noun which may take the genitive case particle 'no'
house-to-house; door-to-door; each house
Used as a no-adjective to describe activities done at every house, such as visits, deliveries, or surveys.
The police conducted house-to-house visits.
Door-to-door delivery is costly.
door-to-door visit; door-to-door canvassing
Compound of 戸 (door/house) and 別 (separate/per), literally 'per house'.