Most listings are in the $20's per square foot per year. The St. Clair County region is experiencing a a boost in rates. In the last 3 months, the median rate increased $9 per sqft per year. That's a 54% rise in rent.
Compared to the rest of the Metro Detroit market, the St. Clair County submarket has more expensive rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 28 listings have been listed, which means office spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 4% of the office spaces in the St. Clair County are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 550 sqft. Most buildings in this region are around 1 floors. Most buildings in this region were built in 1972 and are Class B.