The typical asking rate per listing is in the $20's per square foot per year. The St. Louis region is going through a a boost in rates. In the last 3 months, the median rate rose $24 per sqft per year.
Compared to the rest of the St. Louis market, the St. Louis region has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 106 listings have been listed, so you'll want to check back regularly for new listings. About 72% of the office spaces in the St. Louis 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 available, so finding a space for a small business might be tough.
Even though the median size is 9,250 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this region are close to 3 floors. Most buildings in this area were built in 1961 and are Class B.