On average, listings lease in the $90's per square foot per year. The Media region is going through a an increase in rates. In the last 3 months, the median rate rose $93 per sqft per year.
In the last 90 days, 11 listings have been listed, which means listings 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.
The standard measurement for office space in this area is around 170 sqft. Most properties in this market are close to 3 floors. Most buildings in this area were built in 1966 and are Class B.