On average, listings lease in the $20's per square foot per year. The Delaware region is going through a decrease in rates. In the last 3 months, the median rate decreased $5 per sqft per year. That's a 20% decrease in rent.
In the last 90 days, 213 listings have been listed, so you'll want to check back regularly for new listings. About 1% of the listings in the Delaware are subleases, so you will probably have to consider a longer term lease. 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 2,370 sqft. Most buildings in this market are approximately 2 stories. Most buildings in this market were built in 1986 and are Class A.