On average, listings lease in the $20's per square foot per year. The Newtown region is going through a a rise in rates. In the last 3 months, the median rate increased $29 per sqft per year.
In the last 90 days, 2 listings have been listed, which means office spaces are probably 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.
Even though the median size is 2,840 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this area are close to 3 stories.