This architectural drawing is Built up area calculation of first and third floor plan in detail AutoCAD drawing, CAD file, dwg file. The gross area of the property is known as the built-up area or the plinth area. It is the overall size of the house, taking into account the utility space, balcony, terrace, ducts, and wall thickness. The built-up area of the house is, on average, 10-15% more than the carpet area. For more details and information download the drawing file.