Most listings are in the $20's per square foot per year. The Independence submarket is going through a a boost in rates. In the last 3 months, the median rate rose $22 per sqft per year.
In the last 90 days, 63 listings have been listed, so you'll want to check back regularly for new listings. About 111% of the available leases in the Independence 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,210 sqft. Most buildings in this market are approximately 4 stories. Most buildings in this region were built in 1987 and are Class B.