Vaastu forms the fundamentals of every construction; one should follow Vaastu from the initial level, i.e. from selecting a plot to shift in the house. Everything ought to be done consistent with Vaastu principle since Vaastu isn't just a word, but it is a SCIENCE and a bridge between man and nature.
Vaastu Shastra is making a congenial settings or an area to live or work, in most scientific way, taking advantages of the benefits bestowed by the five elements called "Panchbhootas" of the nature thereby paving the means for increased health, wealth, prosperity and happiness in an enlightened environment.
These principles, called Vaastu Shastra, were evolved over thousands of years out of experience and foresight of ancient Sages of India and are very valuable for the well being of mankind. According to Shastras, if we worship, revere and respect the lords of these eight directions, they will shower on us their blessings and benefits. Our saints have searched Vaastu Shastra; we are only Researching it.