I would agree with anonpak on a few things. I have been looking to buy property and have done surveys in many areas.
E-11 prices at this point in time do not represent the true market value of the property. They are extremely inflated keeping in mind the dynamics.
1) E-11 is NOT a CDA sector. The land has been transferred by CDA to housing societies such as NPF, MPF and they will maintain the services there and allocate plots.
2) In terms of plot sizes and environment, it would compare to G sectors.
Now compare the cost of a renovated / brand new 30*70 house:
G-11/G-10/G-9 : 1.3 to 1.5 crores
F-11/3 (only 2 streets have 10 marlas plots): 1.5 - 1.6 crores
E-11: Buyers are asking anywhere from 1.5 to 1.8 crores
What does this mean? simple, the prices are artificially inflated and linked with the "E" aspirational value (people see E-11 and think E-7,8,9 which is not the case) plus the GHQ rumor. Its pure common sense, how can a similar plot size / house in E-11 which is NOT a CDA sector be worth more than F-11? (which is a developed "F" sector and a CDA sector).
There is a plus point which is proximity to the developed sectors such as F-10/11. Over a period of time, I agree that price in E-11 will go up, making this feasible from short term investment point of view but not in the same proportion as lets say F-11 or G-10.