On average, listings lease in the $10's per square foot per year. The Roanoke County submarket is going through a a boost in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 16% increase in rent.
In the last 90 days, 76 listings have been made available, so you'll want to check back regularly for new listings. About 1% of the listings in the Roanoke 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 3,000 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this region are around 2 floors. Most buildings in this market were built in 1953 and are Class B.