In the last 90 days, 33 listings have come on the market, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. About 3% of the listings in the Portsmouth are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 2,550 sqft, there are still 0 new listings below 2,000 sqft. Most buildings in this region are around 3 floors. Most buildings in this region were built in 1978 and are Class B.