Compared to the rest of the Chicagoland market, the Hammond submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 8 listings have been posted online, which means office spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. 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 2,420 sqft. Most buildings in this area are approximately 2 floors. Most buildings in this region were built in 1962 and are Class B.