Hey All, I have another thread in development about an issue I am currently working through regarding stormwater. Without going into it too much, I am subdividing and selling an existing property and then building out the back. As part of my DA I need to build a pump pit during development. The issue I have is that the front dwelling has no storm water and When the pit is constructed I need them to have their water redirected into this pit as well (just pouring out onto my footings! No thanks!). So my question is how can I legally bind whoever buys the front dwelling to: A - Be required once constructed to have their storm water re-directed into this pit (the cost of this I am not too fussed about because it will be relatively cheap) B - Have them be half responsible for the maintenance, repairs.etc of the pump pit. I originally though a section173 but am being advised this is not the case. I was thinking perhaps a caveat or something on the contract of sale?