My first question would be do you plan to rehab it to live there or rehab to then sell ? In this market, it may make more sense in Philadelphia to sell the shell as it is... shells are quite marektable and are in demand. We have a ton of experience being investors and work with a lot of investors and sell these types of properties.
If you plan on living in it, than that is a different story. You can contact Wells Fargo for their Rennovation Loan - I have several Wells Fargo contacts - feel free to email me from my site below. There are some other local banks that could lend on that type of property but just know this type of financing is not easy and can be tricky.
It just depends on your goals. The risk about rehabbing and then selling is that we have across many investors recently who have not got back on the sale side the costs that they have put out.... and know that what you expect the costs to be add - add $30,000 to $50,000 to that ! It always ends up more !
Feel free to email me if you have other questions or just want to sell the shell.