Compared to the rest of the Chicagoland market, the Southwest Side region has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 6 listings have been made available, which means spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 333% of the listings in the Southwest Side are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 1,270 sqft. Most buildings in this region are close to 1 stories. Most buildings in this market were built in 1952 and are Class A.