noun
split-level floor plan
A floor plan where levels are staggered by half a story, creating split-level spaces within a building. Common in residential and architectural contexts.
wasei-eigo (Japanese-coined English), from skip floor
このマンションはスキップフロアを採用していて、リビングと寝室に段差がある。
This apartment uses a split-level floor plan, so there is a step between the living room and the bedroom.
A split-level house allows you to use space three-dimensionally.