On average, listings lease in the $20's per square foot per year. The St. Louis County submarket is experiencing a decrease in rates. In the last 3 months, the median rate fell $16 per sqft per year. That's a 40% decrease in rent.
In the last 90 days, 71 listings have been posted online, so you'll want to check back regularly for new listings. About 1% of the office spaces in the St. Louis County are subleases, so you will probably have to focus your search on direct office leases. 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 1,460 sqft. Most buildings in this area are close to 3 floors. Most buildings in this market were built in 1955 and are Class A.