The typical asking rate per listing is in the $20's per square foot per year. The McDonough region is going through a a rise in rates. In the last 3 months, the median rate rose $24 per sqft per year.
Compared to the rest of the Metro Atlanta market, the McDonough region has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 2 listings have been posted online, which means listings might be going fast. You'll want to be prepared to make an offer immediately. About 350% of the office spaces in the McDonough are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 650 sqft. Most properties in this region are around 1 floors. Most buildings in this region were built in 2006 and are Class B.