The typical asking rate per listing is in the $10's per square foot per year. The Farmington region is going through a decrease in rates. In the last 3 months, the median rate decreased $0 per sqft per year. That's a 0% decrease in rent.
Compared to the rest of the Metro Detroit market, the Farmington submarket has lower rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 3 listings have been posted online, which means leases 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 1,850 sqft. Most buildings in this region are close to 1 floors. Most buildings in this region were built in 1958 and are Class B.