On average, listings lease in the $20's per square foot per year. The Oak Ridge region is going through a a rise in rates. In the last 3 months, the median rate went up $7 per sqft per year. That's a 36% increase in rent.
In the last 90 days, 2 listings have come on the market, which means listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 1,100% of the office spaces in the Oak Ridge 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 260 sqft. Most properties in this area are close to 1 floors. Most buildings in this region were built in 0 and are Class A.