Prime area at Puchong is between Puchong Jaya and Bdr Puteri. These areas don't need lrt to boost up its appreciation
As for areas like Puchong Permai and Puchong Prima, it will surely helps as these are not prime areas of puchong

Having say that, houses at USJ may have negative impact as the route was squeezed between houses. No choice for them as there are no more large land at USJ as compared to Puchong.

As for people staying at Putra Heights (like me), it will be good for the business there as there are a lot of shoplots there which were not taken up yet. An interchange station there will surely helps

subsales at putraheights already hit half a mil already...