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75 Office Spaces for Rent in Ontario, CA

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  • Superior Office Suites - Ontario
    Coworking

    Superior Office Suites

    ESDI - Superior Office Suites
    337 North Vineyard Avenue Suite 400, Ontario, CA
    Services
    • Virtual Office
    • Meeting Room
    • Private Office
    Amenities
    • Wi-Fi
    • Parking
    • TV/Monitor
    • Catering
    • Print/Scan/Copy
    View Details Book Now
  • One Lakeshore Centre - Ontario

    One Lakeshore Centre

    3281 East Guasti Road, Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Office
    • 176,207 SF
    Availability
    • 5 Spaces
    • 19,267 SF
    Year Built
    • 1992
    View Details
  • Palm Brook Corporate Center - Bldg. C - Ontario

    Palm Brook Corporate Center - Bldg. C

    3602 Inland Empire Blvd., Ontario, CA
    For Lease
    • $27.60/SF/YR
    Property
    • Office
    • 74,655 SF
    Availability
    • 4 Spaces
    • 11,160 SF
    Year Built
    • 1988
    View Details
  • Empire Corporate Center - Ontario

    Empire Corporate Center

    800 North Haven Avenue, Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Office
    • 80,406 SF
    Availability
    • 6 Spaces
    • 22,333 SF
    Year Built
    • 1985
    View Details
  • Waterside Center - Ontario
    Coworking

    Waterside Center

    Regus
    3200 Guasti Road Suite 100, Ontario, CA
    Services
    • Virtual Office
    • Open Workspace
    • Private Office
    • Dedicated Desk
    Amenities
    • Wi-Fi
    • Parking
    • Coffee/Tea
    • Print/Scan/Copy
    • Phone Booth
    • Phone
    • Window View
    View Details
  • Units 110-190 - Ontario

    Units 110-190

    3550 Philadelphia St., Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Industrial
    • 27,311 SF
    Availability
    • 1 Space
    • 4,456 SF
    Year Built
    • 2005
    View Details
  • 3270 Inland Empire Blvd - Ontario

    3270 Inland Empire Blvd

    3270 Inland Empire Blvd, Ontario, CA
    For Lease
    • $2.15/SF/MO
    Property
    • Office
    • 44,533 SF
    Availability
    • 2 Spaces
    • 9,938 SF
    Year Built
    • 1992
    View Details
  • 1131 West 6th Street - Ontario

    1131 West 6th Street

    1131 West 6th Street, Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Office
    • 309 SF
    Availability Contact for availability
    Year Built
    • 1978
    View Details
  • Empire Towers V - Ontario

    Empire Towers V

    3990 Concours Street, Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Office
    • 124,529 SF
    Availability
    • 5 Spaces
    • 33,336 SF
    Year Built
    • 2007
    View Details
  • Elma Court Business Park - Ontario

    Elma Court Business Park

    1822 Elma Court, Ontario, CA
    For Lease
    • $1.50/SF/MO
    Property
    • Office
    • 17,360 SF
    Availability
    • 1 Space
    • 1,240 SF
    View Details
  • Centrelake Plaza - Ontario

    Centrelake Plaza

    3401 Centre Lake Drive, Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Office
    • 114,420 SF
    Availability
    • 5 Spaces
    • 16,458 SF
    Year Built
    • 1990
    View Details
  • Ontario Corporate Center - Ontario

    Ontario Corporate Center

    430 North Vineyard Avenue, Ontario, CA
    For Lease
    • $29.40/SF/YR
    Property
    • Office
    • 97,076 SF
    Availability
    • 9 Spaces
    • 47,126 SF
    Year Built
    • 1989
    View Details
  • Palm Brook Corporate Center - Bldg. B - Ontario

    Palm Brook Corporate Center - Bldg. B

    3602 Inland Empire Blvd., Ontario, CA
    For Lease
    • $27.60/SF/YR
    Property
    • Office
    • 15,365 SF
    Availability
    • 1 Space
    • 1,565 SF
    Year Built
    • 1988
    View Details
  • Empire Towers III - Ontario

    Empire Towers III

    4200 Concours Street, Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Office
    • 75,000 SF
    Availability
    • 3 Spaces
    • 9,554 SF
    Year Built
    • 2001
    View Details
  • Empire Towers I - Ontario

