On average, listings lease in the $20's per square foot per year. The Columbia region is going through a decrease in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 6% decline in rent.
In the last 90 days, 44 listings have come on the market, so you'll want to check back regularly for new listings. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,200 sqft. Most properties in this market are around 2 floors. Most buildings in this region were built in 1997 and are Class A.