The typical asking rate per listing is in the $10's per square foot per year. The Johnson County region is experiencing a a rise in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 8% increase in rent.
In the last 90 days, 12 listings have come on the market, which means leases are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 83% of the available leases in the Johnson County 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 1,300 sqft. Most properties in this region are close to 1 stories. Most buildings in this area were built in 1978 and are Class B.