Most listings are in the $20's per square foot per year. The Kansas City submarket is going through a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 6% decline in rent.
Compared to the rest of the Kansas City market, the Kansas City region has lower rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 413 listings have been made available, so you'll want to check back regularly for new listings. About 2% of the available space in the Kansas City are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 3,470 sqft, there are still 0 leases below 2,000 sqft. Most properties in this area are approximately 2 floors. Most buildings in this area were built in 1965 and are Class B.