The typical asking rate per listing is in the $10's per square foot per year. The Fort Atkinson region is going through a a boost in rates. In the last 3 months, the median rate rose $16 per sqft per year.
In the last 90 days, 2 listings have been listed, which means office spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 8,440 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are close to 1 stories. Most buildings in this market were built in 1995 and are Class C.