Most listings are in the $10's per square foot per year. The Fernandina Beach region is experiencing a an increase in rates. In the last 3 months, the median rate rose $20 per sqft per year. That's a Inf% rise in rent.
In the last 90 days, 4 listings have been made available, which means spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 4,050 sqft, there are still 0 leases below 2,000 sqft. Most properties in this market are approximately 2 floors. Most buildings in this area were built in 2000 and are Class B.