There is nothing wrong with living in a house one owns.
Landlording is a systemic practice of using government contracts to take money from people without doing labor. Which we as communists seek to abolish.
Is there a party to support? Then support your local party, or build something useful for the revolution. That is what matters more than your parents means of income. You can't have agency over other people. You can try to convince them but that's about it.
Even then, I would not chastise you even if you started landlording or being a petite bourgeoisie business owner. Sure other people might find it harder to take you seriously, but we are in a war of position to convince people. We are not in a war of maneuver where your life is on the line at the moment so don't worry.
Separate these 2 things: 1 the things you have now because of your past and things given to you, 2 the things you can do later. What you have gives you power to act in some ways that others can't. If you have privlidge, don't dwell on guilt for what you don't have control over. Think of what was given to you as tools to help you do more for the communist movement. Use that steady security brought to you to help the working class out in what ways you are able.
I admit that I don't know much about North Korea, but they seem to manage to have elections despite being at war with the largest superpower for almost a century. Maybe they should learn from North Korea.