The typical asking rate per listing is in the $20's per square foot per year. The Kansas submarket is going through a a rise in rates. In the last 3 months, the median rate went up $22 per sqft per year.
In the last 90 days, 886 listings have been listed, so you'll want to check back regularly for new listings. About 46% of the available leases in the Kansas are subleases, so you might be able to snag a great spot on a short term. 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 2,100 sqft. Most buildings in this area are close to 2 floors. Most buildings in this market were built in 1983 and are Class B.