Formal:
* Petite maison: This is the most straightforward and common way to say "little house." It literally translates to "small house."
* Maisonnette: This word is a bit more formal and can also be used to refer to a small house or cottage.
Informal:
* Petite baraque: This is a more informal way to say "little house," and can sometimes have a slightly negative connotation, implying that the house is small and not very nice.
* Cabane: This word specifically refers to a small, wooden house or hut, often associated with the countryside or a vacation home.
The best way to choose the right word depends on the specific context and your intended meaning.