Most listings are in the $0's per square foot per year. The Biloxi submarket is going through a decline in rates. In the last 3 months, the median rate fell $16 per sqft per year. That's a 100% decline in rent.
In the last 90 days, 0 listings have come on the market, which means spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About NaN% of the available leases in the Biloxi are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 sqft. Most properties in this area are approximately 1 stories. Most buildings in this area were built in 0 and are Class Class B.