1A polite way to refer to someone else's home or family (honorific).
おうちにお邪魔してもよろしいでしょうか。
May I come to your home?/May I visit your house?
おうちの方によろしくお伝えください。
Please give my regards to your family.
おうちでお待ちしています。
I'll be waiting at your home.
2A child's or intimate speaker's word for their own home (casual, affectionate 'home').
ただいま！おうち帰ったよ。
I'm home! I came back home.
おうちでお昼ごはんを食べよう。
Let's have lunch at home.
遊びに行ったあとで、おうちに帰る時間だ。
After playing, it's time to go back home.