On average, listings lease in the $10's per square foot per year. The Kent County region is seeing a a rise in rates. In the last 3 months, the median rate rose $16 per sqft per year.
In the last 90 days, 0 listings have come on the market, which means leases most likley are going fast. You'll want to be prepared to make an offer immediately. About NaN% of the listings in the Kent County are subleases, so you will probably have to consider a longer term lease. 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 2,100 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this market were built in 1951.