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    Diamond Bar, CA
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    Diamond Bar, CA Office Units for Lease

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    14 properties
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    Diamond Bar Office Space Available
    Updated: Mar 26
    Diamond Bar Office Space Available

    21680 Gateway Center Dr., #230, Diamond Bar, CA 91765

    $39 SF/Yr
    2,596 sqft
    Office space available
    Two spaces available
    Size range: 2,370 SqFt - 2,596 SqFt
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    Freeway-Visible Diamond Bar Office Space
    Updated: Nov 21, 2025
    Freeway-Visible Diamond Bar Office Space

    1360 Valley Vista Dr., Diamond Bar, CA 91765

    $900/Mo per office
    20,064 sqft
    Freeway‑visible professional office building in Diamond Bar Corporate Center.
    Walking distance to Diamond Bar City Hall, Holiday Inn Hotel, Kaiser Permanente, and city library.
    Numerous eateries off the highway, including popular fast‑food and classic restaurants.
    Common use kitchen, meeting room, and reception area available.
    Diverse tenant mix including Education, Lawyers, Accounting, and Medical‑related offices.
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    Office Unit with Private Offices
    Office Unit with Private Offices

    1300 Valley Vista Dr #205A, Diamond Bar, CA 91765

    $2,200/Mo

    Professional suite near the 57 and 60 freeways with a kitchen area and remodeled restrooms.

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    Office Unit With Private Offices
    Office Unit With Private Offices

    205-2707 S Diamond Bar Blvd, Diamond Bar, CA 91765

    $2,950/Mo

    Flexible professional workspace includes reception, break room, restroom, and central heating and cooling.

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    Office Unit with Private Offices
    Office Unit with Private Offices

    21015 Pathfinder Rd, Diamond Bar, CA 91789

    Contact for pricing
    1,113 sqft

    Office layout combines enclosed rooms with an open work area for day-to-day operations.

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    First-Floor Office Suite
    First-Floor Office Suite

    556 N Diamond Bar Blvd, Diamond Bar, CA 91765

    Contact for pricing
    1,214 sqft

    First-floor office space offering approximately 1,214 square feet of working area in a commercial setting.

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    Second-Floor Office Suite
    Second-Floor Office Suite

    556 N Diamond Bar Blvd, Diamond Bar, CA 91765

    Contact for pricing
    1,225 sqft

    Second-floor office space offered for lease.

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    Diamond Bar Office Space Sublease
    Diamond Bar Office Space Sublease

    1081 Grand Ave, Diamond Bar, CA 91765

    Contact for pricing
    4,668 sqft

    Office space available for sublease in Diamond Bar, CA.

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    Diamond Bar Commercial Office Space
    Diamond Bar Commercial Office Space

    3230 Fallow Field Dr, Diamond Bar, CA 91765

    Contact for pricing
    21,300 sqft

    Commercial office space for lease, suitable for various businesses.

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    First-Floor Office Suite
    First-Floor Office Suite

    3333 S Diamond Canyon Rd, Diamond Bar, CA 91765

    Contact for pricing
    570 sqft

    First-floor office suite in a two-story building with a perimeter office layout and unit renovations underway.

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    Diamond Bar Office Space Available
    Diamond Bar Office Space Available

    3333 South Diamond Canyon Road, Diamond Bar, CA 91765

    Contact for pricing
    17,247 sqft

    Available office space in Diamond Bar, California.

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    Diamond Bar Office Space Available
    Diamond Bar Office Space Available

    1550 Valley Vista Drive, Diamond Bar, CA 91765

    Contact for pricing
    17,616 sqft

    Office space available for lease in Diamond Bar, California.

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    First-Floor Medical Office Space
    First-Floor Medical Office Space

    888 Brea Canyon Rd, Bldg 1, Diamond Bar, CA 91789

    Contact for pricing
    1,195 sqft

    Ground-level suite suited to medical and professional office operations.

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    Second-Floor Office Space
    Second-Floor Office Space

    1550 Valley Vista Dr, Diamond Bar, CA 91765

    Contact for pricing
    6,423 sqft

    Second-floor office suite available for lease, with a reduced incentive rate for the initial 12 months.

