It's less susceptible to moisture-related changes and paints up nicer than common wood species.

Hello,Our property located in Fort Worth,TX had a foundation repair after which it was recommended maintaining a constant level of moisture in the soil near and under the house (by placing a soaker hose on each side of the foundation no farther than 12'' from the edge of foundation to water DAILY during hot and dry months).Our property management company wrote a letter to our tenant explaining this, however I can not guarantee tenant complies. 

I am currently working on a condo where moisture got in, walls looked ok and after closing we detected mold crawling and spreading in the back of the walls 4ft high!

This kind came with the padding already attached and I just put down a moisture barrier under that. 

That means he will likely have plausible deniability for the damage, as he can just claim that his contractors did the make-ready and never informed him of any mold/moisture issues.

Any bank will normallly let you make an offer contingent on a moisture termite inspection.  

I'm not familiar with Allure flooring, but if it's practically water proof as noted by @Edward Mccracken, then, as he indicated, the moisture is likely collecting from below the sub-flooring (be it a crawl space, basement or sleepers on a slab) and building up underneath the Allure (e.g., waterproof = impermeable).There doesn't need to be visible standing water for this to happen either.  

Bathroom not bad needs exhaust fan broken n u can start see dots of mold from moisture. 

Like electrical, plumbing, and dangerous chemicals.Also while contractors are okay at generating bids, are they going to be testing for moisture in the walls?  

Mold appears to be limited to drywall in a couple areas (wall behind a shower that was leaking and has been repaired, wall behind the washing machine).If remediation is $5k for a small job (pulling that out of the air), I doubt seasoned flippers routinely have this professionally remediated, especially when simply tearing out drywall/replacing/wiping down with bleach after correcting the moisture problem is sufficient to correct it.