Negative energy sometimes stays in a house or building for a long time. If you are a new occupant, you simply inherit these negative energies. They will cause you all kinds of problems like appliance failures, lack of sleep, sicknesses, fatigue, bad dreams, and instability.
Space clearing is one way of cleansing and purifying a building. It enhances the nature and quality of energy in a space or house. If you are moving your company to a new building, it is recommended. If you have also just rented or bought a house, space clearing should be done before occupation.