Most listings are in the $10's per square foot per year. The Tarpon Springs submarket is experiencing a a rise in rates. In the last 3 months, the median rate went up $18 per sqft per year.
In the last 90 days, 2 listings have come on the market, which means spaces are probably going fast. You'll want to be prepared to make an offer immediately. About 200% of the available leases in the Tarpon Springs 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 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 1,480 sqft. Most buildings in this area are close to 1 stories. Most buildings in this area were built in 1931 and are Class B.