On average, listings lease in the $30's per square foot per year. The Clayton County region is experiencing a a rise in rates. In the last 3 months, the median rate rose $10 per sqft per year. That's a 45% rise in rent.
In the last 90 days, 38 listings have been made available, which means new availabilities most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 3% of the available space in the Clayton County 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 posted, so finding a space for a small business might be tough.
Even though the median size is 3,800 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this market are around 1 floors. Most buildings in this region were built in 1988 and are Class B.