Outlets/switches may need to be moved or can possibly be eliminated. 

I experienced this myself when I had 25 units a few years ago.You will have evictions, turnover costs, unexpected repairs/maintenance, CapEx, vacancy, etc.

Retail price $20 thru outlets.  

Any lender with multiple outlets will be able to help you.  

Then go to the Lowe's outlet in Avon and get a cheap set for less than $500 total. 

This post was more for cases of extremely ridiculous reviews like 4 stars because "one of the bedroom doors was squeaky and the outdoor outlet wasn't close enough to charge our Tesla."

- What should we look out for during the walk-through to mitigate unexpected expenses?

If you want to buy, give a couple Sears Outlets a call, they normally have a couple sets around and since they likely sit for a decent amount of time the store might be motivated to drop the price a bit to move it.

It's tough when unexpected costs pop up, but those experiences definitely make us sharper for the next deal.Switching gears from renting to selling was a smart move given the circumstances.

You can plug the device into the wall outlet and check the functionality of the wiring.