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?  

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. 

A couple houses that I've had with vinyl replacement windows have had vacuum leaks between the panes and have clouded up with moisture between the glass. 

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.

I was able to re-finance house a year later and buy a gently used car.

Search for your local or regional conference.Your goal here is to meet as many people as you can, and gently let them know you are seeking a position with a real estate development company, and ask if they might know of anyone.

I just bought a bunch of this for a rental unit and it looked extremely durable (10 mm thick, resistant to moisture etc).

So, if you're planning on acquiring properties in affected areas, I would suggest you become an expert at moisture mitigation, mold removal, have the capital to weather another hurricane and the possible event of your insurance provider declaring bankruptcy and going belly up after such an occurrence.Consider this: https://www.theatlantic.com/technology/archive/2017/08/why-cities-flood/538251/*Houston, including its roads, parking lots, sidewalks, and other pavements, along with asphalt, concrete, brick, stone, was originally developed on land that, not for it's development, would have naturally absorbed water.

A little moisture in the basement: It held 5 foot of water last springI have seen a ton of those "just needs carpet and paint" phrases, and only found one to be true.