Most listings are in the $20's per square foot per year. The Columbia submarket is going through a a boost in rates. In the last 3 months, the median rate rose $0 per sqft per year. That's a 1% increase in rent.
In the last 90 days, 34 listings have been posted online, which means leases are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 6% of the listings in the Columbia are subleases, so you will probably have to focus your search on direct office leases. 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 1,680 sqft. Most buildings in this region are approximately 2 stories. Most buildings in this region were built in 1997 and are Class A.