If you have any concerns of a legal nature, you should consider sitting down with an attorney in your jurisdiction to examine the unique criminal and civil liabilities that such activities could potentially expose you to.

I'm in Washington state, so you can't use this as is, but here is an example from our crime free addendum, which came out of a partnership with our local police:Crime Free Rental Agreement AddendumFor the premises identified in the rental agreement, Landlord and Tenant agree as follows: Tenant, any members of the tenant's household or a guest or other persons affiliated with the tenant:1.Shall not engage in criminal activity, including drug-related criminal activity, on or near the said premises.

Lawsuit claimed that complex should have barred the man from the property, even though he had not been convicted, and that the complex was at fault because it didn't have security cameras and guards.So, landlords are now not supposed to automatically bar people with criminal records, but instead must evaluate on a case by case basis.  

Specifically the criminal activities section.

How will you do back rounds, criminal, credit checks, job references, recent rental history etc.?

They installed a fabulous fence too.My tenants loved the house, by the time of fence installation they had lived there for years, and they wanted to have privacy. 

there's plenty of information online that's available to the public. its all a matter of researching. for instance, not long ago I was looking up some relatives of mine. yes, I know they are my relatives but all I did was search online for their names and got death certificates going back a century plus. my point is that like marriage licenses, property owners and criminal background, death certificates are apart of public record also. 

s to seize any assets, which the police deem as criminal, at the discretion of the police to decide on this, as they are the sole arbiter to do so.

However, you also don't want to take the liability of housing people engaged in criminal activity. 

Lease expressly prohibits criminal activity at the property, but doesn't really cover this detail.