The typical asking rate per listing is in the $20's per square foot per year. The Columbus region is going through a a boost in rates. In the last 3 months, the median rate increased $3 per sqft per year. That's a 14% rise in rent.
Compared to the rest of the Columbus market, the Columbus region has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 243 listings have been posted online, so you'll want to check back regularly for new listings. About 3% of the available leases in the Columbus 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 posted, so finding a space for a small business might be tough.
Even though the median size is 3,400 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this area are approximately 2 floors. Most buildings in this area were built in 1977 and are Class B.