Piso vs. planta vs. nivel

The Spanish words 'piso', 'planta', and 'nivel' can all refer to different parts of a multi-story building, but they each have unique nuances and uses. Understanding the difference between these terms can help you navigate better in Spanish-speaking environments.

Piso

In Spain, 'piso' usually refers to an apartment or a flat. It is also used in the context of floors within a building, but mostly to denote the residential units.
Alquilo un piso en el centro de la ciudad.
(I rent an apartment in the city centre.)
El ascensor no llega a mi piso.
(The elevator does not reach my floor.)

Planta

Planta generally represents the level or story in a building. This includes underground levels like basements.
Vivo en la segunda planta del edificio.
(I live on the second floor of the building.)
El garaje está en la planta baja.
(The garage is on the ground floor.)

Nivel

'Nivel' is a more general term that refers to the level of anything, not just buildings. In the context of floors or storeys, it's used less frequently and might sound more formal or technical.
El ruido es tolerable en este nivel del edificio.
(The noise is tolerable at this level of the building.)
El agua ha subido de nivel rapidamente debido al aguacero.
(The water level rose quickly due to the downpour.)

Summary

'Piso', 'planta', and 'nivel' may look similar, but they portray different facets when referring to parts of a building. While 'piso' typically denotes an apartment within a building, 'planta' represents a floor or level inside a structure including underground spaces and 'nivel' is a broader term that can refer to levels in many contexts, not just in terms of floors or storeys.