The article discusses how time on the market can indicate excess supply or demand in real estate markets. By analyzing the time it takes for properties to sell, researchers can determine if there is more supply or demand in a particular market segment. This information is especially useful in regulated markets where prices are controlled. The study found that time on the market can be a valuable indicator of market conditions and can help identify the level of demand for specific types of properties. This approach offers a new way to understand real estate market dynamics beyond traditional measures like vacancy rates.