The typical asking rate per listing is in the $10's per square foot per year. The North Fort Myers region is going through a an increase in rates. In the last 3 months, the median rate went up $4 per sqft per year. That's a 25% increase in rent.
In the last 90 days, 11 listings have been listed, which means office spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. 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 1,410 sqft. Most properties in this market are approximately 1 floors. Most buildings in this region were built in 1982 and are Class C.