Formal:
* Ma maison: This is the most common and neutral way to say "my house." It's appropriate for all situations.
Informal:
* Mon chez-moi: This is a more intimate way to say "my house," literally meaning "my home." It's used for a more personal and familiar tone.
* Chez moi: This is an even more informal way to say "my house," literally meaning "at my place." It's used among friends and family.
Other options:
* La maison où j'habite: This literally means "the house where I live," and is a bit more specific than "my house."
The best option for you will depend on the situation and your level of familiarity with the person you are speaking to.