The typical asking rate per listing is in the $10's per square foot per year. The Chester submarket is going through a a boost in rates. In the last 3 months, the median rate went up $18 per sqft per year.
In the last 90 days, 1 listings have been posted online, which means spaces might be going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,880 sqft. Most buildings in this area are close to 2 floors. Most buildings in this market were built in 2004 and are Class B.