For example,  providing a heating source for your tenant is your responsibility as the landlord. 

This is the sum of all of the sources of gain including not only cash flow and appreciation but also depreciation and amortization of the loan. 

A PMC is great to use not only for all these items but also really being a trusted source for vendors too etc. 

The data @Devin Conley posted is pretty solid from my experience (I do not know Devin nor how he sourced the data, just going by my own investing experience).  

: Experts at sourcing viable properties to market for sale. 

Is Real Estate Bees a legitimate and good source for leads? 

They agreed to pay in accordance to the lease and failure to manage to the lease is the #1 reason why landlords fail (Source: American Apartment Owners Assn).Cowboy up and stop having the tenant control your ROI.Best.

I think the real estate professional strategy works if it is your primary source of income.   

However, I am seeing more interest in MTR's and have a colleague that does well buying condos and renting out to traveling medical workers and foreign exchange students.  

Going to want to cast a wide net at first and figure out where you can best source your MTR leads from