1. The total surface area of a floor in a building, typically measured in square meters or square feet
The office has a floor area of 500 square meters.
O escritório tem uma área de piso de 500 metros quadrados.
2. The usable or rentable space on a particular level of a building
The developer calculated the floor area for the new commercial building.
O desenvolvedor calculou a área de piso para o novo edifício comercial.