Most listings are in the $30's per square foot per year. The Des Plaines region is experiencing a decline in rates. In the last 3 months, the median rate fell $7 per sqft per year. That's a 19% decline in rent.
Compared to the rest of the Chicagoland market, the Des Plaines submarket has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 23 listings have come on the market, which means leases might be going fast. You'll want to be prepared to make an offer immediately. About 4% of the available space 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 on the market, 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 properties in this market are around 2 floors. Most buildings in this market were built in 1975 and are Class B.