According to Vastu Shashtra special feature of ideal plot or hose are given below :
1) Plot or hose should be rectangular and square shaped.
2) Rectangular is most suitable, if it is longer ( North - South ) than East - West.
3) The plot surface is higher in South and West direction.
4) Towards North and East direction should be open.
5) If these are roods in North and East direction these are most suitable for house/plot.
6) If these are hill in Western and Southern side plot/house that is good according to Vastu.
7) A always avoid a Circular, Semi circular, Oval and Triangular shaped plot.