The selection of a plot is very important since the plot represents a fixed form, that will radiate positive as well as negative energies depending on its location, orientation, shape, slope and soil quality.
While selecting a plot these five major points are to be kept in mind.
Normally a Vaastu Expert is not involved at the time of buying a plot.
But as a Vaastu Expert, I would suggest that it is good to involve one, at the time of selecting a plot, as his inputs could be very valuable in deciding the right Site.
Generally, the points an Vaastu Expert will keep in mind while selecting a site, will by default be in accordance with Vaastu Shastra.
If you already own a plot for construction of house or office, you should still refer to the Vaastu Guidelines prescribed for the selection of suitable plot.
In the Selection of a plot, the following Vaastu Guidelines should be looked into, since most of these guidelines are based on scientific reasoning and few on common sense.