On average, listings lease in the $10's per square foot per year. The Wyandotte region is going through a an increase in rates. In the last 3 months, the median rate rose $16 per sqft per year. That's a Inf% rise in rent.
Compared to the rest of the Metro Detroit market, the Wyandotte region has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 7 listings have been posted online, which means 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 1,870 sqft. Most buildings in this area are close to 1 stories. Most buildings in this area were built in 1956 and are Class C.