The house is not a glitch, its a secret area that I'll be adding in a future update. If you really wanted to see it now, you could use Surf right where it stops you. There's not much inside yet however. I'm thinking of making it a spot to catch event legendaries (ex. Mew). And if you wanted to help me with mapping, then how would you do that? My idea is that you edit the ROM, then send it to me to review. If you have a better idea please let me know. I apologize for such a long message. :/