noun
house and land; estate; homestead
Refers to a residential property including both the building and the land it occupies. The term 'messuage' is a historical legal term in English; the Japanese word is neutral and not limited to legal contexts.
彼は先祖代々の家屋敷を守っている。
He preserves the family estate passed down for generations.
その家屋敷は広大な庭を含んでいる。
The property includes a spacious garden.
土地 means 'land' or 'plot of land' and does not include the building; 家屋敷 includes both the house and the land.
Compound of 家 (いえ, 'house') and 屋敷 (やしき, 'residence, mansion'). The combination emphasizes the whole property including the dwelling and its land.