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    Union County, NJ Office Buildings for Sale

    8 results
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    Downtown Commercial Building Near Train
    Pending
    $799,900
    4,000 SF

    Downtown Commercial Building Near Train

    334 North Ave, Garwood, NJ 07027

    Free-standing commercial building in downtown Garwood near the train station.

    • Unbeatable downtown location directly opposite the Garwood train station.
    • 4000 sq ft building with potential for multiple tenants or uses.
    • Off‑street private parking lot that accommodates 10+ cars.
    • Central Business (C‑B) zoning allows for retail, offices, or apartments (confirm with Borough).
    • Recently updated 2nd floor with new flooring and paint.
    Updated: Oct 18, 2025
    View details
    Roselle Park Office/Mixed-Use Building
    $1,499,900
    5,272 SF

    Roselle Park Office/Mixed-Use Building

    441 E Westfield Ave, Roselle Park, NJ 07204

    Two-story, 5,272 sq ft building in prime Roselle Park location.

    • Prime location on Westfield Avenue with excellent visibility and high traffic.
    • Versatile 5,272 sq ft building suitable for offices, mixed‑use, or up to 3 residential units, commercial spaces and medical offices.
    • Zoned to permit up to 3 residential units in addition to commercial spaces and medical offices.
    • Ample off‑street parking spaces.
    • Conveniently located near major forms of transportation.
    Updated: Aug 27, 2025
    View details
    North Plainfield Office Building
    Contact for pricing
    8,200 SF

    North Plainfield Office Building

    8,200 SF office building with high visibility and parking.

    190 Greenbrook Rd, North Plainfield, NJ 07060
    View details
    Prime Cranford Office Building
    $785,000
    2,100 SF

    Prime Cranford Office Building

    Standalone building in Cranford's growing downtown business corridor.

    10 South Ave, Cranford, NJ 07016
    View details
    Downtown Commercial Redevelopment Opportunity
    Contact for pricing
    12,765 SF

    Downtown Commercial Redevelopment Opportunity

    Four buildings totaling 12,765 SF on approximately 1 acre.

    20 Franklin Pl, Summit, NJ 07901
    View details
    Summit Office Building For Sale
    Contact for pricing
    5,924 SF

    Summit Office Building For Sale

    Office building with 5,924 square feet available for sale.

    47 River Rd, Summit, NJ 07901
    View details
    Union Office Building For Sale
    Contact for pricing
    12,534 SF

    Union Office Building For Sale

    Office building with 12,534 square feet of space.

    1767 Us Highway 22 W, Union, NJ 07083
    View details
    Freestanding Brick and Stone Building
    $625,000
    1,800 SF

    Freestanding Brick and Stone Building

    Professional building with off-street parking; first floor delivered vacant.

    1790 Front St, Scotch Plains, NJ 07076
    View details
    Based on your search, we've compiled 289 Potential Opportunities for your consideration. Besides 8 Active listings in Union County, NJ, we suggest exploring several alternatives: similar 281 Off-Market properties to explore as potential leads

    Explore Off-Market Properties in Union County, NJ

    Consider similar Off-Market properties in Union County, NJ. 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.

    300400 Connell Dr

    300400 Connell Dr

    OFFICE BUILDING • 47.69 Acres
    Value Estimation
    $550,000
    300400 Connell Dr, Berkeley Heights, NJ 07922
    View details
    300-340 Allen St

    300-340 Allen St

    OFFICE BUILDING • 12,536 SF
    Value Estimation
    $3,155,000
    300-340 Allen St, Elizabeth, NJ 07202
    View details
    283 Broad St

    283 Broad St

    OFFICE BUILDING • 5,017 SF
    Value Estimation by Request
    283 Broad St, Elizabeth, NJ 07208-3702
    View details
    433 Broad St, Unit 441

    433 Broad St, Unit 441

    OFFICE BUILDING • 6,976 SF
    Value Estimation
    $620,000
    433 Broad St, Elizabeth, NJ 07208-3300
    View details
    39 Broad St, Unit 49

    39 Broad St, Unit 49

    OFFICE BUILDING • 1,760,000 SF
    Value Estimation by Request
    39 Broad St, Elizabeth, NJ 07201-2205
    View details
    757 Broad St, Unit 61

    757 Broad St, Unit 61

    OFFICE BUILDING • 2,884 SF
    Value Estimation by Request
    757 Broad St, Elizabeth, NJ 07208-2482
    View details
    623 Broadway, Unit 633

    623 Broadway, Unit 633

    OFFICE BUILDING • 4,377 SF
    Value Estimation by Request
    623 Broadway, Elizabeth, NJ 07206-1357
    View details
    813-815 Elizabeth Ave, Unit 815

    813-815 Elizabeth Ave, Unit 815

    OFFICE BUILDING • 12,378 SF
    Value Estimation
    $875,000
    813-815 Elizabeth Ave, Elizabeth, NJ 07201-2708
    View details
    953-955 Elizabeth Ave, Unit 955

    953-955 Elizabeth Ave, Unit 955

    OFFICE BUILDING • 7,786 SF
    Value Estimation
    $575,000
    953-955 Elizabeth Ave, Elizabeth, NJ 07201-2645
    View details
    134-136 Elmora Ave, Unit 136

    134-136 Elmora Ave, Unit 136

    OFFICE BUILDING • 6,096 SF
    Value Estimation
    $510,000
    134-136 Elmora Ave, Elizabeth, NJ 07202-1148
    View details
    448 Rahway Ave

    448 Rahway Ave

    OFFICE BUILDING • 2,674 SF
    Value Estimation by Request
    448 Rahway Ave, Elizabeth, NJ 07202-2338
    View details
    122 Rahway Ave, Unit 134

    122 Rahway Ave, Unit 134

    OFFICE BUILDING • 3,324 SF
    Value Estimation
    $835,000
    122 Rahway Ave, Elizabeth, NJ 07202-2011
    View details
    500-504 Westfield Ave, Unit 504

    500-504 Westfield Ave, Unit 504

    OFFICE BUILDING • 3,800 SF
    Value Estimation by Request
    500-504 Westfield Ave, Elizabeth, NJ 07208-1642
    View details
    613 Westminster Ave, Unit 619

    613 Westminster Ave, Unit 619

    OFFICE BUILDING • 2,917 SF
    Value Estimation by Request
    613 Westminster Ave, Elizabeth, NJ 07208-2208
    View details
    722 Division St, Unit 734

    722 Division St, Unit 734

    OFFICE BUILDING • 14,116 SF
    Value Estimation
    $2,535,000
    722 Division St, Elizabeth, NJ 07201-2005
    View details
    15 High St

    15 High St

    OFFICE BUILDING • 13,941 SF
    Value Estimation
    $3,505,000
    15 High St, Elizabeth, NJ 07202
    View details

    Union County, NJ Office Buildings Investment Opportunities Market Analysis

    Explore 289 office buildings for sale in Union County, NJ, showcased through 8 active listings on our real estate platform. These investment opportunities span a total of 832,335,911 square feet of properties for sale, with an estimated market value of $85,339,800.

    Sale prices for office properties in Union County, NJ start at $150,000, averaging $797,568, and reaching up to $6,275,000 — 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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