On average, listings lease in the $20's per square foot per year. The Naples region is seeing a a rise in rates. In the last 3 months, the median rate increased $5 per sqft per year. That's a 19% increase in rent.
In the last 90 days, 47 listings have been listed, so you'll want to check back regularly for new listings. About 4% of the available leases in the Naples are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 1,470 sqft. Most properties in this area are around 2 floors. Most buildings in this area were built in 1985 and are Class A.