The typical asking rate per listing is in the $80's per square foot per year. The Toronto region is seeing a an increase in rates. In the last 3 months, the median rate went up $84 per sqft per year.
In the last 90 days, 10 listings have been made available, which means leases most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 90% of the available space in the Toronto are subleases, so you might be able to find a shorter term or below market rent. 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 39,310 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this region are close to 8 floors. Most buildings in this region were built in 1980 and are Class A.