In the last 90 days, 26 listings have come on the market, which means listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 69% of the available space in the Portsmouth are subleases, so you might be able to snag a great spot on a short term. 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 3,300 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this area are close to 2 floors. Most buildings in this area were built in 1984 and are Class B.