The typical asking rate per listing is in the $20's per square foot per year. The Knoxville submarket is going through a a rise in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 6% rise in rent.
In the last 90 days, 52 listings have come on the market, so you'll want to check back regularly for new listings. About 6% of the office spaces in the Knoxville are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 2,750 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are close to 1 stories. Most buildings in this market were built in 1899 and are Class Class B.