大家都在自己的認知範圍內給出建議，確很少有人搜索法律是怎樣規定的地下室出租，我給出鏈接，大家自行閱讀

https://ipropertymanagement.com/guides/legally-rent-out-basement#:~:text=You%20can%20legally%20rent%20out,%2C%20HOA%20rules%2C%20and%20more.