On average, listings lease in the $10's per square foot per year. The Dover submarket is experiencing a decline in rates. In the last 3 months, the median rate fell $4 per sqft per year. That's a 16% decrease in rent.
In the last 90 days, 9 listings have been made available, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 8,500 sqft, there are still 0 new listings below 2,000 sqft. Most buildings in this region are around 2 stories. Most buildings in this area were built in 1968 and are Class C.