Korrus

Korrus is the Estonian term for a floor or storey in a building. It denotes a distinct horizontal level that separates spaces above and below, and on which rooms, corridors, and services are arranged. In everyday use korrused are numbered or named, for example maa korrus (ground floor) and esimene korrus (first floor). In addresses and plans, korrus helps locate units within a building.

In architecture and real estate, a korrus includes a plan with rooms, access via stairs or elevators, and connections to building utilities. The height and layout of a korrus vary with building type and local regulations; residential, office, and commercial floors may differ in design. In many contexts, the korrus is treated as an independent level, and a staircase or elevator connects it to other korrused.

The word korrus is native Estonian and part of standard building vocabulary. While its exact historical origins are not widely detailed in common references, it has long been used to reference levels within structures in Estonian.

Related terms include floor, storey, and level. In the Baltic region, similar architectural concepts are expressed by Latvian stāvs and Lithuanian aukštas, reflecting a common understanding of building levels across languages.