Moisture is getting in and causing it to flake off DOORS (Interior): Adjusted a) the entry door to the 2nd floor left end bedroomb) the entry door to the master bedroom(2) The left bi-fold door for the laundry room needs to be adjusted to prevent it from dragging on the floor, whichcould result in damage to the door and flooring.

And I put a dehumidifier in the garage to help get rid of any moisture. 

For example should I make the place look pretty or spend a chunk of money preventing moisture in the crawlspace?

In general, way beyond normal moisture (dankness - I don't mean marijuana either) smell would worry me.  

We have to install on all our permitted renovations, and have had zero issues with bathroom moisture since using them.Not sure how that'd work in a whole house situation, but something to consider if you decide to seek a technological solution.Good luck!

I have a property under contract to close approximately jan 30. The pipes were stolen prior to contract resulting in water gushing inside and wet carpets etc. The humidity is high and carpets are not going to dry out....

You can add temperature and moisture sensors too. 

@Bob Hucker, moisture appears to be the big issue... not uncommon on wood door jambs like that one... in my experiences, "sawdust" like that usually meant I would find carpenter ants.  

We removed the floor boards and found moisture coming up thru the concrete floor underneath. 

The bathroom doesn't have a vent so it gets moisture building up.