But I'm confused/curious as to why this Electrical Contr is so willing to burn bridges over couple of grand, is he just stupid?

I went to a public hearing on a red card that the town fabricated because a structural inspector decided to do an electrical inspection early.

Much easier for the electrical to snake around the plumbing than vice versa...  

Have done tons of cleanouts on evictions too, nothing surprises me anymore on how some people can live.The hot water tank had things growing in the hot water overflowing, the refrigerator was tucked in a back shed area where everything inside had liquified. 

You think through the major systems in the house (roof, exterior or tuck pointing, hvac, plumbing, electrical, unit turns, common areas) and if they are all new you should be good for a few years (5-10). 

A good HI will go over your house with a fine-toothed comb.If you can find an Ex (or Retired) HI that is also Certified, that would be even better, since they will understand the structure/electrical/plumbing systems in more detail than a regular HI...

If you are doing a BRRRR and leaving older items in place, not updating electrical and plumbing, I think you need $300 t0 $350 if you are just getting started.

Lawn, snow, electric, gas, water ???

For example, focus on demo and structural work in month 1, plumbing and electrical in month 2, and finishing (flooring, paint, etc.) in month 3.

@Ori Skloot can you give more details on the electrical and plumbing work you did?