The typical asking rate per listing is in the $30's per square foot per year. The Decatur submarket is going through a a boost in rates. In the last 3 months, the median rate increased $5 per sqft per year. That's a 18% rise in rent.
Compared to the rest of the Metro Atlanta market, the Decatur region has greater rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 42 listings have come on the market, so you'll want to check back regularly for new listings. About 2% of the available leases in the Decatur 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 690 sqft. Most properties in this market are close to 7 floors. Most buildings in this area were built in 1974 and are Class A.