Most listings are in the $20's per square foot per year. The North Philadelphia region is seeing a decline in rates. In the last 3 months, the median rate decreased $2 per sqft per year. That's a 7% decline in rent.
Compared to the rest of the Philadelphia market, the North Philadelphia submarket has smaller rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 31 listings have been made available, which means leases 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 posted, so finding a space for a small business might be tough.
Even though the median size is 3,700 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are around 4 stories. Most buildings in this region were built in 1937 and are Class B.