Quote from @Corby Goade:
Anyone over 18 should be screened. Every lease says something about guests staying longer than X days, but obviously that doesn't mean that you need to screen someone's mom visiting for two weeks, it's to keep other legit occupants from moving in.
If your applicant is really pushing back on that now, just imagine how much fun they'll be once they move in...
Agreed if it were someone who just didn't want to fill out an application because of the occupant info...We took over some slumlord managed apartments. The tenant actually replied after my response and said they really appreciated me for explaining the why and she was very happy to have a landlord that wants to put specific items like that on paper so she can look back on the lease and know what she can or can't do. The last lease she had was one page..
Her initial concern was giving out her children's information. I told her that it would be kept confidential and the only purpose was for property management.