Vastu Shanti also known as Griha Shanti puja. It is a hawan, performed to prevent harmful influences of the planets, remove negative energy and create a peaceful environment in the new premises. Owners might also want to perform Ganpati Puja, or Satyanarayan Puja. These can be conducted after Vastu Shanti Hawan.
Griha Shanti puja is undertaken with the goal of reducing the negative effects of the planets that are malefic. It improves the positive energies of a person and the family performing this puja.