dwelling unit; apartment unit
Refers to an individual residential unit within a larger building, such as an apartment or condominium. Common in real estate and architectural contexts.
This apartment building has 50 dwelling units.
各住戸に駐車場が一つ割り当てられている。
One parking space is assigned to each unit.
corner room; corner apartment
Compound of 住 (dwelling) and 戸 (door/household), literally 'dwelling household'. The exact historical derivation is uncertain, but the term is used in modern Japanese for individual apartment units.