Most listings are in the $10's per square foot per year. The Ypsilanti region is going through a a rise in rates. In the last 3 months, the median rate rose $15 per sqft per year.
In the last 90 days, 4 listings have come on the market, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. 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 1,600 sqft. Most properties in this market are close to 1 floors. Most buildings in this area were built in 1950 and are Class Class B.