Most listings are in the $20's per square foot per year. The Lake St. Louis submarket is going through a a boost in rates. In the last 3 months, the median rate increased $22 per sqft per year. That's a Inf% increase in rent.
In the last 90 days, 6 listings have come on the market, which means new listings most likley are 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 available, so finding a space for a small business might be tough.
Even though the median size is 3,600 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this area are around 3 stories. Most buildings in this region were built in 2000 and are Class B.