Here is a website that gives you the step by step instruction if needed https://guides.sll.texas.gov/landlord-tenant-law/eviction-pr... 

Can anyone cite relevant case law which clarifies this?

And they know they are breaking the law!

A breach of this mold prevention agreement shall be a material violation of the Lease Agreement, allowing Manager to recover possession of the Premises, following Demand for Possession or Compliance in accordance with state law, and all other rights and remedies contained in the Lease.

Written by attorney investors, it's full of practical advice about the management of investment property, has sample forms that can be edited, and - most importantly - tells you what your primary state laws are and where you can read them.

What I didn’t know at the time is that we were in violation of occupancy laws (ignorance was bliss on that one, thankfully we never got reported for having more than the allowable number of people living in the house).

@Jack Smith, can you be more specific on the lead laws and income source protection issues?

The law now also requires landlords with more than 3 properties to give at least a 60 day notice of termination. 

@John DeanIf it’s going to be owner occupied then you should use a loan servicer as its required by law in most states and for every incorrect statement you send every month you are committing CFPB violations and if the borrower defaults you are technically not allowed to collect interest - in some states if they have a good attorney and default they could wipe you out in legal fees…My bigger question is why would you seller finance?

The legal exposure is far too much with everyone suing each other and now the laws in Denver are more tenant friendly.