Most listings are in the $20's per square foot per year. The Wescosville submarket is going through a a rise in rates. In the last 3 months, the median rate rose $7 per sqft per year. That's a 38% rise in rent.
In the last 90 days, 1 listings have been made available, which means new listings are probably 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,750 sqft. Most buildings in this area were built in 1991 and are Class B.