Most listings are in the $20's per square foot per year. The Dyer region is seeing a a boost in rates. In the last 3 months, the median rate rose $22 per sqft per year.
Compared to the rest of the Chicagoland market, the Dyer submarket has lower rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 3 listings have been made available, which means spaces most likley are going fast. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 2,600 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this area are around 2 floors. Most buildings in this region were built in 2000 and are Class A.