On average, listings lease in the $30's per square foot per year. The Broomall region is going through a an increase in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 4% rise in rent.
In the last 90 days, 2 listings have been made available, which means new 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 on the market, so finding a space for a small business might be tough.
Even though the median size is 16,000 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this region were built in 1985 and are Class B.