Compared to the rest of the St. Louis market, the St. Louis submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 80 listings have been listed, so you'll want to check back regularly for new listings. About 1% of the available space in the St. Louis are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,220 sqft. Most properties in this region are approximately 3 stories. Most buildings in this market were built in 1964 and are Class B.