I would bring in a drafter or architect to assess it and see if you only need the building plans and pay permits: Building plans about $3k to $4k since everything is done... and city permits about $4k to $7k and make sure that you don't have to do anything major... front foundation could easily be $5k or more plus engineering work and stamp. : so, assess all systems and see for obvious things like : garage door, ceiling height, perimeter foundation and drainage, framing if you can, attic space, electrical, plumbing etc 4.

You'll want to talk to a local probate attorney to see how much time that could take.If the squatter is not making mortgage payments, you've got perhaps another month or two before the lender begins foreclosure proceedings.In your situation, I would approach the squatter to see inside the property to assess the condition.

Was able to negotiate some seller concessions based on a comprehensive property inspection and several needed repairs.

Dumb question, but is asking a police officer to swing by just to assess if there is weed (quick smell test) be too much/a violation of anything/asking for trouble?

That's a good assessment Bob.

Definitely make those assessments during inspection or prior to making an offer if you can to save yourself the time. 

The one to four is a very comprehensive contract that covers everything and even has room for special provisions when something out of the ordinary needs to be spelled out.When doing not so normal purchases like a sub-to, I dont use the TREC, but one that I created from several other contracts.

I respectfully disagree with your assessment of buyer's agent commissions and their implications.

The deal was contingent upon 60 day due diligence and a clean Phase 1 environmental assessment.

Assess risk.