For instance, don’t trust anyone calling claiming to be from the IRS.

So for instance, it would be more "accurate" to say - this property is worth somewhere between $100k and $125k, instead of saying it is worth $100k, or $125k, or $112.5k.

I would think you could possibly use the RUBS system in the instance of the single metered house, but you would have to do checking whether you could;d do it legally. 

It's in the negotiations and bullet-proofing the transaction, that they really get to know my worth in most instances.  

I'm usually tipped off because they also pay the rent late.Here is a learning point:  I did have one instance where a tenant was current with their bills but shutoff utilities anyway. 

For instance, I'll bet your lease requires the tenant to provide 60 days intent-to-vacate notice (or less) at the end of the lease term.

Use your standard purchase agreement form and add the Seller Financing Addendum for instances where you need it.Some other search terms to use would be Seller Carryback and Seller Financing.

The latest instance has been this week (where the weather has not exceeded 75 degrees and mostly has been in the 60’s).

I'd argue that we've come too far and over reacted to the few instances where lenders illegally foreclosed back in the day. 

For instance, in the low housing complexes, I have a contractor that served as a maintenance person for over 20 years.