Formal:
* Ein cartref: This is the most common and literal translation, meaning "our dwelling place."
Informal:
* Ein tŷ: This is a more casual way to say "our house," and is more appropriate for talking about your own home.
Other options:
* Y lle y mae ein cartref: This translates to "the place where our home is."
* Ein man: This is a more colloquial way to say "our place."
Ultimately, the best way to say "our home" in Welsh depends on the specific context and your desired level of formality.