On average, listings lease in the $10's per square foot per year. The Kirkwood submarket is seeing a decrease in rates. In the last 3 months, the median rate fell $10 per sqft per year. That's a 38% decline in rent.
In the last 90 days, 12 listings have been listed, which means listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 58% of the available space in the Kirkwood are subleases, so you might be able to find a shorter term or below market rent. 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 290 sqft. Most properties in this area are close to 2 floors. Most buildings in this area were built in 1989 and are Class A.