Most listings are in the $20's per square foot per year. The Ontario submarket is going through a decrease in rates. In the last 3 months, the median rate fell $16 per sqft per year. That's a 36% decline in rent.
In the last 90 days, 24 listings have been made available, which means leases might be leasing quickly. You'll want to be prepared to make an offer immediately. About 8% of the available leases in the Ontario are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 3,980 sqft, there are still 0 listings below 2,000 sqft. Most properties in this region are around 2 floors. Most buildings in this region were built in 1986 and are Class A.