Most listings are in the $20's per square foot per year. The Creve Coeur submarket is going through a decline in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 11% decrease in rent.
In the last 90 days, 36 listings have come on the market, which means office spaces might be going fast. You'll want to be prepared to make an offer immediately. About 6% of the office spaces in the Creve Coeur 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 2,620 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this market are close to 2 floors. Most buildings in this area were built in 1982 and are Class A.