おoたく宅taku
1.
A term used to refer to someone's residence, often implying a sense of respect or formality toward the owner of the house.
2.
A way to address or refer to someone's household or family, highlighting the personal space and life within that environment.
3.
An expression that can denote familiarity with someone's living arrangements, often used in a polite context in conversation.
Example:
お宅の暖房はどのようにしていますか。