In Real Estate, What is an Option to Buy?

From the perspective of microeconomics, real estate demand refers to the amount of real estate consumers (including production and operating consumption entities and individual consumers) who are willing and able to purchase real estate commodities at a certain price level in a specific period. The demand mentioned here is different from the demand in the usual sense, but refers to the demand with ability to pay, that is, the effective demand. From a macroeconomic point of view, real estate demand refers to the total demand of society for the real estate market, and the total demand for real estate in the whole society or a certain area in a certain period of time, including total physical value and total value.