The typical asking rate per listing is in the $30's per square foot per year. The Ontario Center region is experiencing a a rise in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 8% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Ontario Center region has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 19 listings have been made available, which means office spaces most likley are going fast. You'll want to be prepared to make an offer immediately. About 5% of the available leases in the Ontario Center are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 3,110 sqft, there are still 0 leases below 2,000 sqft. Most properties in this region are close to 3 stories. Most buildings in this market were built in 2002 and are Class A.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Education is the dominant industry in this region. Commute by walking is the most popular way to get to work amongst Ontario Center occupants. Commuting between 30 and 45 minutes a day is the norm for those who opt to reside in this part of town.