Most listings are in the $20's per square foot per year. The St. Peters submarket is experiencing a decrease in rates. In the last 3 months, the median rate fell $0 per sqft per year. That's a 2% decrease in rent.
In the last 90 days, 28 listings have been made available, which means listings most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 43% of the office spaces in the St. Peters are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 1,310 sqft. Most buildings in this region are close to 1 stories. Most buildings in this area were built in 1999 and are Class B.