Any construction in the extended plot should always be parallel to the road. The construction should never be oblique. The Southern and Western compound walls of the plot should be thick, heavy and high. Tall growing trees should be planted along these walls. On the other hand the Northern and Easter compound walls of the Plot should be thin, light and of low height. Along these walls tall trees should never be planted. Nothing should be constructed in any corner of the extended plot with the support of the compound walls.
The benefits from a river, reservoir, hills, roads and vithishulas surrounding the extended plot are neither more nor less. Still such extended plots can yield auspicious results only after proper Vastu constructions. So to improve the energy level and the magnetic field of a building or plot structures can always be rectified for establishing peace and prosperity.