Terminology
The Sanskrit word vastu means a dwelling or house with a corresponding plot of land. The vrddhi, vāstu, takes the meaning of "the site or foundation of a house, site, ground, building or dwelling-place, habitation, homestead, house". The underlying root is vas "to dwell, live, stay, abide". The term shastra may loosely be translated as "science, doctrine, teaching". Besides, some say that Vastu was one of the greatest architect and town planning expert ever produced by India who lived 2000 years ago. The king would send him for planning and establishing a town. This concept of Vastu is not highlighted anywhere.
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