The typical asking rate per listing is in the $10's per square foot per year. The Smith County submarket is going through a decline in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 4% decline in rent.
In the last 90 days, 13 listings have been posted online, which means leases most likley are 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,300 sqft. Most buildings in this market are approximately 1 stories. Most buildings in this region were built in 1980 and are Class B.