On average, listings lease in the $10's per square foot per year. The Delaware region is seeing a an increase in rates. In the last 3 months, the median rate went up $16 per sqft per year. That's a Inf% increase in rent.
In the last 90 days, 12 listings have been listed, which means listings are probably 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 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 1,650 sqft. Most buildings in this market are approximately 2 stories. Most buildings in this region were built in 1946 and are Class C.