The typical asking rate per listing is in the $20's per square foot per year. The Crystal Lake submarket is going through a decrease in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 6% decline in rent.
Compared to the rest of the Chicagoland market, the Crystal Lake submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 28 listings have been posted online, which means spaces are probably going fast. 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 1,200 sqft. Most buildings in this area are approximately 1 stories. Most buildings in this area were built in 1994 and are Class A.