Submettering is an very viable option($$ knob and tube(1961 construction) ) and there is 1 water heater per building(3 building=14 units)(individual AC units).

With the hose hooked up, the water froze inside the tube that runs outside, cracking it.

They understand they can/will lose their " free ride " if they tear the place upAll the best  I had two tenants in Detroit that were SO Mean just think some of the U tubes you see about fowl language etc..

think about your first 1 to 2 to 5 to 10 years of ownership of a property, and the difference between:-a 1-year old furnace under warranty, and a 35 year old furnace-a house with central air, and a house without-a house with a brand new roof, and a house with a 25 year old roof-a house with a knob and tube wiring, and a fully rewired housewhich is going to have more capex? 

If your hoping for repeat guests (where they pay full rate and you don’t have to share it with Airbnb or VRBO), then provide hotel size shampoo, conditioner, body wash, small toothbrush and small tube of tooth paste.  

I won't have to do this again for 20+ years.Electrical in most of these homes is usually sufficient unless you still have knob and tube. 

Bright Investor was  mentioned in a yu tube video.

You tube pace morby testimonials and he shows how this is a win/win for buyer and seller.

If it was knob and tube, or aluminum or 60 amp service, a bit of a different comment.

You are interested in real estate investing and are looking for resources to develop your knowledge.I work with a lot of doctors and busy, high income earners to help them build real estate portfolios to slow down at work and offset some of their W-2 or business income.Some books to consider are Multi-Family Millions by David Lindahl, Investing in Real Estate with No and Low Money Down by Brandon Turner, and Equity Happens by Robert Helms & Russell Gray.Some You tube channels to follow include Get Rich Education, Ken McElroy, Jason Hartman, and the Real Estate Guys Radio Show.Yes, until you are making attending physician money, I would house hack the house you live in by renting rooms or buying a duplex as a primary residence with low money down.To Your Success!