The typical asking rate per listing is in the $10's per square foot per year. The Howell submarket is going through a an increase in rates. In the last 3 months, the median rate rose $18 per sqft per year.
Compared to the rest of the Metro Detroit market, the Howell region has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 11 listings have been listed, which means spaces are probably leasing quickly. 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 870 sqft. Most properties in this area are approximately 2 floors. Most buildings in this market were built in 1920 and are Class A.