On average, listings lease in the $20's per square foot per year. The Maryland Heights region is experiencing a an increase in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 6% increase in rent.
In the last 90 days, 18 listings have been posted online, which means leases are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 39% of the available leases in the Maryland Heights are subleases, so you might be able to snag a great spot on a short term. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 4,050 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this area are close to 2 floors. Most buildings in this area were built in 1985 and are Class B.