If I buy a house in the United States, can I live there at any time?

Anyone can buy a house in the United States, including non-Americans. Buying a house does not depend on nationality or visa.

The visa granted by the United States determines when you can go to the United States and how long you can stay. It has nothing to do with whether you have a house or not. Buying a house in the United States does not mean that you will get a U.S. visa or green card or status. You can only go to the United States with the appropriate visa. How you live there is up to you.

If you buy a house first, it may be more difficult to obtain visas for studying abroad, traveling, visiting relatives, etc. Because there is a clear tendency to immigrate.