On average, listings lease in the $20's per square foot per year. The Des Plaines submarket is going through a a rise in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 3% rise in rent.
Compared to the rest of the Chicagoland market, the Des Plaines region has less expensive rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 26 listings have been posted online, which means new availabilities most likley are 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.
Even though the median size is 4,260 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this area are around 2 floors. Most buildings in this market were built in 1973 and are Class B.