Most listings are in the $20's per square foot per year. The Grand Rapids submarket is seeing a an increase in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 11% increase in rent.
Compared to the rest of the Grand Rapids market, the Grand Rapids submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 71 listings have been listed, so you'll want to check back regularly for new listings. About 1% of the listings 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,900 sqft. Most properties in this area are approximately 2 floors. Most buildings in this region were built in 1920 and are Class Class B.