Translation guide
In Japanese, 'one house' is typically expressed using the counter 軒 (けん) for buildings, attached to the number one: 一軒 (いっけん). The basic structure is [number + counter].
one house (counting)
The learner wants to say 'one house' when counting buildings, referring to a single residential structure.
The standard way to say 'one house' using the counter 軒 (けん) for houses and buildings. 一 (いち) becomes いっ before けん due to sound change.
There is one house on this street.
I bought a detached house.
Used in real estate or formal contexts to count households or dwelling units. 戸 (こ) is a counter for houses/households.
There is one vacant unit in this apartment building.
Means 'one family' or 'one household', not strictly a physical house. Can be used when emphasizing the family unit living in a house.
One family lives in this house.
The learner wants to specify a standalone house, not an apartment or unit in a building.
A common term for a detached house. Literally 'one-house-built', it implies a standalone residential building.
I want to live in a detached house.
Also means a detached house, often used in real estate or casual conversation. (one house) + (house).
Do not say 一つ家 (ひとついえ) or 一家 (いっか) to mean 'one house' as a building. 一つ家 is not a standard counter for houses, and 一家 means 'one family'.
one house (incorrect)
Use 軒 to count houses, shops, and other buildings. For apartments or rooms, use 部屋 (へや) or 室 (しつ).
Renting a detached house is expensive.