On average, listings lease in the $70's per square foot per year. The Portsmouth submarket is seeing a a boost in rates. In the last 3 months, the median rate went up $57 per sqft per year. That's a 264% increase in rent.
In the last 90 days, 16 listings have been listed, which means leases might be leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 7,390 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this market are around 2 floors. Most buildings in this market were built in 1978 and are Class C.