https://www.ultratechcement.com/for-homebuilders/home-building-explained-single/phase-2-articles/difference-between-carpet-area-and-built-up-area - In real estate and construction, the terms carpet area and built-up area are commonly used to describe the space within a building. Both terms refer to the area measurements, but they have different definitions and implications, particularly when it comes to property valuation, pricing, and legal considerations.