The typical asking rate per listing is in the $10's per square foot per year. The York region is seeing a decrease in rates. In the last 3 months, the median rate fell $24 per sqft per year. That's a 60% decrease in rent.
In the last 90 days, 17 listings have been posted online, which means listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,240 sqft. Most properties in this region are around 3 stories. Most buildings in this area were built in 1926 and are Class B.