500,000
    12,836 SF
    Highly Visible Commercial Property

    Commercial property for sale with high visibility and accessibility.

    4001 Miller Rd, Wilmington, DE 19802, Wilmington, DE 19802

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    Wilmington Office Buildings For Sale
    $575,000
    0.14 Acres
    Wilmington Office Buildings For Sale

    Two adjoining parcels in Wilmington, DE, suitable for commercial or residential.

    825-827 N WASHINGTON STREET, Wilmington, DE 19801

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    Office Building in Newark, DE
    $4,997,000
    30,208 SF
    Office Building in Newark, DE

    30,208 SF office building for sale.

    800 Barksdale Rd, Newark, DE

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    Newark Office/Industrial Building For Sale
    Contact for pricing
    29,750 SF
    Newark Office/Industrial Building For Sale

    29,750 SF office/industrial building in Pencader Corporate Center.

    211 Lake Dr, Newark, DE 19702

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    Two-Building Office Center with Amenities
    Contact for pricing
    100,000 SF
    Two-Building Office Center with Amenities

    Two Class A office buildings with on-site amenities.

    2751 Centerville Rd, Wilmington, DE 19808

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    Corporate Campus in New Castle
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    Corporate Campus in New Castle

    Corporate campus with renovated lobby and convenient highway access.

    10 Corporate Circle, New Castle, DE 19720

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    Corporate Campus Office Building
    Contact for pricing
    Corporate Campus Office Building

    Full-service office building in a corporate campus setting.

    100 Biddle Avenue, Newark, DE 19702

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    Two-Building Office Complex For Sale
    Contact for pricing
    100,000 SF
    Two-Building Office Complex For Sale

    Two four-story office buildings with on-site amenities and ample parking.

    2711 Centerville Road, Wilmington, DE 19808

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    Corporate Campus Office Building
    Contact for pricing
    Corporate Campus Office Building

    Office building in corporate campus setting with ample parking.

    300 Biddle Avenue, Newark, DE 19702

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    New Castle County, DE Office Buildings Investment Opportunities Market Analysis

    Explore 29 office buildings for sale in New Castle County, DE, showcased through 29 active listings on our real estate platform. These investment opportunities span a total of 107,828 square feet of properties for sale, with an estimated market value of $18,766,560.

    Sale prices for office properties in New Castle County, DE start at $459,000, averaging $2,085,173, and reaching up to $5,240,560 — 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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