Things You Need For Griha Pravesh:
1) Puja Idol of Lord Ganesha & Lakshmi.
2) Kalash or a pot filled with water.
3) Toran or mango leaves in a string to be hung on the door
4) Items for havan (havan vessel, firewood, ghee, havan powder, matches etc.)
5) Milk Vessel
In order to get the blessings of Lord Ganesha, Griha Pravesh Puja is held. The dates of Griha Pravesh Puja is vary depending upon what kind of house you are look to enter.
Generally Griha Pravesh Pooja categorized into Three sections namely:
1.Apoorva- It is meant for a family entering a newly constructed house /flat /home /apartment /villa built from scratch. The day for Apporva Griha Pravesh are selected depending on the time and date when the sun is in the Uttaranayan position.
2.Sapoorva- it is performed by a family while entering a house/ flat / home / apartment / villa that was previously owned by someone else which is too old. Usually this puja is done following a long period of travel or absence.
3.Dwandwah- this is meant for people entering a house after a major reconstruction or renovation following some natural atmosphere, weather condition,calamity or damage. Dwandwah Griha Pravesh has important to be held at a time when the Jupiter or Saturn is setting as per the lunar calendar.
As per Lunar calendar unit tithes like 4, 9 and 14 are not considered auspicious. A no moon night or Amavas is also considered to be unholy by most Hindus and all major pujas done by the domestic household do not take place on a no-moon night. All days of the week, except Tuesday are considered auspicious for a Griha Pravesh Puja.