Even if you already know the answer, it is always worth reviewing key considerations regarding a building's square meters. Not only are they fundamental to determining construction costs and materials, but they also lay the groundwork for tax assessments and regulatory compliance.
It is important to distinguish between gross built area, usable area, and computable area. The first is the total floor area, measured from the exterior face of the outer walls. The second corresponds to practically all habitable space within the building (excluding walls, structural elements, and building systems). The third is a technical figure used in official documentation where, depending on local regulations, a certain percentage is deducted for specific areas such as uncovered or semi-covered spaces, stairwells, and balconies, among others.
