@Stephen E. 

But if it's the norm in your area then the only reason not to charge it is good will and common sense.Frankly, this is no different than monthly pet rent; 10 years ago when I was renting it was just becoming popular to charge pet rent, and people were willing to look around for places that didn't charge the fee.

The Delaware Valley Investment Group is one of the more popular ones with subgroups today. 

It appears erentpayment is popular on this site but they do not appear to have a contract component. 

I strongly recommend attending this meetup group:http://meetu.ps/e/Dzdgr/CtQjW/aAttended their holiday party last weekend and it was an awesome place to network with other REI, HML’s, Wholesalers, GC’s and others.

The same questions is asked on Sch E as you would be asked on a partnership or S-Corp.

We use E-Rent Payment and it has worked out great.

I believed this years ago and it's only gotten worse since then.I'm surprised cold calling hasn't become popular sooner, but in this last year it seems to be getting a bit more attention.  

IN FACT 95% of economists:https://caanet.org/app/uploads/2016/02/Jan2016_Ren...This is one by "The Economist" which is a popular economy magazine:http://www.economist.com/blogs/economist-explains/...A housing/planning and urban development website:http://marketurbanism.com/2016/04/02/rent-control-...Foundation for Economic Education:https://fee.org/articles/the-case-against-rent-con...Business Insider:http://www.businessinsider.com/does-rent-control-w...CEI:https://cei.org/blog/rent-control-why-it-so-bad

Put one time expenses on "line 19: see statement X" of schedule E, and keep all invoices.