Staircase must be built on Southern or Western part of the house. One can also build a staircase in South-East facing East, South West facing West, North West facing North and South West facing South.
please ensure Pooja room, bathroom or kitchen should not be under the staircase.
Vastu principles if followed properly, brings you wealth, health and peace of mind. You can visit www.vastudekho.com for more personalized query and solutions.