noun
former residence; old house
Refers to a house where someone used to live; often used when talking about moving, visiting a childhood home, or a property one no longer occupies.
彼は旧宅を売却して、新しい家に引っ越した。
He sold his former residence and moved to a new house.
夏休みに祖母の旧宅を訪ねた。
During summer vacation, I visited my grandmother's old house.