It is nice when settling into a new home to honor the spirits of the place, including the land around it. This can be done at any time: right before you move in when the space empty, right when you get there or later, after you've set up your things.
You can get guidance in the creation of this ceremony or have it facilitated for you. House clearings may be necessary to resolve issues with the energy or spirits of the place. Sometimes there is a soul that needs help crossing over. Sometimes there is a need or request from the land that needs attention.
This can be a private ritual or the kick-off to your house warming party. Giving your friends and family the option to participate can be a gift to them, too.