The typical asking rate per listing is in the $20's per square foot per year. The St. Louis submarket is experiencing a an increase in rates. In the last 3 months, the median rate rose $2 per sqft per year. That's a 12% increase in rent.
Compared to the rest of the St. Louis market, the St. Louis region has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 106 listings have come on the market, so you'll want to check back regularly for new listings. About 3% of the office spaces in the St. Louis are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 4,360 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this region are approximately 3 stories. Most buildings in this area were built in 1961 and are Class B.