Hi raja
There are two ways of labour charges in plumbing
1. Lumpsum ( can be calculated based on no days needs to complete the
job & no of workers involved)
2. Item wise.
In this each item is quoted seperatly.
Like fixing
1/2"pipe - rft - 10/-
1"pipe - rft - 11.00/-
2”pipe - rft -15.00/- so on……
For fixing wall mixtuere - -160/- like wise you have different rates
for each and every item.
Roughly for a 2bed room house the labour cost will somewhere between
40,000- 50,000/- .This includes external drains lines, pits,
inspection chambers etc…
Again the price varies with quality of workmanship.
Regards
Ar.Praveen.N
Ardes Architects and Interior Designers
ardesar...@yahoo.co.in