The typical asking rate per listing is in the $10's per square foot per year. The South Bend submarket is experiencing a decrease in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 7% decline in rent.
In the last 90 days, 40 listings have come on the market, which means new availabilities are probably going fast. You'll want to be prepared to make an offer immediately. About 3% of the office spaces in the South Bend are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,430 sqft. Most buildings in this area are around 2 stories. Most buildings in this area were built in 1971 and are Class B.