The typical asking rate per listing is in the $30's per square foot per year. The Olathe submarket is going through a a rise in rates. In the last 3 months, the median rate increased $9 per sqft per year. That's a 39% rise in rent.
In the last 90 days, 11 listings have been made available, which means leases are probably going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,940 sqft. Most properties in this area are approximately 1 floors. Most buildings in this region were built in 1988 and are Class B.