On average, listings lease in the $10's per square foot per year. The Salisbury region is seeing a a rise in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 9% rise in rent.
In the last 90 days, 38 listings have been listed, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 3% of the listings in the Salisbury are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 1,420 sqft. Most properties in this market are around 2 floors. Most buildings in this market were built in 1979 and are Class B.