On average, listings lease in the $10's per square foot per year. The Salisbury submarket is seeing a an increase 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 listings 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 have to consider a longer term lease. There aren't many listings below 2,000 square feet posted, 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 buildings in this region are around 2 floors. Most buildings in this market were built in 1979 and are Class B.