What is Plinth Area? Calculation, Definition, and Formula

No. The plinth area refers to the covered area measured at the floor level of the building's outer edges. The built-up area includes the plinth area and additional spaces like balconies and terraces.

 To calculate the plinth area, measure the dimensions of the outer walls, include the thickness of internal and external walls, and account for covered spaces such as staircases and storage rooms. Add additional features like balconies and terraces to the plinth area calculation for the built-up area.

When calculating the plinth area, include internal and external wall thickness, floor space of all rooms, staircases and passages within all the rooms, areas occupied by elevators and internal partitions.

Yes, the area of internal shafts is generally included in the plinth area formula if the shafts are covered and enclosed within the building’s structure.