On average, listings lease in the $20's per square foot per year. The Princeton Junction region is seeing a an increase in rates. In the last 3 months, the median rate increased $26 per sqft per year. That's a Inf% rise in rent.
In the last 90 days, 10 listings have been posted online, which means spaces most likley are going fast. You'll want to be prepared to make an offer immediately. 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 1,610 sqft. Most buildings in this area are close to 2 floors. Most buildings in this area were built in 1984 and are Class C.