The typical asking rate per listing is in the $20's per square foot per year. The Ann Arbor submarket is going through a decline in rates. In the last 3 months, the median rate decreased $2 per sqft per year. That's a 6% decrease in rent.
In the last 90 days, 52 listings have been listed, so you'll want to check back regularly for new listings. 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 1,960 sqft. Most properties in this area are approximately 2 floors. Most buildings in this market were built in 1964 and are Class B.