On average, listings lease in the $10's per square foot per year. The Salem submarket is experiencing a a boost in rates. In the last 3 months, the median rate went up $16 per sqft per year.
In the last 90 days, 91 listings have been made available, so you'll want to check back regularly for new listings. About 51% of the available space in the Salem are subleases, so you might be able to sign a shorter term by taking over a previous 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 1,200 sqft. Most buildings in this market are close to 2 stories. Most buildings in this market were built in 1984 and are Class A.