On average, listings lease in the $0's per square foot per year. The Far South Chicago region is seeing a decrease in rates. In the last 3 months, the median rate fell $37 per sqft per year. That's a 100% decline in rent.
In the last 90 days, 2 listings have been posted online, which means office spaces are probably 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.
The standard measurement for office space in this area is around sqft. Most properties in this area are approximately 1 floors. Most buildings in this market were built in 1960 and are Class B.