The typical asking rate per listing is in the $20's per square foot per year. The Portsmouth region is going through a decrease in rates. In the last 3 months, the median rate fell $7 per sqft per year. That's a 22% decrease in rent.
Compared to the rest of the Greater Boston market, the Portsmouth region has more expensive rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 64 listings have been posted online, so you'll want to check back regularly for new listings. About 2% of the listings in the Portsmouth are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 2,640 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this market are close to 2 floors. Most buildings in this area were built in 1920 and are Class A.