On average, listings lease in the $20's per square foot per year. The New Hampshire region is experiencing a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 3% decrease in rent.
In the last 90 days, 142 listings have been listed, so you'll want to check back regularly for new listings. About 2% of the listings in the New Hampshire 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 on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,600 sqft. Most properties in this area are close to 2 floors. Most buildings in this area were built in 1920 and are Class Class B.