I live rent free in my parents second house. The house is paid off. I run a small business from the home am I able to claim home office deduction if I'm not on title?

Trying to see if I'll qualify for home office mileage deduction. The house is paid for and I live in it rent free but I am not the owner my parents own the home and my name is not inthe deed. But I run a small pet sitting business out of two rooms.