In the last 90 days, 9 listings have come on the market, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. About 22% of the office spaces in the Wilmington 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.
Even though the median size is 4,630 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this area are around 2 stories. Most buildings in this area were built in 1983 and are Class B.