Most listings are in the $40's per square foot per year. The Zionsville region is going through a decrease in rates. In the last 3 months, the median rate fell $7 per sqft per year. That's a 13% decline in rent.
In the last 90 days, 5 listings have been listed, which means leases might be leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 20% of the available leases in the Zionsville are subleases, so you might be able to find a shorter term or below market rent. 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 300 sqft. Most properties in this area are close to 1 floors. Most buildings in this area were built in 1996 and are Class A.