    Empire Towers I

    3633 Inland Empire Blvd, Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Office
    • 177,515 SF
    Availability
    • 6 Spaces
    • 29,916 SF
    Year Built
    • 1990
    View Details
  • One Lakeshore - Ontario
    Coworking

    One Lakeshore

    Regus
    3281 E. Guasti Road Suite 700, Ontario, CA
    Services
    • Virtual Office
    • Open Workspace
    • Private Office
    • Dedicated Desk
    Amenities
    • Wi-Fi
    • Parking
    • Coffee/Tea
    • Print/Scan/Copy
    • Phone Booth
    • Phone
    • Window View
    View Details
  • Ontario Airport Tower - Ontario

    Ontario Airport Tower

    2855 East Guasti Road, Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Office
    • 149,946 SF
    Availability
    • 3 Spaces
    • 11,261 SF
    Year Built
    • 2008
    View Details
  • 1609 South Grove Avenue & 1240 & 1260 East Locust Street - Ontario

    1609 South Grove Avenue & 1240 & 1260 East Locust Street

    1609 South Grove Avenue, Ontario, CA
    For Lease
    • $1.50/SF/MO
    Property
    • Industrial
    • 79,548 SF
    Availability
    • 1 Space
    • 1,950 SF
    Year Built
    • 1989
    View Details
  • Waterside Center I - Ontario

    Waterside Center I

    3200 East Guasti Road, Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Office
    • 72,589 SF
    Availability
    • 2 Spaces
    • 24,482 SF
    Year Built
    • 2007
    View Details
  • Empire Towers II - Ontario

    Empire Towers II

    4141 Inland Empire Blvd, Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Office
    • 70,021 SF
    Availability
    • 1 Space
    • 6,113 SF
    Year Built
    • 2000
    View Details
  • 1500 Auto Center Drive - Ontario

    1500 Auto Center Drive

    1500 South Auto Center Drive, Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Office
    • 36,000 SF
    Availability
    • 1 Space
    • 34,000 SF
    Year Built
    • 2001
    View Details
  • Transpark Office Center - Ontario

    Transpark Office Center

    2910 Inland Empire Blvd, Ontario, CA
    For Lease
    • $2.25 - $2.65/SF/MO
    Property
    • Office
    • 209,972 SF
    Availability
    • 5 Spaces
    • 22,877 SF
    Year Built
    • 1981
    View Details
  • Palm Brook Corporate Center - Bldg. A - Ontario

    Palm Brook Corporate Center - Bldg. A

    3602 Inland Empire Blvd., Ontario, CA
    For Lease
    • $27.60/SF/YR
    Property
    • Office
    • 13,400 SF
    Availability
    • 1 Space
    • 1,724 SF
    Year Built
    • 1988
    View Details
  • 1950A - 2000A S Grove Ave - Ontario

    1950A - 2000A S Grove Ave

    1950A - 2000A S Grove Ave, Ontario, CA
    For Lease
    • $1.45 - $1.75/SF/MO
    Property
    • Office
    • 15,900 SF
    Availability
    • 2 Spaces
    • 2,900 SF
    View Details
  • Waterside Center III - Ontario

    Waterside Center III

    3110 East Guasti Road, Ontario, CA
    For Lease
    • Contact for pricing
    Property
    • Office
    • 100,000 SF
    Availability
    • 9 Spaces
    • 13,503 SF
    Year Built
    • 2005
    View Details
  • One Piemonte - Ontario

    One Piemonte

    901 Via Piemonte, Ontario, CA
    For Lease
    • $33.00/SF/YR
    Property
    • Office
    • 122,500 SF
    Availability
    • 3 Spaces
    • 21,984 SF
    Year Built
    • 2008
    View Details

Ontario, CA Office Space Listings

There are currently 62 office listings available in Ontario, CA. These listings include 75 office spaces that encompass a total of 318,605 square feet. Available office spaces in Ontario, CA range in size from 484 square feet to 34,000 square feet. A total of 37 off-market office properties located in Ontario, CA are also available for research.

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Ontario, CA Office Market Overview

Location Photo

Like the rest of the Greater Los Angeles area, Ontario features a robust economy and plenty of things to do. For most of the city’s existence, Ontario’s economy has relied on transportation and production. However, the California tech boom can be felt here, too, and the city is especially welcoming toward startups that want to innovate.

