In the last 90 days, 24 listings have been posted online, which means spaces most likley are going fast. You'll want to be prepared to make an offer immediately. About 50% of the listings in the St. Charles are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 2,800 sqft, there are still 0 leases below 2,000 sqft. Most properties in this region are approximately 1 stories. Most buildings in this area were built in 1989 and are Class B.