The typical asking rate per listing is in the $20's per square foot per year. The Casselberry region is going through a an increase in rates. In the last 3 months, the median rate increased $15 per sqft per year. That's a 100% increase in rent.
In the last 90 days, 8 listings have come on the market, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 16,500 sqft, there are still 0 new listings below 2,000 sqft. Most buildings in this area are approximately 1 stories. Most buildings in this region were built in 1986 and are Class B.