We then had to pull about 10 truck loads of trash out from the crawl of one building, and do some minor repair underneath for plumbing, subfloor and installed new vapor barriers for both units.

We then had to pull about 10 truck loads of trash out from the crawl of one building, and do some minor repair underneath for plumbing, subfloor and installed new vapor barriers for both units.

Her being late on the taxes doesn’t necessarily mean anything. 

The places I have used foam are things like crawl spaces or the underside of porches to insulate and vapor seal to prevent pipes from freezing. 

One way around this is to partner with an experienced rehabber in exchange for him/her being on the loan PLUS do the rehab, in exchange for a profit split.

so I have a house under contract, this is for my primary residence in rock hill sc that I intend to house hack, and in my due diligence period the inspector found evidence of powder post beetles and extremely high moisture under the house and I'm wondering what this could end up costing me if i get it treated and have a vapor barrier put into the house and put up gutters to get this house to qualify for the loan and then it proves the damage is a lot deeper than inspected like into the sub floor i included some pictures to show the damage the inspector found  still have a week and a half till my due diligence is up (2/26/19)the really wet part is the beam at the front of the house around where the front door is 

She is an up and coming musician (known) and I feel comfortable with her being solely responsible.

If yes, work with her, be diligent, timely and fair about the repairs.

If you think she has other positive compensating factors despite her being deceitful -- keep her. 

I would seriously consider putting down a vapor barrier, 3/4" plywood, a vapor barrier and LVP.