However, structuring this in a way that complies with tax law would likely require expert legal and tax guidance, as it involves partnership agreements and IRS regulations.

Be safe, know the law, stay legal.

The guidelines for ADUs will vary from lender to lender, but there are options for those, yes.  

In the process of coming up with a legal agreement between us, we cannot figure out how to address when we have differences on how to solve disagreements on repairs.

This reads like fraud...Mortgage fraud is investigated by the FBI and punishable by up to 30 years in prison and/or a fine of $1,000,000 --- (link)Bryan, there are perfectly legal solutions to your problem, call anytime.

It is not legal advice and is not guaranteed to be accurate.

I will be moving into the 5 bed 3 bath because the tenant has been there half as long as the upstairs tenant (therefore that is the unit I am legally directed to move into vs the more tenured upstairs tenant).I do not need the space of a 5 bed 3 bath apartment so am planning on renovating the entire space and turning it into x2 2 bed 2 bath apartments while I am living there.

I take the issue of sponsors acting as fiduciary to their investors very seriously, regardless if they are legally required to or not, and plan to create a platform that calls out those who don't, and celebrates those who do.

This is not legal advice, just friendly information.Obviously, I'm biased, but an attorney should put that together.

.--- The tenants just won't cooperate:Yes, you can try to get in with a Legal Entry, but then they can easily sabotage the showing by:----- Being rude----- Keeping the house dirty (or worse)----- They can keep an aggressive dog in the house when they are not there----- They can deliberately leave an unattended minor alone in the houseYour current PMC should be taking the time to address and explain all this to you!