二に階かい建だてにかいだてCommon word›JLPTN4›じ字FuriganaMeanings1nountwo-story buildingRefers to a building with two floors above ground. Often used in compound nouns like 二階建ての家 (two-story house) or 二階建てバス (double-decker bus).See also: 階建てこのあたりには二に階かい建だての家いえが多おおい。