The puja room the building should be in the east, north or north - east corner. The puja room should never be in the bedroom. The idols should be kept in the north-east portion of the pujaroom. The faces of god should not be covered with anything including garlands and flowers. If a lamp is placed in the pujaroom, it should always be in front of the god. All the material related to pujaroom should be kept in the southeast of the room. Pooja room should always be on the ground floor and never in the basement.
One should never use poojaroom for any other purpose like store. All the almirahs and cabinets in the room should never be more in height in comparison to the placement of idols. Ensure that the toilet is not adjoining the pooja room, and not even above or below the prayer room. Never place any photographs to dead people in the pooja room.
Avoid keeping the heavy figures/idols of Lord Ganesha in the pooja room, however light weight figures and pictures can be placed instead. The roof of the prayer room should be lower in comparison to the other rooms on the same floor. One can use false ceiling for the same, if major renovation not possible. White or light yellow marble work in the room is auspicious. The color of the walls can be white, light yellow or light blue. The lamp-stand or up lighter can be in the south-east corner of the prayer room. The doors of the prayer room should not close or open automatically. A spring or door-closer should not be fixed on this door. Idols should not be kept facing each other. Broken idols and torn pictures should not be kept in the prayer room. An aimirah or show-case can be placed in the southern or western wall, but it should be lower than idols. Keep the pooja room absolutely clean. If you are forced to have your prayer in the kitchen, have your deity in the North-east of the kitchen, facing west. Never have the prayer area in the bedroom. If it is a very big plot the prayer room can be constructed in the center of the plot or center of the building. No bell should be hung in the puja room. And if a mandir is built of wood steel etc. the top of the same should never be pointed/sharp. It is beneficial to build a threshold at the entrance of the puja room. Only white and soft blue color should be used to paint the walls in the puja room.