Single rental unit managed by private owner: occupancy limit?

[John Melenski]

I understand as a landlord owning (1) 3bd/1bath/1500 sq ft unit and not using a property management company, I am exempt from many requirements, such as allowing service animals in some cases.

Does this also apply to the (2) per bedroom occupancy standards?

Does the law pertain only to nuclear families or does it also include extended families (grandparents/parents/grandchildren)?

I have a how thats septic, and I don't want to deal with the costs to dump it, and I just assume not have 6-7 people crammed in there.