Most listings are in the $20's per square foot per year. The Monona submarket is going through a an increase in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 5% rise in rent.
In the last 90 days, 10 listings have been listed, which means spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 70% of the available leases in the Monona 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,150 sqft. Most properties in this market are approximately 2 floors. Most buildings in this market were built in 1987 and are Class C.