Most listings are in the $10's per square foot per year. The Manchester region is seeing a a boost in rates. In the last 3 months, the median rate went up $18 per sqft per year.
Compared to the rest of the Greater Boston market, the Manchester submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 237 listings have been listed, so you'll want to check back regularly for new listings. About 27% of the listings in the Manchester 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 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 2,080 sqft. Most properties in this market are close to 2 stories. Most buildings in this area were built in 1920 and are Class Class B.