Most listings are in the $10's per square foot per year. The Bangor region is going through a a rise in rates. In the last 3 months, the median rate rose $16 per sqft per year. That's a Inf% increase in rent.
In the last 90 days, 21 listings have been made available, which means listings most likley are 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 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 1,280 sqft. Most buildings in this region are close to 2 floors. Most buildings in this area were built in 0 and are Class Class B.