The typical asking rate per listing is in the $20's per square foot per year. The Warren submarket is going through a a rise in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 7% increase in rent.
Compared to the rest of the Metro Detroit market, the Warren submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 29 listings have been made available, which means listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 2,920 sqft, there are still 0 new availabilities below 2,000 sqft. Most properties in this area are close to 1 stories. Most buildings in this area were built in 1970 and are Class B.