Ontario is situated near the halfway point between Los Angeles and San Bernardino, offering great logistical opportunities for local companies. And, when it comes to leisure time, the city offers an eclectic mix of restaurants, cafes and galleries, as well as wilderness trails on the nearby Mount San Antonio — known to Ontario residents as “Mount Baldy.”

Ontario, CA Office Inventory Breakdown

Office Spaces

Total: 5,502,727 SF

Data provided by Yardi Matrix, properties over 50k SF, includes office with retail
By square footage range:
Range Total square feet Share of total
50k to 100k SqFt 2,013,071 SqFt 36.58% of total office
100k to 500k SqFt 2,891,656 SqFt 52.55% of total office
500k to 1M SqFt 598,000 SqFt 10.87% of total office
By class:
Class Total square feet Share of total
Class A 2,448,755 SqFt 44.5% of total office
Class B 1,612,972 SqFt 29.31% of total office
In 2023 the Ontario, CA office market encompassed 5,502,727 square feet of space. Of these, 598,000 square feet were office properties between 500K to 1M square feet and 2,013,071 square feet were buildings between 50k to 100k.

Class A office space makes up a 44.5% share of Ontario, CA office inventory, while Class B office assets represent roughly 29.31%.

Ontario, CA Green Office Space

Total Office over 25k - Powered by CommercialEdge
Total SqFt Green SqFt Green %
4,573,037 356,568 8%
Percentage Icon

8% Green

Green Office Inventory

Roughly 8% of the total Ontario office inventory - adding up to 4,573,037 square feet - is classified as green office space.

Frequently Asked Questions

How much does office space cost in Ontario, CA?

The average office rental rate in Ontario, CA is $27.14 per square foot. Asking prices vary based on the property’s location, overall rating, amenities, proximity to restaurants, cafes and entertainment venues, as well as public transport, airports and highways. Check Ontario Office Market Trends for more stats.

What is the size of available office spaces in Ontario, CA?

The Ontario, CA office market can accommodate various businesses, sporting a range of office space availabilities. The average size of office space availabilities is 17,242 square feet. If you’re just starting out as a company or as an entrepreneur, the smallest available office space in Ontario, CA is 484 square feet, while the maximum rentable space on the market now is 34,000 square feet.

How do I get office space in Ontario, CA?

Start your search for office space in Ontario, CA by using our filters that allow you to find the best space for your business needs. Filter listings by location, property size, available space or lease rate. Property pages will offer details about an office building’s rating, year built, availabilities, price per square foot and more. After drawing up a shortlist, make sure you contact the listed broker(s) to schedule a viewing and begin the negotiation process for your lease contract.

How many office listings are available in Ontario, CA?

There are 62 office listings on the Ontario, CA market. See all available office spaces for rent.

What other property types are available for lease in Ontario, CA?

In addition to traditional office spaces, commercial real estate listings on our platform also include coworking & shared office space options, retail spaces, industrial buildings, warehouses, distribution facilities, and more.

Ontario, CA Demographics & Income

Median Age 32.1

Population by age category

Under 20
29.1%
20 to 64
61.9%
65 and over
8.9%

Population by age range

0-9
14.7%
10-19
14.4%
20-29
16.2%
30-39
16.9%
40-49
11.9%
50-59
11.4%
60-69
8.4%
70-79
4.2%
80-89
1.8%

In 2021, the median age of Ontario residents was 32.1 years old. Aproximately 61.9% of total population is between the ages of 20-64, with 16.2% between 20-29 years old.

Income per capita $25,143

Median Income per age

0-25
$34,430
25-44
$76,068
45-64
$75,981
65+
$63,365

The median income for Ontario residents 45-64 years old stands at $75,981, with 25-44 years old earnings $76,068 per year.

Management

$52,172

Management, business and financial occupations

Computer

$60,033

Computer, engineering and science occupations

Sales

$32,000

Sales and office occupations

The mean wage for Ontario workers in management, business and financial ocupations is $52,172, whereas those in computer engineering and science occupation earn $60,033 per year. Sales and office occupations workers mean income is $32,000.

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