Most listings are in the $10's per square foot per year. The Superior region is experiencing a a rise in rates. In the last 3 months, the median rate increased $16 per sqft per year.
In the last 90 days, 7 listings have come on the market, which means listings 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.
The standard measurement for office space in this area is around 850 sqft. Most buildings in this area are around 2 floors.