On average, listings lease in the $20's per square foot per year. The Columbia submarket is going through a decline in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 8% decline in rent.
In the last 90 days, 80 listings have been listed, so you'll want to check back regularly for new listings. About 6% of the available leases in the Columbia are subleases, so you will probably have to consider a longer term lease. 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 5,500 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this market are close to 2 floors. Most buildings in this area were built in 1970 and are Class B.