nettopintaala

Nettopinta-ala, often abbreviated as NTA, is a Finnish term used in real estate to describe the usable interior floor space of a building unit, such as an apartment or an office. It is expressed in square meters and reflects the area that occupants can actually use for living or working, as opposed to the overall footprint of the building.

Typically, nettopinta-ala is measured as the sum of the floor areas of all spaces inside the unit that are intended for occupancy, with the measurement taken to the inner boundaries of the enclosing walls. The exact inclusions and exclusions can vary by developer or contract, for example in how balconies, terraces, storage spaces, or alcoves are treated. Because of these variations, the stated nettopinta-ala should be checked against the measurement methodology provided in the sale or lease documents.

Nettopinta-ala contrasts with bruttoala (gross floor area), which generally includes structural elements and sometimes shared or non-occupiable spaces. In commercial contexts, a related term is net lettable area (NLA), which measures the portion of space that can be rented to tenants, excluding common areas. In residential real estate, NTA is commonly used in listings and planning to help buyers compare sizes, though the precise calculation method can differ between developers and municipalities.

In practice, buyers and renters are advised to review the measurement basis stated in documents accompanying a property listing to understand what is included in the nettopinta-ala and to compare sizes accurately.