The typical asking rate per listing is in the $10's per square foot per year. The Pewaukee region is going through a a boost in rates. In the last 3 months, the median rate rose $19 per sqft per year.
In the last 90 days, 5 listings have been listed, which means office spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 120% of the available leases in the Pewaukee are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 58,990 sqft, there are still 0 leases below 2,000 sqft. Most properties in this market are around 2 stories. Most buildings in this region were built in 1999 and are Class A.