I do not believe the basement on this property will comply with those regulations as an ADU. 

I don't know what the rules are in NLV, LV has rules that are pretty easy to comply with from what I have read, Unincorporated Clark County has essentially banned STR (although that doesn't seem to stop people), so just be careful about where you are buying. 

The property now needs to comply to new building codes, hence, the Certificate of Compliance.

If they want to rent from you then they will figure out how to comply with your policy.

Bank (which does their own vetting) to comply with anti-money laundering laws, CFPB requirements, Fair Debt Collections, and Gramm-Leach-Bliley regulations.

An Illinois landlord would be under zero obligation to re-negotiate anything, and could treat any failure to comply with the terms as a breach, subject to relief from a forcible entry and detainer action (Eviction). 

This means that you would comply with Regulation D, file a Form D and you would only be obligated to complete notice filings in the states in which you sold securities. 

Give tenant 2 notice the garage door must be kept closed and failure to comply will result in loss of use.. 

Ridiculous Example - If you verbally agreed that he paint the house purple as a condition for him to move in and he painted the house purple, you could argue that's why he painted your house purple.3) Document actions that you have taken to comply with both the written contract and whatever you came up with in item #2 above.

Unless there is something illegal about them requesting this, you would have to comply so long as doing so does not breach another fiduciary duty to another client (confidentiality, for example).