This will verify terms of their current verbal lease; monthly rent, no defaults, no special circumstances or promises by the landlord.

Percentages are universal and that's what we deal with here.Case precedence has shown an up to 20% discount to fair market might be appropriate depending on exact facts and circumstances. 

. #4 is nice and I would lean toward that in most circumstances but I think it makes the room feel a bit too bland. 

Under such circumstances we find section 280A inapplicable." 

Good news is SD is strong for those exact location circumstances. 

e.g. income tax, estate tax, gift tax, etc.Your tax professional is in the best possible position to advise you as they'll know all of the facts and circumstances. 

Thank you Mr.Fomichenko, but what if I'm in the circumstance where my parents might not have the best credit?

They have an InvestHer meetup for women at the Panera Bread I think its on 17th street in Fort Lauderdale, I was always jelous that meetup seemed to open before everyone else after covid.

It's 3 women in their late 20's who pay rent on time and who have been very friendly.  

You do not owe them a fee and under "normal" circumstances as a Realtor, I would have phoned you in advance asking if you were willing to pay a "finder's fee" for my prospective client.