"Is there anyone in the house?" is incorrect how?
Sometimes duolingo doesn't get the meaning, and accepts only very narrow translations. it's just how duolingo is programmed. So, even if i'm not a high valyrian buff, i think you did nothing wrong. its just a glitch.
i was given the answer ¨is there someone in a home¨. you mean, like an ¨old people home¨????