Everything g is situational and we can't make JUDGEMENT based off factors we don't know.

There are specific definitions for each, but it is a judgement call.

The properties that usually sits in the market 21+ days will allow you have more leverage against the seller vs a house that just got listed and the chances of going into a bid war will be high. the best way to find out is really to just tour the house with your agent and just rely on your self-judgement.

So I went against my better judgement that morning when I woke up before I had to leave for work.

If they don't serve the notice in person and physically hand the notice to the resident, then you can only get a judgement for possession and not for monetary damages.

Compare that to your case and note any discrepancies.I would finish the eviction for this tenant for sure, and even if they'll never pay, see if you can get an un-paid money judgement on them in your county. 

Judgements, Liens, etc.

For your case you knew the project had no permits which means the city will need you to either get a judgement from an engineer that it has been built to code or to remove all unpermitted additions.

I have found in my state (PA), that many paid background checks are unreliable but my states website will show me evictions, civil judgements, criminal cases and even summary offenses like a speeding ticket.

If confessed judgements are legal in your state you may get here to sign one giving you power to get a judgment against her if she does take money out.