Based on the information provided, it typically takes 2-4 weeks for a real estate agent to sell a house when they set the asking price. However, the exact timeline can vary greatly depending on local market conditions, demand, and seasonality. The average time it takes to sell a house in the US is 55-70 days, but this can range from a few weeks to several months. Factors such as the condition and price of the home, as well as the skill of the real estate agent, can all impact how long it takes to find a buyer and complete the sale.