Before entering a new house, a pooja ceremony known as Griha Pravesh ceremony should be performed.
A good time to enter a new house is in the period of Uttarayan, from June 21 through December 20, in the months of Vaishaka, Shravan, and Margashirsh, in the constellation of Uttara, Magha, Ashwini, Swati, Pushya, and Revati, on an auspicious day. It is good to confirm this time with a qualified astrologer/priest.
Ganesh-puja, Navagraha-puja (worship of the nine planets), and worship of the Vastu purusha should be performed. The residents of the building should then circumambulate the building. Then puja should be done to the threshold.