The typical asking rate per listing is in the $20's per square foot per year. The Horsham region is going through a decline in rates. In the last 3 months, the median rate fell $4 per sqft per year. That's a 11% decline in rent.
In the last 90 days, 5 listings have come on the market, which means leases are probably leasing quickly. 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 44,020 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this region are around 2 stories. Most buildings in this area were built in 1987 and are Class B.