His advice for them is spot on.

There is a crawl space below.

If I know what I'm looking for, it's a breeze spotting a phony.  

Not sure how to spot the difference on the wall types- I'm gonna rely heavily on my contractors for sure.

Btw, the Real Dealz episode with Tucker M. sounded good and congrats on your new spot in Vegas. 

What I find is that I'm more focused and willing to call things as I see them without feeling like I might offend someone.I'm also better at spotting deals and have more confidence in knowing what I want out of them.None of this means that I don't make mistakes, but I am better at recognizing them and solving the issues. 

I invest in off market properties and have always been a little worried about going into properties with hidden big ticket problems as the wholesalers dont give enough time - plumbing and mold are big on that hidden list, in my opinion.I can kind of approximate plumbing repairs but wanted to know if there are any easy ways to spot any hidden mold.

Well, I had a plumber go out to fix the issue, which was 9 busted pipes, and luckily he got to it before the water in the crawl space reached the furnace.  

Look for cracks on the sides of the house, trees whose roots may be too close to the house, leaning structures attached to the house, these are basic things you will be able to spot without an inspector.  

Any change in personal situation or the market puts you in a really tight spot.