On average, listings lease in the $30's per square foot per year. The Des Plaines region is going through a a rise in rates. In the last 3 months, the median rate rose $6 per sqft per year. That's a 26% increase in rent.
Compared to the rest of the Chicagoland market, the Des Plaines submarket has higher rates, and you'll need to make a great offer to be in this hot submarket.
In the last 90 days, 23 listings have been listed, which means leases are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 4% of the listings in the Des Plaines are subleases, so you will probably have to focus your search on direct office leases. 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 2,390 sqft. Most buildings in this market are approximately 2 stories. Most buildings in this area were built in 1975 and are Class B.