Most listings are in the $10's per square foot per year. The Canonsburg submarket is going through a a boost in rates. In the last 3 months, the median rate increased $15 per sqft per year.
In the last 90 days, 3 listings have been posted online, which means office spaces most likley are going fast. You'll want to be prepared to make an offer immediately. 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 2,600 sqft, there are still 0 new listings below 2,000 sqft.