On average, listings lease in the $10's per square foot per year. The Sussex County region is going through a decline in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 13% decrease in rent.
In the last 90 days, 12 listings have been posted online, which means spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 8% of the listings in the Sussex County are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 3,060 sqft, there are still 0 listings below 2,000 sqft. Most properties in this market are around 2 stories. Most buildings in this area were built in 2007 and are Class A.