house party

A house party is a social gathering held at someone's home, typically involving music, dancing, and drinking.

Unlike formal dinner parties, house parties tend to be larger, louder, and more casual affairs where guests mingle freely throughout the space.

We're throwing a house party this Saturday—bring whoever you want.

The term can also refer to a group of guests staying at a country home or estate for an extended visit, a usage more common in British English.