The word Vaastu refers to a shelter, either for the self or deity. Vaastu Shastra means the science (shastra) of construction of a Vaastu whereas Shilpa refers to the art of making it aesthetic and appealing to the senses of the inhabitants of house/ building. The science of house building is very ancient in India. The knowledge has come down from creator Brahma through an unbroken succession of sages.
According to the Vishwakarma, the celestial architect, Lord Brahma was the first recepient of this knowledge from Lord Shiva as a part of the Vedas, just like He received the knowledge of Jyotish. Vaastu Shastra as is practised presently is based on the 125 verses contained in Brihat Samhita of Varahamihira. This very point indicates the vital link between Jyotish and Vaastu. Unfortunately, what the standard Vaastu experts are applying today is the use of temple architecture in homes and offices. There is a need to use the Astakavarga and other charts of Vedic Astrology along with Vaastu principles for every individual home, provided this is to be designed for a particular person to occupy for a long period. If instead flats and apartments are being designed for the general public, then the standard principles can be used.