What is vastu and when it gives benefits highly

It is a set of Principle guidance for Home building that can enhance positive energy into each space of the Home. It has clear scientific evidence and proves its principle.  Vastu principles have been set with the basic requirement of having the house sets in the ground and above the roof is the sky.

Having any Residence below your floor and above roof and NO air circulation around the residence cannot able to provide its energy into the residence.