On average, listings lease in the $20's per square foot per year. The West Chester submarket is experiencing a an increase in rates. In the last 3 months, the median rate rose $4 per sqft per year. That's a 17% increase in rent.
In the last 90 days, 12 listings have been posted online, which means leases are probably 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,500 sqft. Most properties in this area are around 2 stories. Most buildings in this region were built in 1936 and are Class A.