Most listings are in the $10's per square foot per year. The Okaloosa County submarket is going through a decline in rates. In the last 3 months, the median rate decreased $2 per sqft per year. That's a 11% decline in rent.
In the last 90 days, 20 listings have been posted online, which means leases are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 405% of the available leases in the Okaloosa County 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,200 sqft. Most properties in this region are close to 1 stories. Most buildings in this market were built in 0 and are Class A.