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    Ontario, OR Office Properties & Spaces for Sale

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    Two Office Buildings on Acreage
    Pending
    $1,600,000
    14,532 SF

    Two Office Buildings on Acreage

    1108 SE 6Th St, Ontario, OR 97914

    Two office buildings with parking on a 3-acre parcel.

    • Two office buildings totaling 14,532 sq ft on separate parcels (1 acre and 2 acre parking lot).
    • Pinnacle Building (6,196 sq ft) includes a LARGE EXECUTIVE SUITE with private bath, conference room, and shop area.
    • Tele‑mate Building (8,336 sq ft) is set up as a call center with private offices and indoor/outdoor break areas.
    • Pinnacle Building is currently leased (lease through 10/25).
    • Both buildings offer conference areas and restrooms.
    Updated: Dec 28, 2025
    View details
    Ontario Office Building For Sale
    $300,000
    3,440 SF

    Ontario Office Building For Sale

    1157 SW 4Th Ave, Ontario, OR 97914

    Four-unit office building in high-traffic Ontario location.

    • Premier location on a busy street with high visibility and an estimated 20,000 cars passing by daily.
    • Income‑producing 4‑unit office building.
    • Flexibility for owner‑occupancy or investment with one tenant currently in place.
    • Each unit includes private office space, bathrooms, and general reception areas.
    • Easy access with 2 entry points.
    Updated: Dec 9, 2025
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    Based on your search, we've compiled 129 Potential Opportunities for your consideration. Besides 2 Active listings in Ontario, OR, we suggest exploring several alternatives: 4 properties in Nearby Cities, and similar 123 Off-Market properties to explore as potential leads

    Explore Opportunities in Nearby Cities

    Here are 4 Similar properties we found in Nearby Locations for your consideration.

    Caldwell Office Building Opportunity
    $925,000
    4,749 SF

    Caldwell Office Building Opportunity

    Well-appointed office building in prime Caldwell location, versatile floor plan.

    Office Building For Sale Or Lease, Caldwell, ID 83605
    View details
    Downtown Caldwell Commercial Buildings For Sale
    $1,050,000

    Downtown Caldwell Commercial Buildings For Sale

    Two adjacent buildings in revitalized downtown Caldwell, ideal for retail/office.

    Retail & Office Buildings For Sale, Caldwell, ID 83605
    View details
    Middleton Commercial Flex Space Available
    $900,000
    3,678 SF

    Middleton Commercial Flex Space Available

    Restaurant, retail, office, industrial, and flex space for sale.

    21863 Thorsten Ave, Middleton, ID 83644
    View details
    Middleton Commercial Flex Space Available
    $6,000,000
    25,000 SF

    Middleton Commercial Flex Space Available

    Restaurant, retail, office, industrial, and flex spaces for sale.

    21672 Thorsten Ave, Middleton, ID 83644
    View details

    Explore Off-Market Properties in Ontario, OR

    Consider similar Off-Market properties in Ontario, OR. 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.

    787 7th Pl

    787 7th Pl

    OFFICE (GENERAL) • 3,044 SF
    Value Estimation
    $320,000
    787 7th Pl, Ontario, OR 97914-3262
    View details
    992 Idaho Ave

    992 Idaho Ave

    OFFICE (GENERAL) • 4,060 SF
    Value Estimation
    $225,000
    992 Idaho Ave, Ontario, OR 97914-2111
    View details
    19 6th St

    19 6th St

    OFFICE (GENERAL) • 1,284 SF
    Value Estimation by Request
    19 6th St, Ontario, OR 97914-2220
    View details
    434 Idaho Ave

    434 Idaho Ave

    OFFICE (GENERAL) • 936 SF
    Value Estimation
    $60,000
    434 Idaho Ave, Ontario, OR 97914-2347
    View details
    309 3rd Ave

    309 3rd Ave

    OFFICE (GENERAL) • 1,126 SF
    Value Estimation by Request
    309 3rd Ave, Ontario, OR 97914-2553
    View details
    335 13th St

