The typical asking rate per listing is in the $10's per square foot per year. The Grand Rapids region is going through a decrease in rates. In the last 3 months, the median rate fell $6 per sqft per year. That's a 25% decline in rent.
Compared to the rest of the Grand Rapids market, the Grand Rapids submarket has lower rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 67 listings have come on the market, so you'll want to check back regularly for new listings. About 3% of the office spaces in the Grand Rapids 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 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 2,400 sqft. Most buildings in this area are around 2 floors. Most buildings in this region were built in 1920 and are Class Class B.