You, as a landlord arent required to verify citizenship, however you also won't likely have any recourse if they trash your house and run.

Depending on your citizenship too, if you are US and can get a mortgage that is great, but if you aren't a citizen, there are private lenders who will loan to internationals on those turnkey properties.

My objective it to buy to let (rent).I have citizenship and family there, plus I love the place.

I enjoyed living here so much that I have dual citizenship and besidesmy girls have grown up as Aussiesand my wife is an Aussie.You're right about the price of houses here.

IE proof of citizenship or legal residency, how many months of pay stubs,number of references...What do you charge for an application fee for things like credit checks and background checks?

No home and they are living in your apartment, that means you are abuse the rules of bringing someone in your apartment to give them shelter.3) Before any guests can be put on the lease, background will be check make sure this person is U.S citizenship or have legal resident here in USA.

He has dual citizenship.

We have dual citizenship in Peru and I can tell you we would get nothing near 3 percent and cash is still king.Most is cash and property taxes are cheaper though in Peru at least there is always another document to get stamped or whatever.

It sounds like overall a solid team you can trust is key along with an attorney who can help navigate the waters for those who don't have Mexican citizenship. 

Have you asked to see a passport, work visa, citizenship papers, social security/tin number ,etc or are you assuming they are illegal because of perceived nationality ,accent, name, or some other prejudices.