Most listings are in the $20's per square foot per year. The Suwanee submarket is experiencing a a boost in rates. In the last 3 months, the median rate increased $21 per sqft per year.
Compared to the rest of the Metro Atlanta market, the Suwanee region has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 14 listings have been posted online, which means listings are probably 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,350 sqft. Most buildings in this area are around 3 floors. Most buildings in this area were built in 2005 and are Class B.