On average, listings lease in the $60's per square foot per year. The Crystal Lake region is going through a a rise in rates. In the last 3 months, the median rate rose $46 per sqft per year. That's a 269% rise in rent.
Compared to the rest of the Chicagoland market, the Crystal Lake submarket has more expensive rates, and you'll need to make a great offer to be in this hot submarket.
In the last 90 days, 31 listings have been posted online, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 10% of the available space in the Crystal Lake are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 630 sqft. Most buildings in this market are approximately 1 stories. Most buildings in this area were built in 1996 and are Class B.