Best to do your homework and really learn all of the neighborhoods, build a power team, or partner up with an investor that knows the market and has a team in place.As for how I'm handling the high taxes...

You could use something like this (https://sense.com/) to track electricity and reconcile with the tenant each month...not sure about water though.  

Does he have someone with power of attorney who is looking after things? 

Slate roof (insurance company hated that, I've posted on here before), old galvanized steel or cast iron pipes that were failing piece-by-piece, old electrical with tenants complaining about tripping circuits, cracked foundations and water in the basement, and on and on. 

Also, these are all-electric homes with no gas lines.

Added refrigerator and new stove (converted from gas to electric stove).

Partnering with them in different aspects has showed them the power of real estate investing.How did you finance this deal?

@Helen Zhang Try Elliot Electric supply.

Faraday Future is a new electric car company that is building a huge manufacturing facility, (not putting a lot of emphasis on this because it can possibly flop you know like Fisker).

It's especially powerful if your current age plus a thirty year mortgage means that you will be in retirement age and still have mortgages to pay, but knocking a decade off of that puts you in retirement early.Here it is, it's really simple:Take whatever your P&I payment was last month.