If the backyard soil is high, it can prevent rain and snow from flowing from the front yard to the backyard, which will affect the drainage of the backyard and the stability of the building. At the same time, if the foundation in the backyard is higher than that in the front yard, the building can be better protected from natural disasters such as tides and floods. However, if the soil is too high, it may affect the health and wealth of people living there.
If the soil in the backyard is low, it may cause rain and snow to flow from the front yard to the backyard, which will affect the drainage of the backyard and the stability of the building. But at the same time, if the foundation in the backyard is lower than that in the front yard, the building can better resist natural disasters such as tides and floods.
To sum up, whether the backyard soil is high or low needs to be selected according to the specific situation. While considering the height of soil layer, the stability and safety of foundation should be ensured. You can consult a professional when choosing.