Most listings are in the $20's per square foot per year. The Kent County submarket is going through a an increase in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 14% rise in rent.
In the last 90 days, 163 listings have been posted online, so you'll want to check back regularly for new listings. About 87% of the listings in the Kent County 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,000 sqft. Most buildings in this area are approximately 1 floors. Most buildings in this area were built in 1961 and are Class Class B.