Wanted input on how much might be involved here to remediate, and what range of costs I am looking at, I fully understand that once the drywall is cut open there might be who knows how much damage to the framing, insulation, and whether it is worth it to even get involved with this property.

Sometimes they get deleted or blocked.  

Accepting money at any time doesn’t waive our right to damages, to past or future rent or other sums, or to our continuing with eviction proceedings.

It's worth a little money to prevent damage if they're being uncooperative.

Avoiding Foreclosure: By stepping in with mezzanine debt or preferred equity, investors can help projects avoid foreclosure, which can be more costly and damaging in the long term.

I highly doubt a day or two will cause that much of a damage.

**Insurance Issues**: Ensure the property insurance policy is updated to reflect the change in ownership to protect both parties in case of damage.3.

Just evict them with damages, clean it all up, and rent it out again.

There was a judgment about some BC buyer who didn't close and they owed 350k in damages.

It helps you build the building blocks of owning real estate.