On average, listings lease in the $20's per square foot per year. The Marietta region is seeing a a rise in rates. In the last 3 months, the median rate went up $5 per sqft per year. That's a 23% rise in rent.
Compared to the rest of the Metro Atlanta market, the Marietta submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 42 listings have been made available, so you'll want to check back regularly for new listings. 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 2,500 sqft. Most buildings in this market are close to 2 stories. Most buildings in this region were built in 1986 and are Class B.