My neighbour has a large carport with guttering and a fall pipe, the fall pipe is not connected to a gully drain or soakaway, it just empties onto the ground at the point where my boundary wall meets my house. This is only a recent change to the carport and so it has not caused any problems just yet however I am very concerned. Previously it emptied into a water barrel which was "managed" by the owner. My neighbour passed away last year and the property was rented, over the winter the water spill from the barrel has caused my neighbours tarmac drive to lift up in parts, when we were digging out for an extension it also caused the trench to collapse. So now the fall pipe is now within 2 inches of my house which is a worse situation than the barrel. Anyone know if there are any regulations about this, I called my local building control office this morning and they said the building regs do not cover carports. Right now I'm trying to reason with my neighbour that the cost of a few feet of extra gutter to connect to an existing fall pipe is far cheaper than the cost of putting right any problems caused by the water being discharged next to my property.