Historically all the big projects take at least 10s of years.
See BT Phase-8, as Suhail Sahab said, Air force Tarnol, AWT Sangjani, DHA-1 & 2, all CDA sectors have already celebrated their 15th year birthday.
BT a little better may be in this regard!
Valley will take a lot of time due to its terrain and the fact that it is as big as Islamabad.
There were only Lilly and oleander, which were hot in the 1st place and still there is no math of them in the entire valley as they are safe from the dam. Other Dam-safe sectors are having huge villages inside.
The point here is, was and probably will be (I do not hope so though), the famous “Dhadhoocha Dam”.
Mali Riaz now talked of it on the TV and Ch. Nisar seems got soft, there is a lot of hope that dam place will be re-addressed. The Rose & Bluebell are in the heart of Dam as per the original plan.
If dam issue is done, as MR said, then sky is the limit for the valley as after Islamabad highway is done, it will further shine. BT/HRL/DHA will rack their piles of money of commercial places and development will get faster.
But Ch. Nisar??? A million dollar question?