Most listings are in the $20's per square foot per year. The Hillsborough County submarket is going through a decline in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 3% decrease in rent.
In the last 90 days, 532 listings have come on the market, so you'll want to check back regularly for new listings. About 2% of the available leases in the Hillsborough County are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,400 sqft. Most buildings in this region are close to 2 stories. Most buildings in this market were built in 1960 and are Class Class B.