The typical asking rate per listing is in the $10's per square foot per year. The St. Charles region is seeing a a boost in rates. In the last 3 months, the median rate rose $0 per sqft per year. That's a 2% rise in rent.
In the last 90 days, 23 listings have been posted online, which means new availabilities might be leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 2,100 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this region were built in 1993 and are Class B.