I was thinking this might be a way to reduce my maintenance exposure or recoup costs by creating a 2nd revenue stream with future tenants since none of the properties are large enough to justify coin operated machines.

Refrigerators and washing machines that are 20 years old keep on plugging away.

@Brie Schmidt, you are a machine :) Do you build those move-out charges into your lease or through another agreement your tenants sign?

TK operations usually have a good lead generation machine going which is why you can still cash flow in the back end.If you have the time/connections to find really good discounted properties, rehab, and oversee that work, then i'd go for it.

He dug out the whole area much deeper, used real professional machines and laborers and it has been a dream ever since.

Washing machine in the kitchen and dryer in a shed in the backyard.

Tell them there has been a complaint and they need to be removed and then give them a date.As for the washing machine, tell them the same thing. 

Techie cog in the machine. 

You have to make sure all windows are closed up when running the machine.

The legal costs of starting information services aren't trivial, and being an advisor is far thornier, and may even require licensing.As for machine learning, artificial intelligence and APIs, note that they do not fix GIGO (garbage in, garbage out).