Most listings are in the $10's per square foot per year. The Wisconsin region is going through a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 7% decrease in rent.
In the last 90 days, 823 listings have come on the market, so you'll want to check back regularly for new listings. About 0% of the available space in the Wisconsin are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,440 sqft. Most properties in this area are around 2 stories. Most buildings in this area were built in 1983 and are Class B.