Most listings are in the $10's per square foot per year. The Grand Rapids region is going through a an increase in rates. In the last 3 months, the median rate increased $19 per sqft per year.
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 discounted region.
In the last 90 days, 67 listings have been listed, so you'll want to check back regularly for new listings. About 63% of the office spaces in the Grand Rapids are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 290 sqft. Most buildings in this market are around 2 stories. Most buildings in this area were built in 1921 and are Class Class B.