Growing inside someone else's home

I have a friend who comes from a wealthy family, and the family owns land way out in a rural area. According to my friend, the family doesn't use the property anymore and my friend said that I could use it if I wanted to. I'm thinking about growing indoors a this property but I really don't want to start growing only to have some family member show up and walk in on a bunch of weed. And if they do walk in on the place while plants are growing, I want to know when it happens so I know not to show up again. Do you think it is at all wise to try this out? It should be pretty safe unless some family member shows up out of the blue, but I have no way of knowing the likelihood of this happening. Would it be possible to grow there and set up cameras so I could know if anyone else was there but me? Or should I just scratch the idea completely?

Would I be living there or would it remain empty?

What are the chances of securing permission from the actual owners?

Rural neighbors notice strangers and exchange phone numbers.
For just this sort of thing.
And.
Someone pays the utility bills.
Any change in water, electricity, or propane will trigger an investigation.

If caught, expect to be way, way under the bus.
They will file a civil suit on you to cover their ass and prevent property seizure.
And probably lay trespass charges as well just because it supports the suit.

But the main reason I would advise against it is ethical.
Ethically, it is wrong.
Do unto others . . .

Now, if the owners agree to your plan, and share in the harvest, that's a different animal entirely.
Go forth, and grow heartily. :D

Aloha,
Weezard