The typical asking rate per listing is in the $20's per square foot per year. The St. Johns County submarket is going through a decrease in rates. In the last 3 months, the median rate decreased $6 per sqft per year. That's a 20% decrease in rent.
In the last 90 days, 9 listings have come on the market, which means spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. 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 1,960 sqft. Most properties in this area are close to 2 stories. Most buildings in this market were built in 1992 and are Class A.