Most listings are in the $10's per square foot per year. The Walton 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 12% decline in rent.
In the last 90 days, 1 listings have come on the market, which means spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 500% of the available space in the Walton 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 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 2,290 sqft. Most properties in this area are close to 1 floors. Most buildings in this area were built in 1998 and are Class B.