The typical asking rate per listing is in the $20's per square foot per year. The Humboldt Park submarket is seeing a an increase in rates. In the last 3 months, the median rate rose $4 per sqft per year. That's a 20% increase in rent.
Compared to the rest of the Chicagoland market, the Humboldt Park submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 6 listings have been made available, which means office spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 400 sqft. Most buildings in this market are approximately 3 stories. Most buildings in this region were built in 1950 and are Class B.