In fact, the orientation of modern houses is particular. Generally, the orientation is judged according to the windows of the living room and the master bedroom. For example, the window of the living room faces west and the window of the master bedroom faces south, so it is southwest, and so are other directions.
In fact, the way to judge the direction of the house is very simple: people stand in the house and look in the direction of the door of the house. If the front direction is north, that is, sitting in the direction of south facing north and west, the seat of the house is sitting east facing west. The doors of some houses are designed to enter through the floor-to-ceiling windows of the balcony, so this kind of door refers to the doors other than the floor-to-ceiling windows as the basis for judging the orientation, not the floor-to-ceiling windows.
Finally, you can also look at the orientation of the house like this: divide the current time by 2 and aim the quotient at the sun. The direction of 12 on the dial is north. For example, it's 8 o'clock in the morning, and if you divide by 2, the quotient is 4. Aim the 4 on the dial at the sun, and the direction of 12 is the north. If it is in the afternoon, it will be calculated by 24-hour timing.