The typical asking rate per listing is in the $10's per square foot per year. The St. Charles County region is seeing 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.
In the last 90 days, 82 listings have been listed, so you'll want to check back regularly for new listings. 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 2,400 sqft. Most properties in this area are around 1 stories. Most buildings in this region were built in 2000 and are Class B.