Compared to the rest of the Chicagoland market, the Chesterton region has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 4 listings have been listed, which means office spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 50% of the office spaces in the Chesterton are subleases, so you might be able to snag a great spot on a short term. 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 properties in this area are close to 3 floors. Most buildings in this region were built in 1965 and are Class B.