The typical asking rate per listing is in the $30's per square foot per year. The Ann Arbor submarket is seeing a decline in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 6% decline in rent.
In the last 90 days, 67 listings have been listed, so you'll want to check back regularly for new listings. About 1% of the listings in the Ann Arbor are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,580 sqft. Most buildings in this market are approximately 2 floors. Most buildings in this market were built in 1965 and are Class B.