Compared to the rest of the Philadelphia market, the West Philadelphia submarket has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 22 listings have been listed, which means new availabilities most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 5% of the listings in the West Philadelphia are subleases, so you will probably have to consider a longer term 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 1,830 sqft. Most properties in this market are approximately 3 stories. Most buildings in this area were built in 1975 and are Class B.