Need A Guidance

Please guide on buying 10 Marla residential plots in DHA Phase 2, Block M for building house. I found a rumor that 10 Marla plots require a wall to make before building a wall. I am a layman in this field, hence require recommendation from experts.

No 10 marla in m bloc according to my info…10 marla are in L,N,P blocks…If you are interested in buying,you can contact me at 03455370978.