The typical asking rate per listing is in the $10's per square foot per year. The Brunswick region is going through a decrease in rates. In the last 3 months, the median rate fell $23 per sqft per year. That's a 59% decrease in rent.
In the last 90 days, 5 listings have been listed, which means new availabilities are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 220% of the listings in the Brunswick are subleases, so you might be able to find a shorter term or below market rent. 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 1,550 sqft. Most buildings in this market are around 2 stories. Most buildings in this market were built in 1989 and are Class A.