You’ll pay a dear price for privacy and security but peace of mind may be more valuable to you.

Another indicator of a successful GP is the quality of their investor relations department.

I'd contact the code enforcement department for your city as they would be able to give you the current correct answer.Typically it is around 150sf for first person and 70sf-100sf for each additional person.

When i ask my property manager about it the response is that i must talk to rates department. rates department blows smoke and tells you they cant control airbnbBut wait there's more! 

-Jake Hey mate,These guys are the best IMO and have all stood the test of time:REI NationJWB Spartan InvestThere are others but don't know much about them.I have stalked the above 3 for many moons 👍Much success Dear Engelo, Perfect.

Your price point of $1,100 puts you below nearly all of the competition mitigating that.The Philly L&I department has a terrible reputation.

While they are legal from a building department view point, if there are complaints from neighbors about you renting it long term, it could create issues with zoning.  

A DIY way of starting your investigation is visit the building department and see if they have any records for the property on file.

@Michael StatCheck with the building and planning department. 

Every local bank will have a commercial lending department from where construction & renovation loans, other commercial lending is initiated.