On average, listings lease in the $30's per square foot per year. The Burke County submarket is going through a a boost in rates. In the last 3 months, the median rate increased $34 per sqft per year.
In the last 90 days, 21 listings have come on the market, which means new listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,250 sqft. Most properties in this area are approximately 2 floors. Most buildings in this region were built in 1983 and are Class A.