Most listings are in the $10's per square foot per year. The South Lyon region is going through a decrease in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 7% decrease in rent.
Compared to the rest of the Metro Detroit market, the South Lyon submarket has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 1 listings have come on the market, which means new availabilities most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 600 sqft. Most properties in this area are close to 2 floors. Most buildings in this market were built in 1978 and are Class B.