also: いえぬし · いえあるじ
noun
Only with reading やぬし / いえぬし
Refers to the owner of a rented property, typically an apartment or house, from the tenant's perspective.
家主に家賃を払う。
I pay the rent to the landlord.
隣の部屋の家主はとても親
The landlord of the next room is very kind.
noun
house owner; homeowner; head of household
Refers to the person who owns the house they live in, or the head of a household. Not necessarily a landlord.
彼はその家の家主だ。
He is the owner of that house.
家主として、家族を守る責任がある。
As the head of the household, he has a responsibility to protect his family.