Vastu Shanti worship is originally a worship of lord and Deity of directions, five element of nature as well as natural forces and other related stuffs We do Vaastu Shanti ( worship of deity and lord of nature and their elements and natural forces as well as lord and deity of directions and environment ) to remove any type of Vaastu Dosha whether it's a land and building by nature of environment by Vaastu Shastra worship with avoiding major changes and demolition in the structure of building.
We must do Vaastu Shastra in the following circumstances to avoid adverse effect (circumstances) by nature and environment