Most listings are in the $30's per square foot per year. The Town and Country region is going through a an increase in rates. In the last 3 months, the median rate rose $31 per sqft per year.
In the last 90 days, 24 listings have come on the market, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. About 8% of the listings in the Town and Country are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 3,050 sqft, there are still 0 leases below 2,000 sqft. Most properties in this region are around 6 stories. Most buildings in this area were built in 1988 and are Class B.