Major beliefs of Vastu Shastra are follows
Existence of roads on the northern or eastern side of the house improves the health and progress of the members of the house. If a house has road on the 3 sides, its inhabitants suffer tension and tension related problems.
When the digging is happening to lay the foundation, make sure that you start from the east, go to the north, then to the west and lastly, southwest.
The plot at the end of a road is also not good for its inhabitants.
It is good to have main door on east, northern and north eastern corner of the house. A house having main door at the southwest end provides less peace and perpetually tense atmosphere.
A house having massive main door gives a lot of unsavory events and members residing suffer health problems.
There should be no doors in the southwest corners or the southwest portion of the house. It is best if the doors face north or east. Doors should also open inside and not outside. When the door opens inside, it stands for inviting popular powers and positive energy. However, the door opening outside would be bad for the positive energy- it would actually drive the good energy away.
Wall of house should have soothing and soft colors on walls as this gives a tension free atmosphere. Deep yellow, red or orange colored walls give irritation to the occupants.
All water related appliances or resources of the house should be placed on north east area. This provides prosperity.
A well or a tube well should never be provide on the southeast end of the house. A well or tube well at center of the house brings good luck to its head.
Presence of plants of Tulsi, Banana, Champa, Ashoka, Aawla outside the house keeps inhabitants healthy, happy and peaceful.