Most listings are in the $10's per square foot per year. The Highland submarket is seeing a a boost in rates. In the last 3 months, the median rate rose $17 per sqft per year. That's a Inf% increase in rent.
Compared to the rest of the Chicagoland market, the Highland submarket has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 3 listings have come on the market, which means new listings 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 2,450 sqft. Most properties in this area are approximately 1 stories. Most buildings in this market were built in 1958 and are Class C.