On average, listings lease in the $20's per square foot per year. The Columbus region is going through a a rise in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 11% rise in rent.
Compared to the rest of the Columbus market, the Columbus submarket has smaller rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 247 listings have come on the market, so you'll want to check back regularly for new listings. About 3% of the available space in the Columbus are subleases, so you will probably need to consider the implications of signing a direct lease with the building. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 3,640 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this area are around 2 floors. Most buildings in this region were built in 1979 and are Class B.