Most listings are in the $20's per square foot per year. The Wyandotte submarket is going through a a boost in rates. In the last 3 months, the median rate rose $21 per sqft per year.
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 region.
In the last 90 days, 7 listings have been posted online, which means leases most likley are going fast. You'll want to be prepared to make an offer immediately. About 29% of the listings in the Wyandotte are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 1,500 sqft. Most buildings in this market are close to 1 stories. Most buildings in this region were built in 1956 and are Class A.