Vastu Shastra prescribes few rules for total number of doors and windows, while constructing a new house. Even for existing house, which is bought or rented, these rules should be applied and necessary modifications should be done. Even though doors and windows are for insulation purpose, maximum of them should be in north-east corner and those walls. Doors and windows are not merely passages for insulation or for people to enter but are also gateways for positive and negative energies to come into the house. If a window is designed incorrectly in the wrong direction, it can pave way for the negative energies to come in and spell disaster for the inhabitants. Conversely, if the doors and windows are constructed in the right direction, they can bring in a lot of prosperity and luck.
# Maximum number of doors and windows should open in the North and East as compared to the South and West.
# The doors and windows should be in even numbers like 2, 4, 6, 8 etc. but not 10 and multiple of 8.(count doors and windows separately) 12,14,18,20 are okay.
# When fixing the windows and doors, it is important to keep cross-ventilation in mind. Also, it’s essential to fix windows and doors opposite to one another to allow more light and air to enter.
# The main door of house should be taller than other doors. It should be of two shutters.
# Doors must never be placed at the center of a wall.
# South facing houses must have north facing entrances so that they fall at the eastern half.
# North facing houses must have north facing entrances so that they fall at the eastern half of the side.
# If you have a south or south-west facing plot, never have a door as entrance from that side. Always use east or north-east corner door to walk into the house.
# West facing houses must have their entrance towards West, to make sure the main door falls at the Northern half of the side.
# The entrance for east facing houses must be fixed towards East, to make sure the main door falls towards the Northern half of the side.