Also, where I invest there are lots of my tenants with machining and manufacturing jobs that have dramatically become the norm renting from me in solid C+ and B class neighborhoods.  

The machines will pay for themselves quickly.

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As a wholesaler, people set up a well oiled machine with data, systems, and a VA for <$2k/mo.

However, the flip side of that is that if you get it wrong, there isn't just one cog in the machine that needs replacing.

This purchase was motivated by the failed $10,000 turbo unit in the old machine, and the pressure to install 170 sewer systems per season means down time is not acceptable.In addition to the costly gear, the indemnified crews have a certain amount of pricing power over any client that needs the work done.

It wasnt cheap though , machine , attachment and delivery , $1300 for the weekend .

There are several very well oiled large machines you will be competing with. 

For the last 2 years, you have been dealing with the impersonal collection machine of the loan servicing department for a Fortune 500 bank.

Multifamily properties can be good locations for machines.