Most listings are in the $10's per square foot per year. The Greenville region is going through a decrease in rates. In the last 3 months, the median rate fell $6 per sqft per year. That's a 26% decline in rent.
In the last 90 days, 61 listings have been made available, so you'll want to check back regularly for new listings. About 15% of the available space in the Greenville are subleases, so you might be able to find a shorter term or below market rent. 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 2,380 sqft. Most properties in this market are around 2 floors. Most buildings in this market were built in 1986 and are Class B.