On average, listings lease in the $20's per square foot per year. The Evergreen Park region is experiencing a an increase in rates. In the last 3 months, the median rate went up $21 per sqft per year. That's a Inf% increase in rent.
Compared to the rest of the Chicagoland market, the Evergreen Park region has lower rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 14 listings have been listed, which means office spaces are probably leasing quickly. 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 1,040 sqft. Most buildings in this market are close to 2 floors. Most buildings in this area were built in 1965 and are Class C.