On average, listings lease in the $20's per square foot per year. The Porter County submarket is going through a a boost in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 10% rise in rent.
In the last 90 days, 15 listings have been made available, which means leases might be going fast. You'll want to be prepared to tour spaces as quick as possible. About 7% of the available space in the Porter County 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.
The standard measurement for office space in this area is around 1,200 sqft. Most buildings in this area are around 1 stories. Most buildings in this market were built in 1980 and are Class B.