Most listings are in the $10's per square foot per year. The Mishawaka region is experiencing a a rise in rates. In the last 3 months, the median rate rose $20 per sqft per year.
In the last 90 days, 32 listings have been made available, which means new listings are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 69% of the listings in the Mishawaka 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 2,130 sqft. Most buildings in this market are around 2 stories. Most buildings in this region were built in 1991 and are Class A.