On average, listings lease in the $10's per square foot per year. The York region is experiencing a a boost in rates. In the last 3 months, the median rate went up $16 per sqft per year.
In the last 90 days, 14 listings have been listed, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. About 164% of the listings in the York 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 4,000 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this market are approximately 3 floors. Most buildings in this market were built in 1927 and are Class B.