In fact, the designation of a private house as an important cultural property together with the land implies the intent to preserve the entire residence for posterity, thus encompassing not only the private house main building but also the attached construction such as the gate, fence, warehouse, well, shrine, structures such as stone walls, the waterway, garden, and moat, housing lot, forest, etc.
民家の重要文化財指定に際して「土地」を併せて指定するということには民家の母屋のみならず、門、塀、蔵、井戸、祠等の付属建物、石垣、水路、庭園、堀等の工作物、さらには宅地、山林などを併せて指定することによって、屋敷構え全体の保存を図ろうとする意図がある。