The typical asking rate per listing is in the $20's per square foot per year. The Northdale region is going through a a rise in rates. In the last 3 months, the median rate went up $26 per sqft per year.
In the last 90 days, 6 listings have come on the market, which means new listings are probably going fast. You'll want to be prepared to make an offer immediately. About 17% of the available leases in the Northdale are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 2,590 sqft, there are still 0 leases below 2,000 sqft. Most properties in this market are around 1 floors. Most buildings in this region were built in 1989 and are Class B.