you have to brainwash them. i know a guy who is has been doctor confirmed crazy and medicated at the age of 16 with lots of pills. His parents were also on meds. He convinced his dad to help him built a shed in the backyard to grow hydroponic veggies. He succeeded and got away with many other things that are fucking crazy. He also made his parents buy him 3grand worth glass pipes and sold them on the net when he was 17. If you wanna grow in the house I would try to brainwash your parents. i would think the majority of people wouldnt let anyone grow in their house.