Most listings are in the $20's per square foot per year. The Florida region is going through a an increase in rates. In the last 3 months, the median rate went up $26 per sqft per year.
In the last 90 days, 4365 listings have come on the market, so you'll want to check back regularly for new listings. About 112% of the available space in the Florida 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,190 sqft. Most properties in this area are around 1 floors. Most buildings in this area were built in 1984 and are Class B.