Most listings are in the $20's per square foot per year. The Naples region is seeing a decrease in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 6% decrease in rent.
In the last 90 days, 8 listings have been made available, which means spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 225% of the available leases in the Naples are subleases, so you might be able to find a shorter term or below market rent. 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 3,440 sqft, there are still 0 leases below 2,000 sqft. Most properties in this region are approximately 2 stories. Most buildings in this market were built in 1985 and are Class A.