The typical asking rate per listing is in the $10's per square foot per year. The Gahanna submarket is seeing a an increase in rates. In the last 3 months, the median rate increased $18 per sqft per year.
In the last 90 days, 23 listings have come on the market, which means listings most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 39% of the listings in the Gahanna are subleases, so you might be able to snag a great spot on a short term. 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 170 sqft. Most buildings in this area are close to 2 floors. Most buildings in this market were built in 1997 and are Class B.