The typical asking rate per listing is in the $10's per square foot per year. The Northwest Philadelphia submarket is seeing a decline in rates. In the last 3 months, the median rate fell $13 per sqft per year. That's a 41% decline in rent.
Compared to the rest of the Philadelphia market, the Northwest Philadelphia region has smaller rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 8 listings have been listed, which means leases are probably going fast. You'll want to be prepared to tour spaces as quick as possible. 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 2,190 sqft. Most properties in this region are close to 3 stories. Most buildings in this region were built in 1930 and are Class C.