I do not know what the credit is now, at one time it was $50 or $100 - really inconsequential in the grand scheme of things, but it was something they offered and it would be like pulling teeth to get the credits applied.  

Or you could wrap a bond around it but bond company will go after you once the lien has merit.

He has disclosed that the home has a mortgage bond of $45.8k ~R700k and he owes $7856 in rates.

They have been heading down since the 80s but unlike bond yields they can't go negative.  

In my mind, that is heavy metals and maybe some sort of treasury or muni bond (if you think interest rates wont go up).

If you hire a company who manages 200 units and has insurance and bonding you might be pretty good. 

I don't personally think so.The real estate market isn't "efficient" the way the stock and bond markets are.  

But for bigger work, such as changing out the electric panel, HVAC, sewage pipe etc,  I suggest you hire the licensed, bonded and insured.

Remember the site is marketing based, and a "background check" could simply mean they paid an online background checker and paid $2 for it, just like HomeDepot's Red Beacon where they advertised their list consist of "licensed and bonded" contractor, they simply go to your state's and verify license number, but that is it.

Certainly not as passive as investing in stocks and bonds, but much less work than wholesaling or fix and flipping.If you want to do fix and flips, why not do that now?