In the last 90 days, 10 listings have been made available, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 10% of the available space in the Knox County are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 4,870 sqft, there are still 0 leases below 2,000 sqft. Most properties in this market are around 1 stories. Most buildings in this region were built in 1975 and are Class C.