On average, listings lease in the $20's per square foot per year. The Greenville County submarket is going through a an increase in rates. In the last 3 months, the median rate went up $4 per sqft per year. That's a 21% increase in rent.
In the last 90 days, 176 listings have come on the market, so you'll want to check back regularly for new listings. About 5% of the available space in the Greenville County are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 2,800 sqft, there are still 0 listings below 2,000 sqft. Most properties in this market are around 2 stories. Most buildings in this area were built in 1990 and are Class B.