The typical asking rate per listing is in the $20's per square foot per year. The Paoli submarket is going through a decline in rates. In the last 3 months, the median rate decreased $10 per sqft per year. That's a 31% decline in rent.
In the last 90 days, 8 listings have been made available, which means office spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 50% of the available leases in the Paoli are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 2,500 sqft. Most buildings in this area are close to 2 floors. Most buildings in this market were built in 1980 and are Class B.