Most listings are in the $20's per square foot per year. The Hall County region is going through a an increase in rates. In the last 3 months, the median rate went up $6 per sqft per year. That's a 38% rise in rent.
In the last 90 days, 31 listings have been listed, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. About 3% of the available space in the Hall County are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 2,660 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this area are around 2 floors. Most buildings in this area were built in 1982 and are Class B.