Most listings are in the $20's per square foot per year. The Southwest Side submarket is experiencing a a rise in rates. In the last 3 months, the median rate increased $5 per sqft per year. That's a 33% increase in rent.
Compared to the rest of the Chicagoland market, the Southwest Side submarket has lower rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 6 listings have been listed, which means leases might be going fast. You'll want to be prepared to make an offer immediately. 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 market are close to 1 stories. Most buildings in this region were built in 1950 and are Class A.