Most listings are in the $10's per square foot per year. The University City region is going through a a rise in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 13% rise in rent.
In the last 90 days, 12 listings have been made available, which means office spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 2,640 sqft, there are still 0 new availabilities below 2,000 sqft. Most properties in this area are around 2 floors. Most buildings in this region were built in 1960 and are Class B.