Most listings are in the $50's per square foot per year. The Boone County submarket is seeing a an increase in rates. In the last 3 months, the median rate went up $51 per sqft per year. That's a Inf% rise in rent.
In the last 90 days, 5 listings have come on the market, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 40% of the listings in the Boone County 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 300 sqft. Most properties in this market are approximately 1 floors. Most buildings in this market were built in 1925 and are Class B.