Most listings are in the $10's per square foot per year. The St. Charles submarket is experiencing a a rise in rates. In the last 3 months, the median rate went up $0 per sqft per year. That's a 2% rise in rent.
In the last 90 days, 27 listings have been made available, which means spaces might be 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 1,890 sqft. Most properties in this market are approximately 2 floors. Most buildings in this market were built in 1993 and are Class B.