Most listings are in the $0's per square foot per year. The Harrisburg submarket is going through a decrease in rates. In the last 3 months, the median rate fell $24 per sqft per year. That's a 100% decline in rent.
In the last 90 days, 0 listings have been posted online, which means spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About Inf% of the listings in the Harrisburg 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 sqft. Most buildings in this region are around 2 floors. Most buildings in this area were built in 2006 and are Class A.