On average, listings lease in the $30's per square foot per year. The Portsmouth region is experiencing a a rise in rates. In the last 3 months, the median rate rose $11 per sqft per year. That's a 55% increase in rent.
Compared to the rest of the Greater Boston market, the Portsmouth submarket has higher rates, and you'll need to make a great offer to be in this hot submarket.
In the last 90 days, 64 listings have been made available, so you'll want to check back regularly for new listings. 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 1,540 sqft. Most buildings in this area are close to 2 stories. Most buildings in this area were built in 1920 and are Class A.