If neither of you have keys to the unit, that is definitely something to remedy immediately.  

I plan to remedy the issues and place a tenant.

We got an email last night that the buyers financing ran into a "glitch".We are told they are seeking another lender, but are waiting to see if their lender can remedy the situation... however they are confident we will not close in 4 days as previously committed.

I wouldn't close on a house with a CO, or without at least a temporarily CO detailing whatever may be required to get a real CO (like if you're buying a house under an agreement and understanding that you'll remedy or pay for whatever issues the house may have).

If he didn't finish the job, I wouldn't pay him another penny until he does -- you've already paid 90% of the job, and I wouldn't pay the last 10% until the job is completed.As for the extra $5300, that's up to you if you want to pay it or not, and if you want to risk the contractor not completing the job (if he hasn't already) or potentially putting a lien on the house or taking you to court (both of which you should be able to remedy if you have a reasonable contract for the $31K price).Long story short, consider this a good learning experience, and be sure to clearly define payment/draw schedules in the future, along with a clear process for change orders.

I also own a business in Residential Property Services- specifically, mold remediation, waterproofing and other light remodeling.My goal is to create a business that rehabs and flips houses and also buys houses for long term rentals.

A responsible ferret owner will be supervising them anyways due to the fact that if these little babies consume any foreign objects (which includes anything at all that isn't food) it could result in a costly remedy or worse, death.  

Also in case I flip I know what issues the buyers inspector will find and remedy it now.Also my inspector turned out to be DOOMS DAY inspector, good for me as buyer.

Foreclosure is the remedy banks have to collect on what is due under the note when a default occurs.

But in general, yes, judicial simply means that the foreclosure is handled like a lawsuit, with both parties having certain rights and remedies, which they can assert through court proceedings.Usually borrowers don't try to fight the foreclosure, so the lender eventually gets the "final judgment" of foreclosure, after which the property is sold at auction (usually on the courthouse steps).