A house or building; a dwelling or structure—used in a somewhat formal or legal/architectural context.
地震で多くの家屋が損壊したと報告された。
It was reported that many houses/buildings were damaged in the earthquake.
補助金は老朽化した家屋の改修に使われる予定だ。
The subsidy is planned to be used for renovating dilapidated houses.
家屋の所有者は固定資産税を支払う義務がある。
Owners of houses are obliged to pay property tax.