On average, listings lease in the $20's per square foot per year. The Smyrna region is seeing a decline in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 6% decrease in rent.
Compared to the rest of the Metro Atlanta market, the Smyrna submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 10 listings have been listed, which means new availabilities most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. 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 1,490 sqft. Most buildings in this market are around 2 stories. Most buildings in this area were built in 1984 and are Class B.