"The IRS classifies renting out property as a passive activity unless you're a full-time real-estate professional.

Given that the parking situation has been alleviated I no longer have to classify it as an Inn.

@Martin Graf just check property records to see how it is legally classified (chances are a SFH).Look for Joe S (for some reason can't tag him), who is an expert in that area of Philly.

Another possible pitfall is Dodd/Frank and the potential for being classified as a mortgage lender (you are intending to loan against the property). 

The insurance company does not underwrite the contractors but they take the risk to some degree when the company insures the GC.No matter what you call yourself, the work you do and how you pay people will be the main factors in the insurance companies classifying your business.

@Jackson LongDepends if your business is classified as active or passivePassive losses can only be netted against passive gainsActive losses are ordinary income 

If you created a software, that categorize things, how is it any different than the 100s of platforms such as Stessa, QBO, Sage, Wave, Xero, Freshbook, and many others.Owner still need someone to classify them to the proper place and reconcile the accounts.

But regardless if it is 12 or 20 and regardless if yours is 100 or 200, and regardless if you classify me as a rehabber and not a professional wholesaler, that is irrelevant.

Thus if the Greek default is declared a default, the 5 largest US banks need to pay up for the debt insurance (they sold insurance on the debt, payable if the event is classified a default by the ISDA) to the counterparties who bought the insurance.

you are right it is absolutely a BS scam to force you into renting to them.The pet, itself, is not a protected class, BUT, it's human owner that has gone through the trouble of getting themselves classified as emotionally traumatized, to the point of needing an emotional support animal, is absolutely a protected class.Their is a bunch of federal and state law regarding this, you just have to be extra careful about exactly what you say and how you turn them down.Also, my apologies to those of you that have a sincere need for an emotional support dog prescription, like PTSD patients, especially some of our US Veterans.