Replacing Governor House wall with jangla

Im a builder & Im pained to share the cost of dismantling & erection of a wrought iron wall around Governor House Lahore.
1.  1 kanal 60×90 plot has 300 running feet.
2.  Governor House sprawls over 700 kanal.
3.  Total running feet 300 × 700 = 210,000 rft
4.  Dismantling Rs 10 per rft of 10 feet tall wall= Rs 21,000,000 (21 Mn) (including rubble disposal )
5.  Erection of cheapest wrought iron Jangla of 7 feet height with 6 inch span is Rs 1000 per rft
6.  Total cost of Jangla around Governor House 210,000 × 1000= 210,000,000  (Rs 210 Mn)
7.  Total cost of dismantling + Jangla = 21 + 210=  241 Mn
8.  15% cost of builder 241 + 36.15 = Rs 277.15 Mn

Why do we need to spend Rs 277.15 Mn to replace existing brick wall with Jangla around Governor House with increased security requirements?
On one hand, the economy is showing no signs of improvement & on the other hand such pointless/ nonsense spending just to fulfil a ridiculous election slogan.
With all his car selling, buffalo selling & down-sizing at PM House, PM boasted of saving Rs 150 Mn in past 3 months & he is spending double that amount on something as grotesque as a Jangla with zero added value.
Would some durbari puff some sense into PM's head to stop this crazy adventure.
Only Allah Knows the whole Truth