Thanks SaveH2O. I really appreciate your effort and time providing details.
This is being discussed with the Builder now. I will use this info while talking to them. I will update…

Thanks SaveH2O.

1) Roof Area : Not quite sure but the floor area is around 225 m2 with a roof 23 deg. Which roughly calculates to 250 m2. Considering we have…

Just wondering instead of connecting the watertank overflow pipe to the stormwater pipe, just connect that to the Pit (probably increase the size of the pit). Or use a 2nd…

Thanks
I have attached the stormwater drainage plan here. I noticed some deviations and have marked it.
1) The pit and the overflow are connected to the same Pit-to-Kerbside pipe. The…

An update on this - I got a good plumber, with camera and have been doing drainage work, to look at this issue. He said this is due to the…

Thanks @ . This is a new area but have houses around. (most of them are 4 bed, double storey house)
I found a grill-opening (?) near by curb. Not sure…

Hi
We recently bought a house which is around 2 years old (NSW, Liverpool Area). We are in a difficult situation with drainage. Not familiar with this topic (first time buying…