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    New Castle County, DE Office Buildings for Sale

    26 results
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    Colonial Residence in Summit Pointe
    $995,000
    4,175 SF

    Colonial Residence in Summit Pointe

    258 Dillon Cir, Middletown, DE 19709

    Luxurious 4,175 sq ft home built in 2023.

    • Built in 2023: Modern construction and updated features
    • 4,175 sq ft: Spacious layout with ample room for living and entertaining
    • Gourmet Kitchen: Features a large island, stainless steel appliances, and generous pantry
    • Luxurious Primary Suite: Includes a sitting room, walk‑in closet, and en‑suite bath with soaking tub and separate shower
    • Unfinished Full Basement: Walkout stairs and rough‑in for a future bathroom, offering customization potential
    Updated: Dec 22, 2025
    View details
    North Wilmington Commercial Opportunity
    $895,000
    0.40 Acres

    North Wilmington Commercial Opportunity

    2417 Silverside Rd, Wilmington, DE 19810

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

    • Prime location off Foulk and Silverside Roads in North Wilmington with high visibility and accessibility.
    • Ample private parking with space for up to 20 vehicles.
    • Five well‑appointed offices, including four versatile suites and a spacious private main office.
    • Newer roof (installed in the last 5 years).
    • Recent system upgrades.
    Updated: Oct 16, 2025
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    Office Building on College Avenue
    $695,000
    2,955 SF

    Office Building on College Avenue

    Office building for sale on busy S. College Avenue.

    907 S College Ave, Newark, DE 19713
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    Renovated Office Building with Parking
    Contact for pricing
    97,878 SF

    Renovated Office Building with Parking

    97,878 SF renovated office building with ample parking.

    4041 Ogletown Rd, Newark, DE 19713
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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 19805
    View details
    Wilmington Office Building For Sale
    $1,250,000
    7,200 SF

    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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    Corporate Campus Office Building
    Contact for pricing

    Corporate Campus Office Building

    Office building in corporate campus with ample parking.

    200 Biddle Ave, Newark, DE 19702
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    Wilmington Office Building For Sale
    Contact for pricing
    5,760 SF

    Wilmington Office Building For Sale

    5,760 SF office building in Wilmington's thriving downtown core.

    921 N Orange St, Wilmington, DE 19801
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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 Rd, Wilmington, DE 19808
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    Corporate Campus in New Castle
    Contact for pricing

    Corporate Campus in New Castle

    Corporate campus with renovated lobby and convenient highway access.

    10 Corporate Cir, New Castle, DE 19720
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    North Wilmington Commercial Redevelopment Site
    $895,000
    2,000 SF

    North Wilmington Commercial Redevelopment Site

    Commercial redevelopment site in North Wilmington's Brandywine corridor.

    1809 Marsh Rd, Wilmington, DE 19810
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    Montchanin Office Complex For Sale
    Contact for pricing
    11,500 SF

    Montchanin Office Complex For Sale

    Two-building office complex in historic Montchanin, Delaware.

    100 W Rockland Rd, Montchanin, DE 19710
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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 Ave, Newark, DE 19702
    View details
    Newark Office Building For Sale
    $890,000
    6,000 SF

    Newark Office Building For Sale

    Commercial building with office space and long-term lease.

    1003 S Chapel St, Newark, DE 19702
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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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    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 19808
    View details
    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 19801
    View details
    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 19805
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    Versatile Flex Buildings For Sale
    Contact for pricing
    76,139 SF

    Versatile Flex Buildings For Sale

    Two flex buildings on 11.9 acres in New Castle, DE.

    31 Reads Way, New Castle, DE 19720
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    Wilmington Office Building For Sale
    $550,000
    4,180 SF

    Wilmington Office Building For Sale

    Investment opportunity in Wilmington's Central Business District.

    1701 N Market St, Wilmington, DE 19802
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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 Ave, Newark, DE 19702
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    Main Street Newark Office Space
    $2,500,000
    11,578 SF

    Main Street Newark Office Space

    11,578 SF office space in the heart of Newark.

    77 E Main St, Newark, DE 19711
    View details
    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 19711
    View details

    New Castle County, DE Office Buildings Investment Opportunities Market Analysis

    Explore 26 office buildings for sale in New Castle County, DE, showcased through 26 active listings on our real estate platform. These investment opportunities span a total of 39,640 square feet of properties for sale, with an estimated market value of $1,890,000.

    Prices for office properties in New Castle County, DE start at $895,000, averaging $945,000, and reaching up to $995,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you have the most current data.

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    Browse Office buildings for Sale Near New Castle, DE

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