NBCC, a state-owned construction company, follows a cost plus model where all costs are billed to the client, making it financially sound even in the face of inflation. The company plans to utilize the proceeds from the sale of commercial space land at Rs 5,700 crore for the construction of the World Trade Centre and seven GPRA projects. NBCC has already sold commercial property worth Rs 7,200 crore in the project and expects to sell at least Rs 2,000 crore worth of property in an upcoming auction.