Is there a book I can read or a podcast I can listen to that breaks down the steps for a rehab - starting with how to pick a contractor, how to prepare a SOW, what are the steps in the rehab (ie first you fix the roof, foundation , windows and exterior doors and then plumbing, etc.) , what work can be done at the same time (ie plumbing and electrical) etc.   

However your returns are probably even lower if you factor in upcoming major expenses like an hvac or roof replacement.It really depends on your goals. 

If you're good with these numbers, get a house inspection to find out if there are any other problems with the roof, foundation, HVAC, etc.Lastly, keep in mind that a big job like renovation is much more difficult if you're living in the house while work is being done - doubly so if you're doing the work yourself while living there.All the best with it!

Why are you buying where the neighboring buildings don’t have roofs?

I believe they stopped using knob and tube wiring sometime in the 40s.Roof - Of course in that amount of years, most likely the roof has been replaced at least a couple times, but this is also a big ticket items to look closely at.Plumbing - I think it was sometime in the 80s when PVC pipes were starting to be widely used.  

Some investors want a truly hands-off approach, and in that case the more units under one roof, the better.

Ranches have larger roofs so more water shedding from the roof during a rain.

If a seller says a home has a new roof, deck, addition, etc. and want to get credit for the value add, but there's no permit to back up the claim, forget it.

This can tell me a lot about the age of the plumbing, roof, HVAC, etc before actually walking it.

Something else I learned recently, is that theres a ton of homes for sale with solar on the roofs, and that can be a very bad thing.