Creating a sacred space is part of Feng Shui which is a technique that originated in China many years ago. I would define space clearing as dissolving the old energy of a home and bringing fresh new energy, which can support your daily life.
It is recommended to conduct space clearing before you move into a new home as everything that has happened there will stay as an imprint and can have an effect on the new occupants. For instance, if the previous owners argued or had financial problems the next people moving in may experience similar difficulties.
You will see a noticeable impact after going through this process within short period of de-cluttering your home. It will multiply the effect as all the old physical objects have been removed and with them, the energy that was attached.This session is great to do within a week or so after you have cleared your home from all of the old as this is like the last touch up in the process.
Once you have done this you will be amazed at how nice and welcoming your space feels, especially when you come home after a long day.I recommend to clear your home regularly at least 4 times a year (every season) to enjoy the most benefits. Please be mindful when you start to feel that the energy in your home is getting heavy or feels stagnant as this could be a sign that your home needs more of your attention and harmonising.