I recommend you read your state's statutes on this to determine specifically what is required. 

The local statute of limitations may apply.

The local statute of limitations may apply.

Accusations have to be proven to win.Most items have a 3 year statute of limitations for a lawsuit.

If it is a loan modification to extend the mortgage, I'm guessing you might be in default or close to it.One answer for how long you have to do a loan modification is that you have until the hard money lender forecloses and the house is sold or files a lawsuit and gets a judgment.If you are in default, unless the lender drops the ball, probably within 6 years (or whatever the statute of limitations is for a breach of contract claim is in the state) of your last payment, and they'll file a lawsuit or initiate a foreclosure action.Note: This information is for educational and informational purposes only and does not constitute legal, tax, financial, or investment advice.

There is no expectation of privacy in common areas or outside on the premises.However, I am reading between the lines here and it seems like the tenant is the real issue here.Here's what I would do if I were you (in order):(1) Issue a notice of termination to this tenant, and make sure you comply with your state statute for doing so. 

I would suggest googling landlord  tenant laws, and New Jersey, which should take you to the statutes surrounding your state.

2- I understand the statute of limitations.

Quote from @Jonathan Blanco: Florida Statutes 83.808 (3) talks about charging reasonable late fees when rent payments are late.

Further, rules regarding any of these activities will be at a state level, so you would have to become aware of the specific statutes, if any in Texas and any regulations put forth by the Texas Real Estate Commission.