The typical asking rate per listing is in the $20's per square foot per year. The Northwest Philadelphia region is experiencing a decrease in rates. In the last 3 months, the median rate fell $0 per sqft per year. That's a 0% decline in rent.
Compared to the rest of the Philadelphia market, the Northwest Philadelphia region has lower rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 14 listings have been listed, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. About 36% of the available space in the Northwest Philadelphia 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 420 sqft. Most buildings in this market are approximately 3 floors. Most buildings in this area were built in 1905 and are Class C.