Most listings are in the $20's per square foot per year. The St. Louis County submarket is seeing a decline in rates. In the last 3 months, the median rate decreased $0 per sqft per year. That's a 1% decrease in rent.
In the last 90 days, 343 listings have been posted online, so you'll want to check back regularly for new listings. About 3% of the available space in the St. Louis County 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,500 sqft. Most buildings in this area are approximately 2 floors. Most buildings in this market were built in 1983 and are Class B.