The request for the GC was to build the structure (roughly 500 sq ft), or "dry in" the space - then I would take it from there and hire my own subs for the mechanical. 

Kitchen and bathroom mostly... little bit of dry wall, cabinets appliances, patch paint, vanity, mirrors countertops.

Just a caution about wells, it is important to know the depth of the well too because if you have a drought the well can run dry. 

Funny, as your reserves and dry powder levels drop down from cash buys, you work smarter and build them back up organically.I may not be the one to ask. 

Tenants don’t give a crap about keeping your place dry and seem to hate that fan like the plague....

I would not presume to advise you on what you should do, but if it were me, I would address the source of moisture, remove all affected soft surfaces and treat all other areas with a 50/50 bleach/water, let dry and apply at least one more time.

There's a reason wholesalers get a bad reputation - and it's not because they are making a profit without having skin in the game or don't have a license - it's usually because they move crappy deals, or they hang their clients out to dry when the deal goes bad, or they sell to people who really shouldn't be getting involved in the deal because they are not capable of handling the deal.Also - there's not one single definition of what "wholesaling" is.  

But after seeing nothing but a hand drawn sketch and some questioning of the "builder" it was clear he would be in way over his head.Building is never a cut and dried thing, so trying to get reimbursed for your extra expenses is unlikely.  

I don't know a lot about how auctions work--is financing for auctions pretty cut and dry?

I have also shown properties that are just dry-walled before, and have been able to paint an accurate + attractive picture for the prospect of what they will look like finished, securing the deposits.