    335 13th St

    MEDICAL BUILDING • 3,168 SF
    Value Estimation
    $325,000
    335 13th St, Ontario, OR 97914-4547
    View details
    933 30th St

    933 30th St

    OFFICE (GENERAL) • 2,024 SF
    Value Estimation
    $265,000
    933 30th St, Ontario, OR 97914-4627
    View details
    2514 4th Ave

    2514 4th Ave

    MEDICAL BUILDING • 2,880 SF
    Value Estimation
    $405,000
    2514 4th Ave, Ontario, OR 97914-1832
    View details
    40 Oregon St

    40 Oregon St

    OFFICE (GENERAL) • 1,740 SF
    Value Estimation
    $225,000
    40 Oregon St, Ontario, OR 97914-2806
    View details
    347 Idaho Ave

    347 Idaho Ave

    MEDICAL BUILDING • 1,754 SF
    Value Estimation
    $315,000
    347 Idaho Ave, Ontario, OR 97914-2344
    View details
    93 4th Ave

    93 4th Ave

    OFFICE (GENERAL) • 1,380 SF
    Value Estimation
    $230,000
    93 4th Ave, Ontario, OR 97914-2757
    View details
    70 3rd Ave

    70 3rd Ave

    OFFICE (GENERAL) • 4,001 SF
    Value Estimation
    $320,000
    70 3rd Ave, Ontario, OR 97914-2722
    View details
    3814 Clark Blvd

    3814 Clark Blvd

    OFFICE (GENERAL) • 2,130 SF
    Value Estimation by Request
    3814 Clark Blvd, Ontario, OR 97914-8740
    View details
    380 3rd St

    380 3rd St

    OFFICE (GENERAL) • 4,480 SF
    Value Estimation
    $345,000
    380 3rd St, Ontario, OR 97914-2720
    View details
    36 Oregon St

    36 Oregon St

    OFFICE (GENERAL) • 1,857 SF
    Value Estimation
    $225,000
    36 Oregon St, Ontario, OR 97914-2806
    View details
    351 1st St

    351 1st St

    OFFICE (GENERAL) • 1,305 SF
    Value Estimation
    $350,000
    351 1st St, Ontario, OR 97914-2707
    View details
    2449 4th Ave

    2449 4th Ave

    OFFICE (GENERAL) • 5,929 SF
    Value Estimation by Request
    2449 4th Ave, Ontario, OR 97914-1829
    View details
    255 4th Ave

    255 4th Ave

    OFFICE (GENERAL) • 947 SF
    Value Estimation by Request
    255 4th Ave, Ontario, OR 97914-2748
    View details
    2327 4th Ave

    2327 4th Ave

    MEDICAL BUILDING • 14,046 SF
    Value Estimation
    $515,000
    2327 4th Ave, Ontario, OR 97914-1851
    View details
    702 Sunset Dr

    702 Sunset Dr

    MEDICAL BUILDING • 18,249 SF
    Value Estimation by Request
    702 Sunset Dr, Ontario, OR 97914-3121
    View details
    1217 4th Ave

    1217 4th Ave

    MEDICAL BUILDING • 10,924 SF
    Value Estimation by Request
    1217 4th Ave, Ontario, OR 97914
    View details
    187 Oregon St

    187 Oregon St

    OFFICE (GENERAL) • 2,500 SF
    Value Estimation
    $230,000
    187 Oregon St, Ontario, OR 97914-2442
    View details

    Ontario, OR Office Properties & Spaces Investment Opportunities Market Analysis

    Explore 125 office properties & spaces for sale in Ontario, OR on our real estate platform. These investment opportunities span a total of 1,697,483 square feet of properties for sale, with an estimated market value of $35,325,000.

    Prices for office spaces in Ontario, OR start at $55,000, averaging $360,459, and reaching up to $2,330,000 — 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 Properties & Spaces for Sale Near Ontario, OR

    Popular Searches in Ontario, OR

    Most Searched ZIP Codes in Ontario, OR

    • 97914

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