On average, listings lease in the $20's per square foot per year. The Cobb County region is going through a a boost in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 5% increase in rent.
In the last 90 days, 244 listings have been made available, so you'll want to check back regularly for new listings. About 1% of the available leases in the Cobb 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 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 2,490 sqft. Most buildings in this market are around 2 stories. Most buildings in this market were built in 1987 and are Class B.