He cant be given a key without the occupants permission, etc.The main thing to look for is income.

Regarding due on sale clause, if you record the CFD you need to review your loan docs as it does add a lien / equity position to the title which the lender may per their docs need permission.

if you give them permission to say NO  you will get either a NO or a YES not a maybe which is just weasel out because they are afraid to say NO.. it worked in the 70s it worked in the 80s and I am sure it works today. 

Cities cannot pass rules that undo state statutes without permission from the state legislature. 

The previous owner did not have permission from the county to build the addition.

Did you give her permission to do that?

Anyone you give permission can access it and from anywhere and any devices. 

ETC would not allow purchasing of fractional notes (Lending Club peer to peer) yet other SDIRA's do (and there is nothing in ETC's rules that would suggest that doing so in not a permissible investment).

Where can I get information on tax history, rehub details, formerly granted permissions and any other valuable pieces of intel that I won't necessarily get on the Zillow, Trulia or other?

Besides, you would need some form of permission from them if you were going to contact the lender directly as well to bring current and hopefully save a deal.