In matter of days the girls parents will blackmail her into leaving you. You only have a few days to convince the girl to leave her house. If you can’t or if she cannot, forget about the whole thing. Her parents are not approving you because of a certain reason, maybe they want someone wealthier or in the same caste. The house thing is BS.
Had a relationship like this once. We decided to wait until the parents agreed but it was the wrong decision as the parents threaten to eat poison and she cut it all off. Got married in the next 4 months.
I didn’t regret to live the decision as I found someone else and I’m super happy with her.
Also, a personal take- it’s always better with parents blessings.
Takeaway
1- take her out of her parents house asap and live with the consequences.
2- if she doesn’t, you’ll find someone better.