Here are some things that you should watch out for when you are house-hunting. These days` people purchase a flat/ apartment for different reasons, like safety, economy, proximity to the office, business and city centre etc. Since independent houses or bunglows are so expensive in the centre of the city, people opt for purchasing flats. Some of the general Vaastu rules are:
A northwest room direction is appropriate for guests and girls. The head of the family should have his room in the southwest direction. Northeast bedroom should not be situated in this direction, as there is a possibility of increase in the number of girls in the family. South-East- bedroom should not be located in this direction, as the children do not tend to take interest in studies. The direction does not provide sound sleep. When purchasing a land, plot or site, Vastu indicates that the sites should face the southwestern, southern and western directions. It is advisable to purchase the one rectangular or square in shape. As far as possible, the site should slope towards north and east or northeast directions.

Stairs should always comprise the clock-wise direction.
Everything over ground should be in the Southern or Western direction.
The porch should not adjoin the North or East compound wall.
Huge trees should not be grown in North or East, but in Southern or Western side of the house.
Good cross ventilation proves beneficial.
A poster of a sobbing girl, war scene, an angry man, owl, eagle etc., should be avoided, as they act as inauspicious elements.
No room should be constructed below the staircase.
The northern section of the house should be larger, as compared to those in the southern section by 6-9 inches and lower by 1-3 inches. Ideally, the height of the rooms should be, 12- 14 feet. As far as doors and windows are concerned, the main door should be larger as compared to the inner ones and that they should open towards the walls. The windows should be at least 3 feet above the ground level and range from the same level from the top. They should open from the northern and eastern sides of the building.
The day-to-day wastes from the kitchen should be covered and placed in the southwest corner of the kitchen.
The doors must be located in the north and east. As one enters a room, his/ her mind is influenced by the doors, as they (doors) emit magnetic waves when placed in the appropriate directions.
Entrances to the house placed in the northern, eastern and northeastern directions, are considered auspicious. There should be no water body opposite any entrance door of the house. Doors of each room should face the East.
The pooja room should be in the North Eastern direction. All idols and photographs should be facing East or West.
Out houses should not come in contact with the compound wall of the Northern and Eastern side.