Simple,,if they aren't on lease they are stealing from you.. they have no right to live there and you need to enforce the lease either they sign on or the move on out.Section 8 has rules. no one but sect 8 approved that's on the lease is to live in the household. 

You have to check your city legislation for what is the amount of tenants you can have in a 2 bedroom apartment. 

There was some legislation enacted to curtail its manufacture and use, long before 1978.

The code enforcement officer said they don’t care what violations you have inside as long as it’s uninhabited.

It also helps to get involved with local landlord groups (GBAOMA, MAOMA, CMAOA, etc) who help stay on top of legislative issues and lobby to keep them aligned in our favor whenever possible.

Here's another link mentioned legislation introduced in Feb of this year on the topic.http://nlihc.org/press/releases/7507Doesn't seem likely that will make much headway in DC.Probably good to consult with a landlord/tenant attorney before taking any action.

And I think (I haven't kept up with the legislation) you can't ask an applicant about previous criminal court matters, but there is nothing saying you can't go to dccourts.gov and look them up or the Maryland Court website and look it up yourself.

"My" tenants are not having a hard time at all.We are going through some issues here in NJ with legislation, the majority of it brought about by absentee slumloards.

I put the name and phone number of the towing company plus local enforcement, police department in my case.

Amir Magar I was (am) a law enforcement officer.