The perfect vasthu is based on the following vasthu rules or norms;
Magnetic pole alignment
Main door entry
Bore well location
Septic tank location
Staircase or lift location
Inside rooms arrangement pertaining to the directions
Kitchen and you look et location .
Pooja room, children's room
Living hall and dining
All corners of house should be in 90 degree
No cut it bend in the corner.
Overhead tank location.
All to be placed in proper manner to achieve more positiveness.