Do we need a Vāstu pūjā before moving into a house?

it is traditional and recommended, especially for a newly built home, but a simple prayer is also accepted.

Tradition describes Vāstu Puruṣa, the deity of the building site, lying across every plot with different devatās seated on different parts of his body. Building a house disturbs the land, so a Vāstu śānti is done to honour him and those devatās, to ask forgiveness for any harm done during construction, and to invite peace into the home.

For a new house, many families combine Vāstu pūjā with gṛha-praveśa: Gaṇeśa pūjā, kalaśa sthāpana, worship of Vāstu Puruṣa and the navagrahas, and a havan with Vāstu mantras. For a rented flat or a resale home, a simpler Gaṇeśa pūjā, a lamp and a small havan or Satyanārāyaṇa kathā are common and entirely adequate.

If the home has some Vāstu “defect” you cannot change, do not worry. Keep the house clean, light a lamp daily and keep a peaceful atmosphere; tradition values these more than perfect geometry.

Source: Matsya Purāṇa (Vāstu chapters); Bṛhat Saṃhitā

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