The typical asking rate per listing is in the $20's per square foot per year. The St. Louis County region is going through a an increase in rates. In the last 3 months, the median rate rose $24 per sqft per year.
In the last 90 days, 106 listings have been made available, so you'll want to check back regularly for new listings. About 72% of the available space in the St. Louis County are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 9,250 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this market are approximately 3 floors. Most buildings in this market were built in 1961 and are Class B.