Highlights
- The average rent for office space in Ontario is $28.11 per square foot, 2.10% higher compared to the previous year.
- The market’s vacancy rate stands at 12.87%, lower than the state average of California, which is 18.44%.
2025 Office Space Rent & Sales
- $28.11 2025 Avg. Asking Rent
- 2.10% Y-o-Y Avg. Asking Rent Change
- 12.87% 2025 Office Vacancy Rate
What is the average asking rent price for office space in Ontario?
Average asking rents for office space here stand at $28.11 per square foot. The local office market recorded an average vacancy rate of 12.87% in 2025, unchanged from 12.87% in 2024.
Ontario, CA Office Asking Rents by Class
What is the average office rent per square foot by property class in Ontario?
- Avg. Asking Rent Class A & A+$30.32
- Avg. Asking Rent Class B$26.61
What is the average office rent per square foot by property class in CA?
- Avg. Asking Rent Class A & A+$58.81
- Avg. Asking Rent Class B$37.82
- Avg. Asking Rent Class C$22.26
For comparison, the average rent for Class A and A+ office space in California was $58.81 per square foot. The state-wide average for Class B space was $37.82 per square foot, and Class C office spaces averaged $22.26 per square foot.
Ontario, CA Office Indicators by Submarket
| Submarket | Asking Rents | Vacancy Rates |
|---|---|---|
| Fontana | $28.80 | 7.41% |
| Ontario - Chino | $28.09 | 11.40% |
Office Construction in Ontario, CA
What are the largest recent office completions in Ontario?
The largest recent office completion here is 990 Barrington Ave at 289,793 square feet, completed in 2007. The next largest completions are Empire Towers V and One Piemonte.
| Office building | Address | SF | Completed |
|---|---|---|---|
| 150 E Holt Blvd. | 150 N Holt Blvd, 91764 | 58,000 | 2014 |
| One Piemonte | 901 Via Piemonte, 91764 | 122,500 | 2008 |
| 990 Barrington Ave | 990 Barrington Ave, 91764 | 289,793 | 2007 |
| Empire Towers V | 3990 Concours Street, 91764 | 124,529 | 2007 |
| Waterside Center I | 3200 East Guasti Road, 91761 | 72,589 | 2007 |
| Waterside Center III | 3110 East Guasti Road, 91761 | 100,000 | 2005 |
| Airport Corporate Center - Bldg 3 | 3290 Guasti Rd, 91764 | 8,132 | 2005 |
| Empire Towers IV | 3800 Concours Street, 91764 | 75,651 | 2004 |
| Ferrari Corporate Center | 4150 Concours St., 91764 | 36,744 | 2004 |
| Empire Towers III | 4200 Concours Street, 91764 | 75,000 | 2001 |
See reports for other markets
- Los Angeles Office Rent Price
- San Francisco Office Rent Price
- San Diego Office Rent Price
- Sacramento Office Rent Price
- San Jose Office Rent Price
- Irvine Office Rent Price
- Fresno Office Rent Price
- Oakland Office Rent Price
- Palo Alto Office Rent Price
- Santa Monica Office Rent Price
- Pasadena Office Rent Price
- Redwood City Office Rent Price
- Walnut Creek Office Rent Price
- Santa Clara Office Rent Price
- Long Beach Office Rent Price
- Beverly Hills Office Rent Price
Disclaimer
All information on this page is based on city-level data that includes properties equal to or larger than 25,000 square feet.
Averages were calculated based on values dated between January 1st and December 31st 2025. Construction pipeline data represented herein is valid as of January 2026.
While every effort was made to ensure the accuracy of the data presented in this report, the information is provided “as is” and neither CommercialCafe nor Yardi Research Data can guarantee that the information provided is complete.