You just bought a 10-year-old house. The house is located in a expensive neighborhood. You do have to do some repairs. How does that transaction influence GDP? If the house is purchased with the assistance of a real estate agent, is this payment included in GDP? You then hired a local contractor to re-do the wiring. You paid the contractor $10,000. . The contractor had to buy new wire. How does the purchase of wire by the contractor influence GDP? What if you had done the wiring yourself? In this case, you bought $2,000 in wire to complete the task. How would this influence GDP? Why do the two methods of wiring the house have different implications for calculating GDP when the actual production (a house rewired) is the same?