Most listings are in the $20's per square foot per year. The North Philadelphia East region is experiencing a an increase in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 2% rise in rent.
Compared to the rest of the Philadelphia market, the North Philadelphia East region has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 3 listings have been listed, which means new listings are probably going fast. You'll want to be prepared to make an offer immediately. About 200% of the listings in the North Philadelphia East are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,000 sqft. Most buildings in this region are approximately 7 stories. Most buildings in this market were built in 1971 and are Class B.