Vasthu is social psychology by self.It is neither science not pseudoism like numerology.
Vastu is neither the best nor the better but better over the best. House plan should 1)leave 1/9th lenghth in total length and 1/9th breadth in total breadth as vacant;2)east side should have more width than west side and north side should have more width than south side. Otherwise psychological and social balance will get problem.