The typical asking rate per listing is 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 rose $2 per sqft per year. That's a 10% increase in rent.
Compared to the rest of the Metro Atlanta market, the Suwanee submarket has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 10 listings have been made available, which means leases most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 1,350 sqft. Most buildings in this market are close to 3 floors. Most buildings in this area were built in 2005 and are Class B.