On average, listings lease in the $10's per square foot per year. The Strafford County submarket is going through a decline in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 4% decline in rent.
In the last 90 days, 22 listings have been posted online, which means spaces might be going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 800 sqft. Most properties in this region are around 2 stories. Most buildings in this area were built in 1910 and are Class Class B.