On average, listings lease in the $20's per square foot per year. The Detroit region is seeing a an increase in rates. In the last 3 months, the median rate rose $7 per sqft per year. That's a 29% rise in rent.
Compared to the rest of the Detroit market, the Detroit submarket has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 105 listings have come on the market, so you'll want to check back regularly for new listings. About 1% of the available space in the Detroit are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 8,490 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this region are close to 2 stories. Most buildings in this market were built in 1938 and are Class B.