Most listings are in the $20's per square foot per year. The Dunedin submarket is experiencing a a rise in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 11% increase in rent.
In the last 90 days, 6 listings have been posted online, which means listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 17% of the listings in the Dunedin 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.
The standard measurement for office space in this area is around 2,000 sqft. Most properties in this market are around 2 floors. Most buildings in this market were built in 1979 and are Class Class B.