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    Based on your search, we've compiled 22 Potential Opportunities for your consideration. Besides 14 Active listings in Diamond Bar, CA, we suggest exploring alternatives. Consider Similar 4 Spaces in Nearby Cities, and Similar 4 Properties for Sales.

    Office Units for Lease in Nearby Cities

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

    Flex Space with Warehouse
    Flex Space with Warehouse

    727 S Brea Canyon Rd, Walnut, CA 91789

    Contact for pricing
    1,687 sqft

    Office and warehouse components support flexible commercial operations in a multi-tenant building.

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    Freestanding Flex Building
    Freestanding Flex Building

    Walnut, CA 91789

    Contact for pricing
    109,448 sqft

    Standalone industrial facility combines office space with high-clearance loading and substantial electrical capacity.

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    Pomona Office Space Available
    Pomona Office Space Available

    21 Rancho Camino Dr, Pomona, CA 91766

    Contact for pricing
    1,519 sqft 6.34 AC lot

    First floor office space available for rent in Pomona.

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    Pomona Office Space For Rent
    Pomona Office Space For Rent

    31 Rancho Camino Dr, Pomona, CA

    Contact for pricing
    13,996 sqft 6.34 AC lot

    Second floor office space in new construction building.

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    Similar Spaces for Sale in Diamond Bar, CA

    Consider Similar Space for Sale. We found 4 Spaces matching your search parameters.

    Professional Office Condo
    Professional Office Condo

    706 N Diamond Bar, Diamond Bar, CA 91765

    $859,900
    1,510 sqft

    Functional commercial suite with reception, private offices, conference space, and open workspace in an established professional complex.

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    Diamond Bar Corporate Center Office
    Diamond Bar Corporate Center Office

    1470 Valley Vista Dr 206, Diamond Bar, CA 91765

    $3,579,800
    20,000 sqft 1.16 AC lot

    Luxurious office units available for purchase in Diamond Bar.

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    Office Condo with Parking
    Office Condo with Parking

    706 N Diamond Bar, Diamond Bar, CA 91765

    $849,900

    Office condo suite includes reception, private offices, conference room, workspace, and a private restroom in a professional complex.

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    Diamond Bar Corporate Center Office
    Diamond Bar Corporate Center Office

    1470 Valley Vista Dr Ste 206, Diamond Bar, CA 91765

    $3,875,600

    Office spaces for sale in Diamond Bar Corporate Center.

    View details

    Diamond Bar, CA Office Units Lease Rates & Market Statistics

    Explore 14 Office Units for lease in Diamond Bar, CA on Realmo, a commercial real estate exchange covering the Diamond Bar area. The current inventory totals 95,231 square feet of properties — an average of ~6,800 SF per listing.

    Office Units lease rates in Diamond Bar range from $39 SF/Yr at the entry level to $39 SF/Yr at the top of the market, averaging $39 SF/Yr. Pricing across the market is relatively uniform, which simplifies like-for-like comparison between listings. At $39 SF/Yr, the local average runs 58% above California's state average of $24.69 SF/Yr.

    Diamond Bar accounts for 1% of the 1,402 office units currently available across Los Angeles County, where nearby markets include Los Angeles and Santa Monica. Office Units make up 82% of the 17 Office Spaces currently for lease in Diamond Bar, with asking rates in line with the citywide Office Spaces average.

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    Popular Searches in Diamond Bar, CA

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    Most Searched ZIP Codes in Diamond Bar, CA

    • 91765
    • 91789

    Featured Diamond Bar Real Estate Agencies

    Realmo connects you with licensed Diamond Bar CRE brokers providing property specifications, local market pricing, and commercial transaction underwriting support.

    real estate 100, inc.
    1411 so Diamond bar blvd Diamond Bar, CA 91765
    Phone: (909) 861-9985
    Omni Realty and Investments
    3333 Brea Canyon Road # 1117 Diamond Bar, CA 91765
    Phone: (909) 860-6640
    REMAX Top Producers
    618 N Diamond Bar Blvd Diamond Bar, CA 91765
    Phone: (909) 590-8853
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