1. A space or portion of a property, building, or land that cannot be practically used for its intended purpose due to physical constraints, design flaws, or regulatory restrictions
The sloped ceiling in the attic created an unusable area that couldn't accommodate furniture.
O teto inclinado no sótão criou uma área inutilizável que não podia acomodar móveis.
2. In real estate, space that is not counted toward the usable square footage of a property
The building's unusable area includes common hallways and mechanical rooms.
A área inutilizável do edifício inclui corredores comuns e salas de equipamentos.