The typical asking rate per listing is in the $10's per square foot per year. The Roanoke submarket is going through a decrease in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 8% decrease in rent.
In the last 90 days, 45 listings have been posted online, so you'll want to check back regularly for new listings. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,620 sqft. Most buildings in this area are around 2 stories. Most buildings in this market were built in 1953 and are Class B.