The typical asking rate per listing is in the $20's per square foot per year. The St. Petersburg region is going through a an increase in rates. In the last 3 months, the median rate increased $24 per sqft per year.
In the last 90 days, 90 listings have come on the market, so you'll want to check back regularly for new listings. About 146% of the available space in the St. Petersburg are subleases, so you might be able to snag a great spot on a short term. 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 2,560 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this area are close to 2 floors. Most buildings in this market were built in 1954 and are Class B.