Therefore, aware of the need of a house and in order to avoid troubles, man wants to construct a house on such a ground where he can feel all sorts or happiness and can lead a peaceful life free of troubles and enemies, thereby deriving spiritual peace. With this aim in his mind, he sets out in search of the learned wise persons who can guide him in selecting a site (plot) of his choice, and also in construction of the house. He wants to know the proper auspicious time, and principles (laws) of constructing the house. Also he has in mind the colony or city, neighborhood, sources of water, natural environment, means of transport, etc. while selecting a plot for building a house, at the same time he thinks of his own interests and profits. The external features of the plot can be known with the help of persons living around or nearby the flat. But the quality and nature of the land can be judged only by Shastra. The selection of a site and the plan of the building should be constructed only after consultation and seeking advice of expert Vastu specialists.
If there is house in which lives an unfaithful wife, a foolish friend, an outspoken servant and a snake, the owner of such a house may die at any moment. If such things are associated with the house constructed by someone, the life of the inmates become troublesome and unhappy, and there is always a fear of death. Therefore, everyone is curious to know as to what is Vastu Shastra, and what principles and methods regarding the construction of buildings have been given by the ancient saints and seers on the basis of their experience and commands in the divine scriptures. With the help of Vastu Shastra and Shilpashastra, knowledge about the better and auspicious way of construction of a house, the positions and direction of gates, doors and rooms, etc. in it, is gained so that a house may be built which will provide all round prosperity and happiness to the inmates. Thus, Vastu Shastra provides some principles and rules on the guidelines of which suitable and comfortable buildings for residence, temples, etc. are built and towns, colonies are planned.