On average, listings lease in the $30's per square foot per year. The West Chester submarket is seeing a a boost in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 6% rise in rent.
In the last 90 days, 7 listings have been listed, which means listings 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 posted, so finding a space for a small business might be tough.
Even though the median size is 3,000 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this market are around 3 floors. Most buildings in this area were built in 1930 and are Class A.